CN100357599C - Systems and methods for control of pumps - Google Patents

Abstract

Systems and the related methods for the pumping of fluids through a pump. The pump comprises a pump chamber (PPN), which is responsive to applied pressures to convey fluid. The systems and methods employ control measures, implemented through the controller (16), to monitor fluid flow through the pump, using either gravimetric (246) or electrical field sensing.

Description

The system of pumping fluid

Technical field

The present invention relates to a kind of processing and acquisition system that is used for the suspension of blood, blood constitutent or other cellular material.More specifically, the present invention relates to a kind of system of pumping fluid.

Background technique

People become its various medical components, for example red blood cell, blood platelet and blood plasma by centrifuge method with separation of whole blood as usual usually at present.

Traditional blood processing adopts durable centrifugation apparatus in conjunction with the special-purpose aseptic process system that is made of plastics usually.Operator were placed on this disposable system on the centrifugal separator before handling, with after they are thrown away.

The size of tradition centrifugal blood seperator makes and is not easy to carry between the blood collection position.In addition, pack into and unloading operation relatively expends time in and dull sometimes.

In addition, need to improve so further to be used for gathering the system and method for blood constitutent: it helps to be applied in the situation of big capacity, online blood collection, can realize blood cell component such as blood plasma, red blood cell and hematoblastic more high production to critical needs in this case in the quite short time.

As for littler and lighter institute of system strong request, the operation of this fluid handling system and performance requirement are become complicated and perfect more.Therefore need automatic blood processing controller, these controllers can gather and produce more detailed information and control these signals to make processing and separation effect maximization to help operator.

Summary of the invention

The invention provides the processing system that is used for blood and blood constitutent, this system helps to form the processing platform with light and flexible of simply and accurately controlling function.

Particularly, the invention provides the flow through multiple systems of pump of pumping fluid.This pump comprises a pump chamber, response institute applied pressure, conveyance fluid.Described system is provided with electrode in described pump chamber, in the use, electrode is connected with a power supply.Electrode produces electric field in pump chamber, electric field changes and changes along with the Fluid Volume in the pump chamber.Along with being transferred, fluid flows through described pump chamber, the variation of described system log (SYSLOG) electric field.

In one embodiment, described system produces an output according to electric field over time.According to described output, described system for example, derives a value that shows the Fluid Volume that described pump chamber is carried, and perhaps derives a value that shows the fluid-flow rate that described pump chamber is carried.

In one embodiment, according to described output, described system detects the abnormal work state, produces an alarm.The abnormal work state for example, can show that there is air in described pump chamber, perhaps shows described pump chamber flow blockage.

In one embodiment, output is demarcated according to the stroke volume of pump chamber by described system.

In one embodiment, described system is at least in part according to described output, and change is applied to the pressure on the flexible membrane on the pump chamber.

In one embodiment, the caused capacitance variations of described system log (SYSLOG) electric field change.

In one embodiment, the stroke volume of pump chamber is constant substantially.Described system makes pump chamber link to each other with an actuator, during intervals of strokes, moves with flexible membrane, and conveyance fluid flows through pump.Along with FLUID TRANSPORTATION process pump chamber, the variation of writing down described electric field; The electric field change of time period derives actual flow speed per sample, regulates intervals of strokes, so that reach desired flowing velocity, thereby indicates a desired flowing velocity.In one embodiment, intervals of strokes comprises: the time lag component that the suction fluid enters described pump chamber, and from the time lag component of described pump chamber discharge fluid, standby time is component at interval; System regulates one or more so that reach desired flowing velocity in the described time lag component.

In one embodiment, described system is connected between blood source and the blood separating mechanism, as a part of blood processing system pump chamber is online.

Another aspect of the present invention provides a kind of blood processing system that links to each other with blood separating mechanism.This system comprises a box, and this box comprises at least one pneumatic pumping plant, and described pumping plant comprises a pump chamber with known substantially invariable stroke volume.This system also comprises the pneumatic actuator of supporting described box, optionally applies aerodynamic force to pumping plant during intervals of strokes, and pumping fluid passes described pump chamber.This system is provided with an electrode in pump chamber.Electrode is connected with power supply, produces electric field in pump chamber, and described electric field changes along with the variation of Fluid Volume in the described pump chamber.This system comprises the testing circuit that is connected with described electrode, along with FLUID TRANSPORTATION flows through described pump chamber, and the variation of record electric field.

Another aspect of the present invention provides several pumping fluids through a system with pump of known stroke volume.Described system adopts the Weight control method to monitor that fluid flows through pump.Described system comprises an actuator, at intervals of strokes (T _Stroke) during, moving with pump, conveyance fluid flows through pump.Described system links to each other a container with pump, come the fluid of self-pumping to pump or acceptance with the spray feed fluid.

According to a form of implementation of this respect of the present invention, described system detects the variation at a sample time period container weight.An actual flow speed (Q is derived in the variation of described system test sample time period upper container weight _Real), the stickiness of consideration fluid, and according to actual flow speed (Q _Real) regulate intervals of strokes, so that obtain desired flowing velocity (Q _Requirement), thereby reach desired flowing velocity (Q _Requirement).In one embodiment, when described pneumatic actuator, intervals of strokes (T _Stroke) comprise the time lag component (T that fluid is pumped into described pump ₁), fluid is discharged the time lag component (T of described pump ₂), and standby time component (T at interval ₃).In this embodiment, controller is regulated described time lag component (T according to following relation ₁, T ₂, T ₃) in one or more, to obtain desired flowing velocity (Q _Requirement):

Wherein:

T _{N (adjusting)}For regulating to obtain desired flow velocity Q _RequirementThe size of time lag component afterwards;

T _{N (not regulating)}Be the T that does not regulate _StrokeThe size of component at interval At All Other Times; Regulating to obtain desired flow rate Q _RequirementThe intervals of strokes through regulating afterwards is T _{N (adjusting)}And T _{N (not regulating)}Summation;

K considers interactive correction factor between pump and the upstream and downstream pressure, is expressed as follows:

According to another embodiment of the present invention, described system detects the variation at a sample time period container weight, and detect the abnormal work state that influences described pumping plant according to pump correction factor K, wherein K considers that interaction effect derives a pump correction factor between pump and the upstream and downstream pressure.Described system produces an alarm output according to K.The pump correction factor is derived by following formula:

The threshold value that produces alarm output can change.For example, amplitude and the deviation between the expected value according to described K produces an alarm output.Perhaps, combination with it is according to polarity and alarm output of the deviation generation between the expectation polarity of described K.In one embodiment, the variation of described system also detects described actuator when not working container weight produces an alarm output.

In the embodiment who comprises the one or more forms of implementation of the present invention, pump comprises the pump chamber with substantially constant stroke volume.

In the embodiment who comprises the one or more forms of implementation of the present invention, pump links to each other with a blood separating mechanism, as the part of blood processing system.

In the embodiment who comprises the one or more forms of implementation of the present invention, described system comprises a box, and this box comprises at least one pneumatic pumping plant, and described pumping plant comprises a pump chamber with known substantially invariable stroke volume.Described system also comprises the pneumatic actuator of supporting described box, optionally applies aerodynamic force to described pumping plant during intervals of strokes, and pumping fluid passes described pump chamber.

In specification below and the accompanying drawing other features and advantages of the present invention have been described.

Description of drawings

Fig. 1 demonstrates the disposable processing set that was not connected with processing equipment for specifically having shown the perspective view of a system of feature of the present invention before using;

Fig. 2 is the perspective view in the system shown in Fig. 1, and the door that demonstrates the position of centrifugal separator and pump and valve station is opened, so that use during for the installation of treatment device;

Fig. 3 is the perspective view in the system shown in Fig. 1, demonstrates treatment device and is installed on the processing equipment fully and is ready to and use;

Fig. 4 is the right elevational perspective view of the chest of the treatment device shown in dress Fig. 1, and its cover closing is so that transport this equipment;

Fig. 5 is the schematic representation in blood processing loop, and this loop can be programmed to carry out the multiple different blood processing programs relevant with the equipment shown in Fig. 1;

Fig. 6 is the perspective exploded view of box, and this box is included in the programmable blood processing loop shown in Fig. 5, and pump on the processing equipment shown in Fig. 1 and valve station, and described equipment holds this box so that use;

Fig. 7 is the planimetric map in the front of the box shown in Fig. 6;

Fig. 8 is the perspective view of the amplification of the valve position on the box shown in Fig. 6;

Fig. 9 is the planimetric map at the back side of the box shown in Fig. 6;

Figure 10 is the planimetric map that is included in the common treatment device in the box shown in Figure 6, and this device can be installed on the equipment shown in Figure 1, as shown in Fig. 2 and 3;

Figure 11 is the top cross-sectional view at pump and valve station, is wherein adorning the box shown in Fig. 6 so that use;

Figure 12 is the schematic representation of Pneumatic pipe assembly, and it is the part at pump shown in Fig. 6 and valve station, and it supply with positive and negative air pressure with FLUID TRANSPORTATION by the box shown in Fig. 7 and 9;

Figure 13 is a perspective elevation of adorning the chest of this processing equipment, and its lid is opened so that this equipment uses, and demonstrates the position of the various processing elements that are contained in this cabinet interior;

Figure 14 is the schematic representation of controller, and this controller carries out the function of the equipment shown in program control and the surveillance map 1;

Figure 15 A, 15B and 15C are the side schematic view that is combined in the blood separating chamber in the equipment shown in Figure 1, demonstrate blood plasma and gather pipeline and two relevant on-line sensors with red blood cell, these two sensors are surveyed situation (Figure 15 A), the situation (Figure 15 B) of overflowing of normal running and the situation (Figure 15 C) of not overflowing.

Figure 16 is the perspective view of anchor clamps, and these anchor clamps are aimed at the observation of described on-line sensor gathering to make these when pipeline links to each other pipes maintenance is desired with blood plasma and red blood cell, shown in Figure 15 A, 15B and 15C;

Figure 17 is the perspective view at the anchor clamps shown in Figure 16, and plasma cell collection pipeline, red blood cell collection pipeline and whole blood inlet duct are installed, thereby with a kind of organized array side by side these pipes is concentrated in together;

Figure 18 is for being configured to the perspective view when two sensors are aimed in observation shown in Figure 15 A, 15B and 15C at the anchor clamps shown in Figure 17 and pipe;

Figure 19 is the schematic representation of sensing station, forms the part of this sensing station at first and second sensors shown in Figure 15 A, 15B and the 15C;

Optical density in time the plotted curve of Figure 20 for being sensed by first and second sensors;

Figure 21 is the exploded top perspective view of molded centrifugal blood container handling, and this container can be used in combination with the equipment shown in Fig. 1;

Figure 22 is the bottom perspective view at the molded container handling shown in Figure 21;

Figure 23 is the top view at the molded container handling shown in Figure 21;

Figure 24 is the side sectional view at the molded container handling shown in Figure 21;

The top view of the connector that Figure 24 A cuts open for the 24A-24A line in Figure 24 substantially, this connector is connected umbilical region on this molded container handling in the mode shown in Figure 24;

Figure 25 is at the side sectional view of the molded container handling shown in Figure 24 after being connected umbilical region on the container;

Figure 26 is the perspective view of the centrifugal separator station of the processing equipment shown in Fig. 1, and container handling is installed so that use;

Figure 27 is another perspective exploded view at centrifugal separator station shown in Figure 26 and container handling;

Figure 28 is the side sectional view at the centrifugal separator station of the processing equipment shown in Figure 26, and container handling is installed so that use;

Figure 29 is as the top view at the molded centrifugal blood container handling as shown in Figure 21 to 23, demonstrates to be used for becoming blood plasma and erythrocytic a kind of stream to arrange separation of whole blood;

Figure 30 to 33 is as the top view at the molded centrifugal blood container handling as shown in Figure 21 to 23, demonstrates to be used for becoming blood plasma and erythrocytic another kind of stream to arrange separation of whole blood;

Figure 34 is the schematic representation in another kind of blood processing loop, and this loop can be programmed with the equipment shown in Fig. 1 that is combined in carries out multiple different blood processing program;

Figure 35 is the planimetric map in box front, and this box contains in the programmable blood processing loop shown in Figure 34;

Figure 36 is the planimetric map at the box back side shown in Figure 35;

Figure 37 A is at the schematic representation in the blood processing loop shown in Figure 34 to 37E, demonstrates the programming of box, to carry out the different fluid mobile operational process relevant with whole blood being processed into blood plasma and red blood cell;

Figure 38 A and 38B are the schematic representation in the loop of blood processing shown in Figure 34, demonstrate the programming of box, to carry out and to be delivered into flow of fluid operation relevant from the red blood cell that separation of whole blood goes out additional solution is online;

Figure 39 A and 39B are at the schematic representation in the blood processing loop shown in Figure 34, demonstrate the programming of box, with carry out with from whole blood the online conveying of isolated red blood cell by a filter to remove the relevant flow of fluid operation of white blood cell;

Figure 40 is the representative embodiment that is suitable for a kind of platform scale that is used in combination at the equipment shown in Fig. 1;

Figure 41 is the representative embodiment that is suitable for the another kind of scale that is used in combination at the equipment shown in Fig. 1;

Figure 42 is used for the flow velocity sensing of air pump chamber and the schematic representation of control system, and this system has adopted an electrode to form an electric field in pump chamber inside; And

Figure 43 is the schematic representation of Pneumatic pipe assembly, and this assembly is the part at pump shown in Fig. 6 and valve station, and this assembly carry positive and negative air-pressure with FLUID TRANSPORTATION by the box shown in Figure 35 and 36.

Under the situation that does not break away from its spirit or substantive features, can come specific implementation the present invention with several forms.Scope of the present invention is limited in the additional claim, rather than in the specification before them.Therefore all fall within the implication of equivalent technical solutions of claim and the embodiment in the scope will be comprised by claim.

Embodiment

Fig. 1 the has demonstrated imbody fluid handling system 10 of feature of the present invention.This system 10 can be used for handling various fluids.System 10 is particularly useful for handling the suspension of whole blood and other biological cellular material.Therefore, described embodiment has shown the system 10 that is used for this purpose.

I. system survey

System 10 comprises three basic elements of character.They are (i) liquid and blood flow assembly 12; (ii) blood processing apparatus 14, and this equipment and flow module 12 interacts to facilitate separating and gathering of one or more blood constitutents; And (iii) controller 16, this controller is controlled this interaction to carry out selected blood processing and capture program by operator.

Blood processing apparatus 14 and controller 16 should be the durable goods that can use for a long time.In described preferred embodiment, this blood processing apparatus 14 and controller 16 are installed in the inside of a suitcase or box 36.Chest 36 has the touch-down zone of a compactness, is applicable to install on desktop or other relatively little surface and operation.This chest 36 also should be able to be easily transported to gathers the place.

This chest 36 comprises a base portion 38 and a hinged cover 40, and this lid can be opened (as shown in Figure 1) and close (as shown in Figure 4).Lid 40 comprises a breech lock 42, is used for releasably the lid 40 of closing being locked.This lid 40 also comprises a handle 44, and operator can catch this handle so that carry this chest 36 when lid 40 is closed.In use, base portion 38 should be in one substantially in the supporting surface of level.

Chest 36 for example can be made into desired structure by molded.Chest 36 preferably make by a kind of lightweight by durable plastic materials.

Flow module 12 should be a kind of disposable of special use of process sterilization.As shown in Figure 2, before beginning to carry out given blood processing and capture program, operator put into the various parts of flow module 12 in the chest 36 relevant with equipment 14.Controller 16 is carried out this program according to other input of the rules of being scheduled to from operator.In case finish this program, operator make flow module 12 separation instrumentations 14.Make device 12 keep the part of the blood constitutent of being gathered to break away from chest 36 and keep so that deposit, transfuse blood or further handle.Make the remaining part of device 12 break away from chest 36 and it is thrown away.

Flow module 12 as shown in fig. 1 comprises that a design is used for the blood processing chamber 18 that is used in combination with centrifugal separator.Therefore, as shown in Figure 2, processing equipment 14 comprises a centrifugal separator station 20, and this centrifugal separator station holds this process chamber 18 so that use.Shown in Fig. 2 and 3, centrifugal separator station 20 comprises a compartment that is formed in the base portion 38.This centrifugal separator station 20 comprises door 22, and this door is used for opening or closing compartment.Door 22 is opened so that process chamber 18 can be put into.Door 22 is closed to seal this process chamber 18 during operation.

Centrifugal separator station 20 rotates process chamber 18.When rotating, this process chamber 18 will be separated into various components for example red blood cell, blood plasma and contain blood platelet and leukocytic buffy coat eccentrically from the whole blood that blood donors receives.

It should be understood that system 10 needn't make centrifugal blood ground separate.System 10 can be equipped with the blood separation equipment of other type, for example film blood separation equipment.

II. programmable blood processing loop

Device 12 defines a programmable blood processing loop 46.Various structures all are possible.Fig. 5 generally demonstrates a kind of representational structure.Figure 34 generally demonstrates another kind of representational structure, and this will be described below.

With reference to Fig. 5, loop 46 can be programmed to carry out multiple different blood processing program, wherein for example can gather red blood cell, perhaps gathers blood plasma, perhaps gathers blood plasma and red blood cell, perhaps gathers buffy coat.

Loop 46 comprises a plurality of pumping plant PP (N), and these pumping plants adopt the form of a kind of fluid flowing passage F (N) to interconnect by one group of line valve V (N).This loop links to each other with the remaining part of blood processor by port P (N).

Loop 46 comprises a kind of programmable networks of flow channel, and this network comprises that 11 universal port P1 are to P8 and P11 to P13 and three general pumping plant PP1, PP2 and PP3.By the selectivity operation of line valve V1, any universal port P1 can be arranged to communicate with any general pumping plant PP1, PP2 and PP3 to P13 to P8 and P11 to V14, V16 to V18 and V21 to 23.Selectivity operation by these valves for general use, can guided liquid-flow along between two valves forwards to or opposite direction by general pumping plant arbitrarily, or along the turnover direction by single valve.

In described embodiment, this loop also comprises an independent flow channel that comprises two port P9 and a P10 and a pumping plant PP4.This flow channel is called as " independent ", this be because under not having the situation of external pipe it can not be configured to loop 46 in any other flow channel directly communicate.Selectivity operation by line valve V15, V19 and V20, just can guided liquid-flow along between two valves forwards to or opposite direction, perhaps pass through pumping plant along the turnover direction of single valve.

Loop 46 can be programmed specify special-purpose pump function for various pumping plants.For example, in a preferred embodiment, general pumping plant PP3 can be used as a kind of general blood donors interface pump, and no matter the concrete blood processing program of being carried out, so that extract blood out or blood turned back to blood donors from blood donors by port P8.In this set, pumping plant PP4 can be as a kind of anticoagulant pump of special use, so that extract anticoagulant and make anticoagulant through entering in the blood after the metering by port P9 from the source by port P10.

In this was provided with, general pumping plant PP1 can consider the concrete blood processing program of being carried out and as a kind of processing whole blood pump of special use, so that whole blood is delivered in the blood separator.This special-purpose function makes blood donors interface pump PP3 no longer have the additional function that whole blood is transported to separator.Therefore, the whole blood pump PP1 in this processor can keep blood is fed to blood separator continuously, and blood donors interface pump PP3 can be used for drawing blood and blood being turned back to blood donors by single fleams simultaneously.Thereby make the processing time minimum.

In this was provided with, general pumping plant PP2 can be used as a kind of blood plasma pump regardless of the concrete blood processing program of being carried out, so that carry blood plasma from blood separator.The continuous blood flow that this ability that can be exclusively used in independent pump function has formed a turnover separator and passed in and out blood donors.

This loop 46 can be programmed according to the object of concrete blood processing program, is used for keeping all or some blood plasma so that deposit or classification, perhaps is used for all or some blood plasma is turned back to blood donors.This loop 46 can also be programmed according to concrete blood processing program, is used for keeping all or some red blood cells so that deposit or classification, perhaps is used for all or some red blood cells are turned back to blood donors.This loop 46 can also be programmed according to concrete blood processing program, is used for keeping all or some buffy coats so that deposit or classification, perhaps is used for all or some buffy coats are turned back to blood donors.

In a preferred embodiment, programmable fluid circuit 46 can be realized by adopting a fluid pressure actuated box 28 (referring to Fig. 6).This box 28 provides a concentrated programmable integrated platform for desired all pumpings of given blood processing program and valve function.In described embodiment, hydrodynamic pressure comprises positive air pressure and negative air pressure.Can also adopt the hydrodynamic pressure of other type.

As shown in Figure 6, box 28 and pneumatically actuated pump and valve station 30 interact, and this pneumatically actuated pump and valve station are installed in the lid 40 of chest 36 (referring to Fig. 1).Box 28 in use is installed in pump and the valve station.This pump and valve station 30 apply positive air pressure and negative air pressure so that guided liquid-flow passes this loop on box 28.To provide further details below.

Box 28 can adopt various forms.The same (referring to Fig. 6) as described, box 28 comprise an injection molding body 188 with front 190 and back side 192.In order to illustrate, positive 190 is box 28 is avoided operator when it is installed in pump and the valve station 30 sides. Flexible membrane 194 and 196 covers respectively on the front 190 and the back side 192 of box.

Box body 188 is preferably made by a kind of rigid medical grade plastic material.Diaphragm 194 and 196 is preferably made by the flexible plate of medical plastic.Diaphragm 194 and 196 is sealed to the periphery of the obverse and reverse of box body 188 around their edge.Diaphragm 194 and 196 inner region also can be sealed to the inner region of box body 188.

Box body 188 all has one group of internal cavities (referring to Fig. 7 and 9) on the front 190 and the back side 192.Valve station and flow channel shown in these inner spaces define in Fig. 5 roughly.Be provided with an extra cavity so that form a station that holds a kind of filtering material 200 at the back side of box 28.In described embodiment, filtering material 200 comprises a kind of netted filtering structure of overmolded.This filtering material 200 is used for removing grumeleuse and the cellular aggregation that forms during use during blood processing.

Pumping plant PP1 is formed in the well of opening on the front 190 of box body 188 to PP4.The edge of erectting surrounds the open well of pumping plant at periphery.Except the through hole or port 202 or 204 at a pair of interval that is used for each pumping plant, these pump sumps are enclosed on the back side of box body 188. Port 202 and 204 extensions are led on the back side 192 of box body 188.Be not difficult to find out that port 202 or 204 can make its relevant pumping plant as an inlet or outlet, perhaps use for export simultaneously and inlet.

It is the well of opening that line valve V1 forms on the front 190 of box equally to V23.Fig. 8 demonstrates representative valve V (N).The edge of erectting surrounds the open well of the valve on the front 190 of box body 188 at periphery.Except each valve all comprised a pair of through hole or port 206 and 208, these valves sealed on the back side 192 of box 28.A port 206 communicates with a selected fluid passage on the back side 192 of box body 188.Another port 208 communicates with another selected passage on the back side 192 of box body 188.

In each valve, a valve seat 210 extends around port 208.Valve seat 210 is recessed in the surface underneath of recessed valve pit, and port 208 just flushes with recessed valve pit circumferential surface basically like this, and valve seat 210 extends below the valve pit surface.

The flexible membrane 194 that is covered with box 28 fronts 190 leans against on the setting edge that surrounds these pumping plants and valve.By on this side of box body 188, applying malleation equably,, erects on the edge flexible membrane 194 thereby being pressed against these.Positive pressure forms the periphery sealing around these pumping plants and valve.This makes these pumps and valve be spaced from each other again and separates with the remaining part of this system.Pump and valve station 30 can apply malleation for this reason on the front 190 of box body 188.

In addition, positive fluid pressure that applies partly on the diaphragm 194 that is covered with these zones that sealed by the edge and negative hydrodynamic pressure are used for making the deflection in the zone of these periphery sealings of this diaphragm.These are used for liquid is discharged pumping plant (by applying malleation) and liquid is drawn into pumping plant (by applying negative pressure) being covered with the positive fluid pressure that applies partly on the diaphragm zone of pumping plant and negative hydrodynamic pressure.

In described embodiment, each pumping plant PP1 comprises a recessed track 316 (referring to Fig. 7) to the bottom of PP4.This track 316 extends between port 202 and 204, and comprises a folding road that extends with an angle from top port 202 beginnings.This track 316 forms better flow of fluid continuity between port 202 and 204, especially when the diaphragm zone is subjected to acting on positive pressure on the pumping plant bottom.This track 316 has also prevented the air in the diaphragm zone collection pumping plant.Air in pumping plant inside is pressed in the track 316, even this diaphragm zone is dropped to minimum point in this station, here it also can be discharged from pumping plant by top port 202 at any time.

Equally, be covered with on the diaphragm zone of valve local positive fluid pressure that applies and negative hydrodynamic pressure will be used for making these diaphragms zone seats by (by applying malleation) and not seat lean on (by applying negative pressure) on these valve seats, thereby close and open relevant valve port.This flexible membrane bends to valve seat 210 outsides corresponding to the negative pressure that is applied, to open corresponding ports.This flexible membrane enters valve seat 210 the insides corresponding to the malleation bending that is applied, to close corresponding ports.Sealing is to realize that with sealing around port 208 this port flushes with the wall of valve pit by forcing this flexible membrane bending to advance in the recessed valve seat 210.Flexible membrane forms the sealing of a kind of edge around valve port 208 in recessed valve seat 210.

In operation, on these zones that pump and valve station 30 are applied to front diaphragm 104 with the positive fluid pressure and the negative hydrodynamic pressure of part, so that open and close these valve ports.

Except fluid passage F15, F23 and F24 were formed in the slender pipeline of front 190 upper sheds of box body 188, fluid passage F1 was formed in the slender pipeline of the back side 192 upper sheds of box body 188 to F38.These fluid passages assign to represent to be beneficial to their observation with shadow part in Fig. 9.Erect the edge and surround the front 190 of box body 188 and the opening pipeline on the back side 192 at periphery.

Except passing at these passages the place of valve station port or pumping plant port, fluid passage F1 seals on the front 190 of box body 188 to F38.Equally, the place of the coaxial port that certain pipeline except pass the back side 192 with box 28 at these passages on communicates, fluid passage F1 seals on the back side 192 of box body 188 to F38.

Be covered with the front 190 of box body 188 and the flexible membrane 194 and 196 at the back side 192 and lean against encirclement fluid passage F1 to the setting edge of F38.By apply malleation equably on the front 190 of box body 188 and the back side 192, flexible membrane 194 and 196 just rests against to be erect on the edge.This just forms the edge sealing along fluid passage F1 to F38.In operation, pump and valve station 30 are applied to malleation on diaphragm 194 and 196 for this reason.

Two lateral margins of 188 extend pre-molded port P1 to P13 along box body.This box 28 is vertically installed so that be used among pump and valve station 30 (referring to Fig. 2).In this orientation, facing to the below, and port P1 is one to P7 and follows that another vertically stacks and facing to the inside port P8 to P13.

As shown in Figure 2, as will be below described the same, thereby port P8 to P13 by being orientated facing to below and the container support pallet 212 that is formed in the base portion 38.As will be below described in more detail the same, be orientated to P7 and centrifugal separator station and a container weight station 214 facing to the port P1 of the inside.Prevented that to the orientation of P7 (these ports are used for process chamber 18) air from entering process chamber 18 at the port P5 of port P1 below P4.

The orientation clocklike of these ports provides the device of the compactness concentrated consistent with the operating area of chest 36.

B. universal device

Figure 10 generally demonstrates universal device 264, and this device can carry out several different blood processing programs by the selectivity programming in the blood processing loop 46 that provided by box 28.

Universal device 264 comprises a feeder vessels 266, and this pipe (by Y-connection 272 and 273) is installed on the pipeline 300 with additional fleams 268.This feeder vessels 266 links to each other with the port P8 of box 28.

Also a container 275 that is used to gather the online blood sample of extracting out by pipe 300 is installed by Y-connection 273.

Anticoagulant pipe 270 links to each other with fleams 268 by Y-connection 272.Anticoagulant pipe 270 is connected on the box port P9.The container 276 that anticoagulant is housed links to each other with box port P10 by a pipe 274.Anticoagulant pipe 270 is with a kind of Pipeline clip 282 externally, manually operated ordinary construction.

The container 280 that the dress red blood cell adds solution links to each other with box port P3 by a pipe 278.Pipe 278 also is being with a manually operated Pipeline clip 282 in outside.

A container 288 of dress physiological saline links to each other with box port P12 by a pipe 284.

Figure 10 demonstrates the container 276,280 and 288 that fluid is housed, and they are installed in the course of working of device 264 integrally.Perhaps, all or some containers 276,280 and 288 can separate with device 264 provides.Container 276,280 can be connected by common pin connector with 288, perhaps install 264 and can be designed to provide the installation of independent container when in use, thereby keep a kind of blood processing environment of sealing of sterilization by a kind of suitable connection through sterilization.Perhaps, pipe 274,278 and 284 can have a kind of pipeline sterilizing filter and a kind of common pin connector so that inject container port when in use, thereby keeps the blood processing environment of the sealing of a sterilization.

This device 264 also comprises pipe 290,292 and 294, and these pipes extend on the umbilical region 296.When being installed in processing station, this umbilical region 296 makes the process chamber 18 of rotation link to each other with box 28 and does not need rotary seal.The further details of this structure will be provided below.

Pipe 290,292 and 294 is connected on box port P5, P6 and the P7.Pipe 290 is delivered into whole blood in the process chamber 18.Pipe 292 transports the blood plasma from process chamber 18.Pipe 294 transports the red blood cell from process chamber 18.

A blood plasma collection container 304 links to each other with box port P3 by a pipe 302.This collection container 304 is in use as the blood plasma storage in processor.

A red blood cell collection container 308 links to each other with box port P2 by a pipe 306.This collection container 308 in use is used to receive the first module red blood cell so that storage.

A whole blood storage 312 links to each other with box port P1 by a pipe 310.This collection container 312 is in use as the whole blood storage in processor.It can also be used to holding the red blood cell of Unit second so that storage.

As shown in Figure 10, there is not pipeline to link to each other with buffy coat port P4 with public box port P13.

C. pump and valve station

Pump and valve station 30 comprise a box fixed plate 216.Door 32 be hinged with respect to box fixed plate 216 at the open position that exposes box fixed plate 216 (shown in Fig. 6) with cover between the closed position of box fixed plate 216 (shown in Fig. 3) mobile.Door 32 also comprises an eccentric breech lock 218 that has latch handle 220.When door 32 is closed, breech lock 218 beginnings and latch pin 222 engagements.

As shown in figure 11, the internal surface of door 32 has a flexible packing ring 224.This packing ring 224 contacts the back side 192 of box 28 when door 32 is closed.An inflatable air bag 314 is positioned at below the packing ring 224.

Along with door 32 is opened (referring to Fig. 2), operator can put into box fixed plate 216 with box 28.Close to the doorstep 32 and plug breech lock 218 and make diaphragm 196 on packing ring 224 and box 28 back sides 192 facing to contacting.The air bag 314 that expands force packing ring 224 closely sealed engagement on diaphragm 196.Thereby this box 28 just is fixed in the box fixed plate 216 with a kind of being sealed and matched closely.

With the power that can not overcome by the manual force that normally is applied on the latch handle 220, the expansion of air bag 314 is also being supported eccentric breech lock 218 fully with respect to latch pin 222.Door 32 is pinned firmly and can not be opened when air bag 314 expands.In this structure, there is no need to adopt auxiliary locking device or sensor to guarantee during blood processing, allowing door 32 not open.

Pump and valve station 30 also comprise a pipeline assembly 226 that is arranged in box fixed plate 216.This pipeline assembly 226 comprises molded or mach plastics or a metal body.The front 194 of diaphragm is closed and air bag 214 keeps when expanding being pressed on the pipeline assembly 226 with engagement system closely at door 32.

This pipeline assembly 226 links to each other with pneumatic pressure source 234, and this pressure source provides positive air pressure and negative air pressure.This pneumatic pressure source 234 is contained in the inside of the lid 40 of pipeline assembly 226 back.

In described embodiment, pressure source 234 comprises two compressor C1 and C2.Yet, can also adopt one or more double end compressors.As shown in figure 12, a compressor C1 is provided to negative pressure on the box 28 by pipeline 226.Another compressor C2 is provided to malleation on the box 28 by pipeline 226.

As shown in figure 12, pipeline 226 contain four pump actuator PA1 to PA4 and 23 valve actuator VA1 to VA23.Pump actuator PA1 is manual orientation to PA4 and valve actuator VA1 to VA23, to form the mirror image of pumping plant PP1 to PP4 and valve station V1 to V23 on the front 190 of box 28.

Also have as shown in figure 22, each actuator PA1 comprises a port 228 to PA4 and VA1 to VA23.Port 228 is with the sequential delivery controlled by controller 16 positive air pressure or the negative air pressure from pressure source.These positive and negative air-pressure pulses make positive diaphragm 194 deflections with handle pump chamber PP1 in the box 28 to PP4 and valve station V1 to V23.Blood and treatment fluid are flowed pass box 28.

Box fixed plate 216 preferably includes the flexible thin film 232 (referring to Fig. 6) that pipeline assembly 226 is passed in a stretching, extension.This film 232 when being installed into fixed plate 216 as the interface between the diaphragm 194 of piston element 226 and box 28.Film 232 can comprise one or more small through hole (not shown) to PA4 and VA1 at covering pump and valve actuator PA1 in the zone of VA23.The size in these holes can be transported to pneumatic hydraulic on the box diaphragm 194 from pipeline assembly 226.Also have these holes to want enough little to hinder passing through of liquid.Film 232 forms a kind of flexible splash guard on the exposed surface of pipeline assembly 226.

This splash guard film 232 under the situation that box diaphragm 194 leaks, prevent liquid enter pump and valve actuator PA1 to PA4 and VA1 to VA23.This splash guard film 232 also enters the pump and the valve actuator of pipeline assembly 226 as a kind of filter to prevent minim matter.This splash guard film 232 can carry out cyclicity ground wiped clean when changing box 28.

Pipeline assembly 226 comprises that one group of solenoid valve activates pneumatic valve, and these valves link to each other in pipeline to VA23 with VA1 to PA4 with valve actuator PA1 with pump.Pipeline assembly 226 selectively provides different pressure and vacuum level with valve actuator PA (N) with VA (N) for pump under the control of controller 16.These pressure and vacuum level systematically are applied on the box 28 with pumping blood and treatment fluid.

Under the control of controller 16, pipeline assembly 226 also is that door air bag 314 (describing) and the pullover (not shown) of blood supply pressure and blood supply pipeline occluder 320 provide the pressure energy level.

As shown in Figure 1, blood supply pipeline occluder 320 is arranged in box 36, and it is close to pump and valve station 30 is following and in alignment with the port P8 and the P9 of box 28.The blood supply pipeline 266 that is connected on the port P8 passes this occluder 320.The anticoagulant pipeline 270 that is connected on the port P9 also passes this occluder 320.The pinched valve that this occluder 320 is a kind of load on spring, close has usually been passed pipeline 266 and 270 between this occluder.Cross a solenoid valve from the Pneumatic pipe cleaner of pipeline assembly 234 and offer an air bag (not shown).This air bag is opened pinched valve when the cause owing to air pressure expands, thereby opens pipeline 266 and 270.Do not having under the situation of air pressure, closed electromagnetic valve and air bag communicate with atmosphere.Thereby the pinched valve of the load on spring of this occluder 320 is closed and is closed pipeline 266 and 270.

Pipeline assembly 226 keeps multiple different pressure and vacuum condition under the control of controller 16.In described embodiment, can keep following multiple pressure and vacuum condition:

(i) P _HighBe strong pressure and P _HandleOr processing pressure is the maximum pressure that is kept in pipeline assembly 226.P _HighApply and be used for closing box valve V1 to V23.P _HandleApply the liquid transfer that is used for driving from handling pump PP1 and blood plasma pump PP2.In the scope of the preferred embodiment for P _HighAnd P _HandleUsed common force value is 500mmHg.

(ii) P _GeneralOr usual pressure applies the liquid transfer that is used for driving from blood supply interface pump PP3 and anticoagulant pump PP4.In the scope of the preferred embodiment for P _GeneralUsed common force value is 150mmHg.

(iii) to offer blood supply pressure pullover for Pcuff or pullover pressure.In the scope of the preferred embodiment, be 80mmHg for the used common force value of Pcuff.

(iv) V _HighOr strong vacuum is the vacuum that is applied in the pipeline assembly 226 the degree of depth.V _HighApply and be used for opening valve V1 to V23.In the scope of the preferred embodiment, be used for V _HighCommon degree of vacuum be-350mmHg.

(vi) V _GeneralOr conventional vacuum is to apply to be used for driving four pump PP1 each extract function in the PP4.In the scope of the preferred embodiment, be used for V _GeneralCommon degree of vacuum be-300mmHg.

(vii) P _DoorOr door pressure imposes on air bag 314 so that box 28 encapsulation are advanced in the fixed plate 216.In the scope of the preferred embodiment, be used for P _DoorCommon force value be 700mmHg.

For each pressure and vacuum capacity, the error of permission ± 20mmHg.

P _HandleBe used for handling and handle pump PP1, blood pump is sent to process chamber 18.P _HandleSize must be enough to overcome the pressure minimum that is approximately 300mmHg, this pressure is present in process chamber 18 inside usually.

Equally, P _HandleBe used for blood plasma pump PP2, advance under the situation in the process chamber 18 to have similar pressure capability because it must need be reversed pumping at blood plasma, as will be described below the same is for example during the situation of overflowing.

P _HandleAnd P _HighCan under the effect that is applied in the pressure that is used for handling these valves, not be forced to open with the upstream and downstream valve guaranteeing to use in operation under the highest pressure with pumping.Fluid passage F1 is to the designing requirement P that be interconnected of F38 by this cascade of box 28 _Handle-P _HighBe the maximum pressure that is applied.For the same reason, V _GeneralRequire minimum in V _High, can not overwhelm upstream or downstream boxlike valve V1 to V23 to PP4 to guarantee PP1.

P _GeneralBe used for driving blood supply interface pump PP3 and can equally with AC pump PP4 remain under the lower pressure.

A main strong pressure pipeline 322 and a main vacuum pipeline 324 provide P in pipeline assembly 324 _HighAnd V _HighPressure and vacuum source 234 turn round continuously so that provide P for strong pressure pipeline 322 _HighAnd for the high vacuum pipeline provides V _High

P in pressure transducer S1 monitoring strong pressure pipeline 322 _HighThis sensor S1 is controlling a solenoid valve 38.Solenoid valve 38 normally cuts out.Sensor S1 opens solenoid valve 38 so that P _HighReach its maximum set value.As long as P _HighIn the pressure range of its appointment, solenoid valve 38 cuts out, and this solenoid valve is at P _HighOpen when being reduced to below its minimum acceptable value.

Equally, a pressure transducer S5 monitoring V in high vacuum pipeline 324 _HighSensor S5 controls a solenoid valve 39.Solenoid valve 39 normally cuts out.Sensor S5 opens solenoid valve 39 so that V _HighReach its maximum set value.As long as V _HighIn the pressure range of its appointment, solenoid valve 39 cuts out, and this solenoid valve is at V _HighOpen when being reduced to below its minimum acceptable value.

A usual pressure pipeline 326 is told from strong pressure pipeline 322.A sensor S2 monitoring P in usual pressure pipeline 326 _GeneralSensor S2 controls a solenoid valve 30.Solenoid valve 30 normally cuts out.Sensor S2 opens solenoid valve 30 and upgrades from the P in the strong pressure pipeline 322 _GeneralAs long as P _GeneralIn the pressure range of its appointment, solenoid valve 30 cuts out, and this solenoid valve is at P _GeneralOpen when dropping on outside the scope of its appointment.

A processing pressure pipeline 328 is also told from strong pressure pipeline 322.Sensor S3 monitoring P in processing pressure pipeline 328 _HandleSensor S3 controls a solenoid valve 36.Solenoid valve 36 normally cuts out.Sensor S3 opens solenoid valve 36 handles from the P in the strong pressure pipeline 322 _HandleBe updated to P _HandleMaximum value.As long as P _HandleIn the pressure range of its appointment, solenoid valve 36 cuts out, and this solenoid valve is at P _HandleOpen when dropping on outside the scope of its appointment.

A conventional vacuum pipeline 330 is told from high vacuum pipeline 324.V in sensor S6 monitoring conventional vacuum pipeline 330 _GeneralSensor S6 controls a solenoid valve 31.Solenoid valve 31 normally cuts out.Sensor S6 opens solenoid valve 31 with from the V in the high vacuum pipeline 324 _GeneralBe updated to V _GeneralMaximum value.As long as V _GeneralIn the pressure range of its appointment, solenoid valve 31 cuts out, and this solenoid valve is at V _GeneralOpen when dropping on outside the scope of its appointment.

Be provided with on-line memory R1 to R5 in strong pressure pipeline 322, processing pressure pipeline 328, usual pressure pipeline 326, high vacuum pipeline 324 and conventional vacuum pipeline 330, these storagies R1 guarantees that to R5 aforesaid pressure stable and vacuum conditions are stably with predictable.

In case program is finished, solenoid valve 33 and 34 is respectively these pressure and vacuum provides an outlet.Because pumping and valve will consume pressure and vacuum constantly, so solenoid valve 33 and 34 normally cuts out.In case the blood processing program is finished, solenoid valve 33 and 34 is opened to communicate with the pipeline assembly.

Solenoid valve 28,29,35,37 and 32 have make storage R1 to R5 with vacuum and pressure are fed to the ability that the air line on the pipeline assembly 226 is kept apart.This just provides pressure/vacuum decay feedback faster, so just can finish box/pipeline assembly sealing integrity test.These solenoid valves 28,29,35,37 and 32 are normally opened, situation downforce in the instruction of not closing these solenoid valves 28,29,35,37 and 32 can not form in pipeline assembly 226 like this, and system pressure and vacuum can be discharged from a kind of pattern of mistake or under the situation of energy loss.

Solenoid valve 1 provides P to 23 _HighOr V _HighWith driven valve actuators VA1 to V23.Under motorless state, these solenoid valves are normally opened, and close to V23 to keep all boxlike valve V1.

Solenoid valve 24 and 25 provides P _HandleAnd V _GeneralHandle pump PP1 and blood plasma pump PP2 to drive.Under motorless state, these solenoid valves are opened, and all close to keep pump PP1 and PP2.

Solenoid valve 26 and 27 provides P _GeneralAnd V _GeneralTo drive blood supply interface pump PP3 and AC pump PP4.Under motorless state, these solenoid valves are opened, and all close to keep pump PP3 and PP4.

Solenoid valve 43 provides the isolation of an air bag 314 and strong pressure pipeline 322 during processor.Solenoid valve 43 is normally opened, and at P _DoorClose when arriving.A sensor S7 monitoring P _DoorAnd be lower than P at gasbag pressure _DoorThe time send signal.Because box 28 can not leave fixed plate when door air bag 314 is pressurized, thus solenoid valve 43 under motorless state be open to guarantee air bag 314 exhausts.

Solenoid valve 42 provides P _HighTo open safe occluder valve 320.The error pattern of any entail dangers to blood donors will make release (exhaust) solenoid valve 42 to close occluder 320 and to isolate blood donors.Similarly, any loss of energy will make solenoid valve 42 discharge and keep apart blood donors.

Sensor S4 monitoring Pcuff and link with solenoid valve 41 (being used for boost pressure) and solenoid valve 40 (being used for exhaust), with during processor with in the pullover scope that remains on its appointment of blood donors.Solenoid valve 40 is normally opened, pullover like this pipeline will system make mistakes or the situation of energy loss under exhaust.Solenoid valve 41 normally cuts out, to make blood donors and any P under the situation of makeing mistakes in energy loss or system _HighSeparate.

Figure 12 demonstrates a sensor S8 at the pneumatic pipeline that is used for blood donors interface pump actuator PA3.Sensor S8 is two-way focused airflow sensor, and this sensor can be monitored the air-flow that flow to blood donors interface pump actuator PA3, to detect the obstruction in the blood donors pipeline.Perhaps, the same as will be described below in more detail, can by be contained in blood donors interface pump chamber PP3 arbitrarily or the electrode among other all pump chamber PP1, PP2 or the PP4 induce electric field change and detect obstruction, and can calculate flow velocity and detecting air.

Various optionally embodiments are possible.For example, the pressure that can be used for four pump chambers and vacuum can be modified to comprise more or less different amounts or on the same group " sharing " pressure and vacuum capacity not.For an alternative embodiment, because return spring can make the boxlike valve turn back to closed position removing under the situation of vacuum, so V _HighCan leave the passage of solenoid valve 2,5,8,18,19,21,22.In addition, as the exhaust meeting shown in combining separate with multiple combination or make up.

Should also be understood that any solenoid valve used in " opening usually " pattern can pneumatically change route to be embodied as " cutting out usually ".Equally, the solenoid valve of any " cutting out usually " may be implemented as " opening usually ".

As another example of optional embodiment, if P _DoorAnd P _HighBe set to onesizely, then can remove strong pressure storage R1.In this set, door air bag 314 can be used as the strong pressure storage.In being provided with, this can also remove pressure transducer S7 and solenoid valve 43.III. other processing control parts of system

As can illustrating admirably at Figure 13, chest 36 comprises and is used for other parts of arranging compactly to help blood processing.Except the centrifugal separator station 20 and pump and valve station 30 described, chest 36 also comprises a weight station 238, station 240, operator interface and one or morely is used for the pallet 212 of container or links up with 248.The layout of these parts in chest 36 can change.In described embodiment, the same with pump and valve station 30, weight station 238, controller 16 and user's interface station 240 are arranged in the lid 40 of chest 36.Support pallet 212 near centrifugal separator station 20, be arranged in the base portion 38 of chest 36.

A. container support parts

Weight station 238 comprises a series of container hook/weighing transducers 246 along lid 40 top layout.In use (referring to Fig. 2), container 304,308,312 is suspended on hook/weighing transducer 246.

The same as will be described below in more detail, container is contained in isolated blood constitutent during the processing.Weighing transducer 246 provides output, this output-response along with the variation of weighing of time.This output is transported in the controller 16.Controller 16 is handled these variations of weighing that increase progressively, to obtain fluid treatment volume and flow velocity.This controller produces signal, partly to come the control processing program according to the processing volume that is obtained.Controller will be described below to the further details of the operation of control processing program.

Support pallet 212 is included in the molded groove in the base portion 38.These pallets 212 are holding container 276 and 280 (referring to Fig. 2).In described embodiment, on the side of lid, also be provided with additional rotary type hook 248.This hook 248 (referring to Fig. 2) is supporting container 288 during handling.In described embodiment, pallet 212 and hook 248 also comprise weighing transducer 246.

Weighing transducer 246 can be configured to different shape.In the embodiment shown in Figure 40, scale comprises and is incorporated into a pressure transducer 404 in the shell 400, and a hook 402 is installed on this shell.The top surface 420 of hook 402 is connected with a spring 406 on the sensor 404.Another spring 418 apply one by the hook 402 the carrying load the time be compressed.This spring 418 is being resisted and is being linked up with 402 load movement, surpasses predetermined weight (as 2Kg) up to this load.At this moment, electromechanical stop 408 places that hook 402 arrives in shell 400, thus overload protection is provided.

In the embodiment shown in Figure 41, a support beam 410 is sent on the force transducer 412 by hook 416 power that apply by spring 414 handles.The friction from the weighing and sensing system has in fact just been eliminated in this design.Size by the load that beam carried is linear on characteristic, and the weighing and sensing system can calibrate at any time to determine to be applied to the actual loading on the hook 416.

B. controller and station, operator interface

Processing control and monitoring function that controller 16 is carried out system 10.As Figure 14 generally shown in, controller 16 comprises a Main Processor Unit (MPU) 250, though can adopt the general microprocessor of other type, this unit for example can comprise the Pentium TM type microprocessor of being made by Intel.MPU250 is installed in the inside (as shown in figure 13) of the lid 40 of chest 36.

In a preferred embodiment, MPU250 adopts general real-time multi-task to distribute the MPU circulation to Processing tasks.A cyclicity timing relay (for example per 5 milliseconds) preemption carrying out of task and is planned the task that another prepares execution.If require to replan, want the prepreerence task of planning department in ready state so.Otherwise, determine in tabulation, to be in the next task in the ready state.

As shown in figure 14, MPU250 comprises an application controls manager 252.This application controls manager 252 is being managed the action of the routine library of at least one controlling application program 254.Each controlling application program 254 has stipulated to be used to adopt in a predefined manner the program of the given functional task at centrifugal separator station 20 and pump and valve station 30.In described embodiment, application program 254 resides among EPROM ' s among the MPU250 as process software.

The quantity 254 of application program 254 can change.In described embodiment, application program 254 comprises at least one clinical applications.This application program comprises the step that is used for carrying out a regulation Clinical Processing program.In order to give an example in described embodiment, application program 254 comprises three application programs: (1) two unit red blood cell capture program; (2) plasma collection procedure; (3) blood plasma/red blood cell capture program.The details of these programs will be described below.Certainly, can comprise additional application program.

As shown in figure 14, with this application program control manager 252 interrelates several Slave Processing Units are arranged.Though the quantity of Slave Processing Unit can change, described embodiment demonstrates five processing units 256 (1) to 256 (5).These Slave Processing Units 256 (1) to 256 (5) interrelate with low level peripheral controllers 258 again so that control pump in pipeline assembly 226, weighing transducer 246, pump and the valve station and the valve actuator PA1 air pressure to other functional hardware of PA4 and VA1 and VA23, the motor that is used for centrifugal separator station 20, interface inductive post 332 and system.

MPU250 has comprised the instruction that is used for peripheral controllers 258 in EPROM ' s, these instructions are down passed on the suitable Slave Processing Unit 256 (1) to 256 (5) when starting.Application program control manager 252 also will pass on the suitable Slave Processing Unit 256 (1) to 256 (5) under the operating parameter by application program 254 defineds that start.

Adopt the information of this download, Slave Processing Unit 256 (1) to 256 (5) continues to produce the device directive that is used for peripheral controllers 258, thereby makes this hardware operate to carry out this program in the mode of appointment.Peripheral controllers 258 turns back to current hardware status information on the suitable Slave Processing Unit 256 (1) to 256 (5), and these processing units produce necessary instruction again to keep the operating parameter by application controls manager 252 defineds.

In described embodiment, a Slave Processing Unit 256 (2) is carried out an environment effector's function.If Slave Processing Unit breaks down and can not keep desired operational condition, processing unit 256 (2) just receives redundant current hardware status information and reports to MPU250.

As shown in figure 14, MPU250 also comprises an interactive user interface 260, and this interface allows operator can see and understand information at the operation of system 10.This interface 260 links to each other with station, interface 240.This interface 260 allows operator can use station, interface 240, selecting to reside in the application program 254 in the application controls manager 252, and some function and the performance standard of change system 10.

As shown in figure 13, station, interface 240 comprises an interface screen 262 that is contained in the lid 40.This interface screen 262 has shown the information of being observed by operator with alphanumeric form and with the form of image.In described preferred embodiment, this interface screen 262 is also as input device.It is by the input of common contact action reception from operator.

C. the on-line monitoring of pump duty

1. weight monitoring

Adopt platform scale 246, in the upstream or the downstream of pump, controller 16 just can be determined the actual volume of the fluid that each pump stroke flows through continuously and revise any and the deviation flow that requires.Controller 16 can also be diagnosed out abnormal conditions, for example leakage in the fluid passage and obstruction.The measurement of this monitoring and be controlled at automatic plasma separation exchange process and need in using, wherein anticoagulant must accurately measure at the time standby whole blood from blood donors blood drawing, and wherein quality of product (as haematocrit, blood plasma purity) is subjected to the influence of the validity of flow rate pump.

Each all provides metastable specified stroke capacity, i.e. a SV to pump PP1 in box 28 to PP4.Therefore the flow velocity of given pump can be represented with following formula:

Wherein:

Q is the flow velocity of pump.

SV is a stroke capacity, the volume that promptly each pump circular flow is crossed.

T _PumpFlow out the time of pump chamber for fluid.

T _{Flowing full}For pump is full of time of fluid, and

T _IdleTime for the pump free time that is to say, when not having fluid motion to occur.

SV can be influenced by pump and the downstream that adds and the interaction in upstream fluid loop.This is similar to the interaction of the input resistance of the load that imperfect current source and it seems in the theory of loop.Therefore, Shi Ji SV can be different from nominal SV.

So actual fluid flow Q in the volume of time per unit _RealCan represent with following formula:

Wherein:

Q _RealIt is actual fluid flow with the stereometer of time per unit.

SV _TheoreticalBe the theoretic stroke volume that goes out according to the pump chamber geometry computations.K is a correction factor, and the interaction between pump and the upstream and downstream pressure has been described.

Actual flow rate can determine in gravimetric analysis, adopts upstream or downstream platform scale 246 according to the following relationship formula:

Wherein:

Δ Wt is the change on the fluid weight that is detected by upstream or downstream platform scale 246 during the time period Δ T,

ρ is a fluid density,

Δ T is for detecting the time period that weight Δ Wt changes in platform scale 246.

Following representation is by obtaining equation (2) and (3) merging:

According to formula (4) calculating K, adjust T then _IdleThereby, obtain required flow rate, as follows:

Controller 16 upgrades k and T continually _IdleNumerical value so that regulate flow velocity.

Perhaps, controller 6 can change T _PumpAnd/or T _{Flowing full}And/or T _IdleWith regulations speed.

In this layout, with time lag constituent element T _Pump, T _{Flowing full}Or T _IdleIn one or morely be adjusted to a new size to obtain Q according to following relationship _Requirement:

Wherein

T _{N (adjusting)}For regulating to obtain desired flow velocity Q _RequirementThe size of time lag constituent element afterwards.

T _{N (not regulating)}Be the T that does not regulate _StrokeThe size of constituent element at interval At All Other Times.Regulating to obtain desired flow rate Q _RequirementThe intervals of strokes through regulating afterwards is T _{N (adjusting)}And T _{N (not regulating)}Summation.

Controller 16 also provides correction factor k as diagnostic tool, to determine abnormal operational circumstances.For example, if k is significantly different with its nominal value, leaking or blocking may appear in the fluid passage so.Equally, if the calculated value of k and the desired extremely different words of numerical value, the direction of pump may be reversed so.

By platform scale 246, even these pumps do not make fluid move, controller 16 also can carry out inline diagnosis.For example, if do not need when flowing, platform scale detects weight change, may have valve or a kind of leakage of a leakage so in device 264.

At calculating K and T _IdleAnd/or T _PumpAnd/or T _{Flowing full}The time, controller 16 can rely on the repeatedly measurement of Δ Wt and/or Δ T.Can adopt multiple averaging to reduce the error relevant with estimation scheme with recursion method (for example recursive least square, Kalman filter etc.).

Above-mentioned monitoring method can be applied to other stable stroke capacity pump, for example peristaltic pump etc.

2. electronic monitoring

Arrange optionally in (referring to Figure 42) that at one controller 16 comprises each pumping plant PP1 of being arranged on the box 28 metal film 422 to the pump chamber of PP4.Electrode 422 links to each other with a power supply 424.Electric current produces an electric field at corresponding pump chamber PP1 by the passage of each electrode 422 in PP4.

Fluid is drawn into and discharges pump chamber PP1 and change electric field, thereby cause passing the change of total capacity in the loop of electrode 422 to the alternation deflection of the diaphragm 194 of PP4.Capacity is drawn into pump chamber PP1 at fluid to be increased in PP4, and capacity reduces when pump chamber PP1 discharges to PP4 at fluid.

Controller 16 comprises a capacitive transducer 426 that links to each other with each electrode 422 (for example Qprox E2S).This capacitive transducer 426 has write down the change for the electric capacity of the electrode of each pump chamber PP1 in the PP4.Being used for one has a high signal value for the capacitance signal (diaphragm position 194a) when pump chamber has been full of liquid of fixed electrode 422, (diaphragm position 194b) do not have a lower signal value and the signal value that has intermediate range in the position of diaphragm between position 194a and 194b when pump chamber has fluid.

In the blood processing program at first, controller 16 is with the maximum stroke volume SV of the offset correction between high signal value of each sensor and the low signal value to respective pump chambers.Then controller 16 make in subsequently extraction and discharge between the minimum and maximum signal value that cycle period responds to difference with extract out by pump chamber and the fluid volume of discharge is associated.This controller 16 is adding up through the fluid volume of sample time period institute's pumping to produce actual flow rate.

Controller 16 is compared actual flow rate with desired flow rate.If there is a deviation, controller 16 changes are transported to the pneumatic pressure pulses of actuator PA1 to PA4 so, to regulate T _IdleAnd/or T _PumpAnd/or T _{Flowing full}Thereby, make this minimum deviation.

Controller 16 also is used for going out the malfunction situation and producing alarm output according to the change detection of electric field.In described embodiment, the size of controller 16 monitoring low signal value increased along with the past of time.The increase of this size reflects in pump chamber inside and has air.

In described embodiment, controller 16 also produces a derivative of the signal output of sensor 426.The change of this derivative or do not have derivative to reflect the partially or completely obstruction that flows to PP4 by pump chamber PP1.Whether according to occurring blocking to outlet or the ingress of PP4 at pump chamber PP1, this derivative self also can change with a kind of unique mode.

IV. blood processing program

A. two RBC capture programs (not having sampled plasma)

During this program, handled eccentrically to produce red blood cell up to two units (approximately 500ml) so that gather from the whole blood of blood donors.All plasma component are returned to blood donors.This program is known as two red blood cell capture programs in brief.

Before carrying out two red blood cell capture programs and any blood collection program, controller 16 is handled pipeline assembly 28 to carry out the leak check of a suitable box 28, to determine whether leakage is arranged in box 28.Leak the desired blood collection program of controller 16 beginnings in case finish the leak check of this box and do not find.

This pair red blood cell capture program comprises that one is gathered circulation, a collection circulation, a later stage collection circulation and a storage preparation circulation in advance.Gather cycle period device 264 exhausting air at first before venipuncture pre-.Gathering cycle period, handling the whole blood extracted out from blood donors, simultaneously blood plasma is being returned to blood donors to gather the red blood cell of two units.Gather cycle period in the later stage, unnecessary blood plasma is returned to blood donors, and this device is full of physiological saline.Prepare cycle period in storage, add a kind of red blood cell storing solution.

1. pre-the collection circulated

A. anticoagulant perfusion

Gathering circuit in advance in the phase I (AC perfusion 1), pipe 200 clamped the closing (referring to Figure 10) of guiding fleams 268.This blood processing loop 46 (being applied to by the pressure selectivity on the valve and pumping plant of box) is programmed handling blood donors interface pump PP3, thus by anticoagulant pipe 270 extract anticoagulants and by Y connector 272 upward to blood donors pipe 266 (for example enter and go out) by valve V11 by valve V13.This loop also is programmed will remain in air in anticoagulant pipe 270, blood donors pipe 266 and the box and is transported to container 312 in the processing.The air detectors 298 that this stage continues to carry out up to along blood donors pipe 266 detects liquid, guarantees the pump function of blood donors interface pump PP3.

In the second stage of pre-collection circulation (AC perfusion 2), this loop is programmed to handle anticoagulant pump PP4 anticoagulant is delivered into container handling 312.Weight in the container handling changes.AC perfusion 2 stops when anticoagulant pump PP4 is delivered into the anticoagulant (for example 10g) of predetermined in the container handling 312, thereby has guaranteed its pump function.

B. the perfusion of physiological saline

In the phase III of pre-collection circulation (physiological saline perfusion 1), process chamber 46 keeps static.The loop is programmed to handle and handles pumping plant PP1 to extract physiological saline by handling pump PP1 from physiological saline container 288.This just produces a physiological saline by the reverse flow of static process chamber 46 towards the container of handling 312.Therefore, physiological saline is extracted by process chamber 46 by valve V14 and enters into processing pump PP1 from physiological saline container 288.This physiological saline is discharged towards the container of handling 312 from pumping plant PP1 by valve 9.Monitor out the weight change in the physiology saline container 288.This stage stops under the situation that the predetermined weight of noting physiological saline container 288 changes, and this just represents that the physiological saline volume of carrying is enough to be full of at first only about half of (for example about 60g) of process chamber 46.

Along with process chamber 46 has been full of the physiological saline of half perfusion, begin to gather in advance circuit quadravalence section (physiological saline perfusion 2).Process chamber 46 low speed (for example about 300RPM) rotate, and coincidence circuit continues to carry out work in same mode in physiological saline perfusion 3.Extra physiological saline is drawn into pumping plant PP1 by valve V14 and is discharged from pumping plant PP1 and enters by valve V9 and manages everywhere in the container 312.Weight change in the monitoring container handling 312.This stage stops under the situation that the predetermined weight of noting physiological saline container 288 changes, and this just represents that the physiological saline volume of carrying is enough to be full of basically process chamber 46 (for example about 80g).

In the five-stage of pre-collection circulation (physiological saline perfusion 3), the loop is programmed at first to handle the pumping plant PP1 that is handling, and transports from handling the physiological saline of container 312 and turning back to physiological saline container 288 by blood plasma pumping plant PP2 with all output ports by separation equipment.This has just finished process chamber 46 and the perfusion of the pumping plant PP1 that handling (advance and pump out by valve V14 by valve V9 pumping), has poured into the blood plasma pumping plant simultaneously, and valve V7, V6, V10 and V12 be open to allow physiological saline flow passively.In the meantime, process chamber 46 speed of rotating 0 and 300RPM between linear change continuously.Weight change in the monitoring container handling 312.When having carried the physiological saline of predetermined initial volume by this way, the loop is programmed to close V7, to open valve V9 and V14, and begin physiological saline to be pumped into physiological saline container 288 by blood plasma pump PP2, enter and go out by valve V12, handle pump PP1 thereby physiological saline can be flowed through passively by valve V10.Physiological saline turns back to physiological saline container 288 by this way from container handling 312, represent that up to weight induction the physiological saline of the minimum volume that presets enters into this container handling 312.

Pre-the collection the 6th stage of circuit (discharging the blood donors pipeline), this loop be programmed with before venipuncture by handle blood donors interface pump PP3 with the anticoagulant pumping by anticoagulant pump PP4 and enter and manage everywhere in the container 312, thereby emptying is from the air of venipuncture needle.

Gather in the 7th stage of circuit (venipuncture) pre-, this loop is programmed with closeall valve V1 to V23, so just can finish venipuncture.

Be summarized in the following table in pre-design of gathering the loop of cycle period.

Table

At the pre-program setting (two red blood cell capture program) of gathering cycle period to the blood processing loop

Stage	AC perfusion	1	AC perfusion 2	Physiological saline perfusion 1	Physiological saline perfusion 2	Physiological saline perfusion 3	Emptying blood donors pipeline	Venipuncture
									V1
V2
								V3		。	·	·	·	。	·
V4	·	·	。	·	·	·	·
								V5	·	·	·	·	·	·	·
V6	·	·	·	·	。	·	·
								V7	·	·	·	·	。	·	·
V8	·	·	·	·	·	·	·
								V9	·	·	。/ pump	/ pump	/ pump into (stage 1).(stage 2)
V10					(stage 1)./ pump (stage 2)
								V11	/ pump		·	·	·	。/ pump into
V12					(stage 1)./ pump into (stage 2)
								V13	/ pump into		·	·	·	。/ pump
V14			/ pump into	/ pump into	/ pump (stage 1) (stage 2)
								V15		/ pump into and pump					·
V16	·	·	·	·	·	·	·
								V17	·	·	·	·	·	·	·
V18	。	。	·	·	·	。	·
								V19	。	。	·	·	·	。	·
V20	。	。/ pump and pump into					·
								V21	·	·	·	·	·	·	·
V22	·	·	。	。	。	·	·
								V23	·	·	。	。	。
PP1	■	■			(stage 1)	■	■
								PP2	■	■	■	■	(stage 2)	■	■
PP3		■	■	■	■		■
								PP4	■		■	■	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

C. gather circulation

I. hemoperfusion

By venipuncture, open the conduit 300 that leads to fleams 268.Gathering the circuit phase I (hemoperfusion 1), the program (by pressure to the valve of box or the selectively acting on the pumping plant) of setting blood processing loop 46 control blood donors interface pump PP3 (promptly enter logical valve V13 and discharge logical valve V11) and anticoagulant pump PP4 (promptly enter logical valve V20 and discharge and lead to valve V15) with through blood transfusion tube 270 with anticoagulated blood suction processor 312 in.Because the monitoring of weighing transducer, so the anticoagulated whole blood that this stage can continue to carry out until increment enters container handling 312.

At next stage (hemoperfusion 2), set the program in blood processing loop 46 and come control processing pumping plant PP1, with from container handling 312, extract anticoagulation through segregating unit.During this stage, make physiological saline return blood donors by the blood exchange.This stage is injected segregating unit with anticoagulated whole blood.Because the monitoring of weighing transducer, so the anticoagulated whole blood that this stage can continue to carry out until increment leaves container handling 312.

B. extracting whole blood or do not extracting the blood separation that whole blood carries out simultaneously

At blood collection circuit next stage (blood separation extracts whole blood simultaneously), the program of setting blood processing loop 46 is to handle blood donors interface pump PP3 (promptly enter logical valve V13 and discharge logical valve V11); Anticoagulant pump PP4 (promptly enter logical valve V20 and discharge logical valve V15); Handle pumping plant PP1 (promptly enter logical valve V9 and discharge logical valve V14) and blood plasma pump PP2 (promptly enter logical valve V12 and discharge logical valve V10).This structure can be imported process chamber with blood so that separate from container handling 312 simultaneously with anticoagulated blood suction container handling 312.This structure also can extract blood plasma and send into blood plasma container 304 from process chamber, extract red blood cell simultaneously and send into red blood cell container 308 from process chamber.This stage will continue to carry out to be collected in blood plasma collection container 304 (by the weighing transducer monitoring) or to be collected in (in the weighing transducer monitoring) in the red blood cell collection container until the red blood cell of aim parameter until increment blood plasma.

If before the blood plasma of having gathered aim parameter or red blood cell, botal blood volume in the container handling 312 reaches predetermined maximum threshold, should be another stage so sets the program (in the blood separation of not extracting under the whole blood situation) in described loop, (go back cut-off valve V13 simultaneously so that stop the operation of blood donors interface pumping plant PP3, V11, V18 and V13) with the collection of whole blood in the termination container 312, still continue the separation of blood simultaneously.If during blood separation, botal blood volume reaches predetermined minimum threshold in container handling 312, but before gathering the blood plasma or red blood cell of aim parameter, the loop is programmed returning the stage that blood separation extracts whole blood simultaneously, thereby allows whole blood to enter container handling 312.Set the program in loop, with at the blood plasma of gathering necessary amounts or before the red blood cell of gathering aim parameter, whichever takes place earlier, all can be according to the high and low threshold value of container handling 312, extract simultaneously between the stage of whole blood and stage that blood separation does not extract whole blood simultaneously in blood separation and to switch.

C. return blood plasma and physiological saline

If also do not collect the red blood cell of aim parameter, then blood collection circuit next stage (returning blood plasma by separation) programming blood processing loop 46, to handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13); Handle pumping plant PP1 (promptly enter logical valve V9 and discharge logical valve V14) and blood plasma pump PP2 (promptly enter logical valve V12 and discharge logical valve V10).This structure is conveyed into process chamber with the whole blood of anti-agglomeration so that separate from container handling 312, extracts blood plasma simultaneously and sends into blood plasma container 304 and extract red blood cell and send in the red blood cell container 308.This structure also can be delivered to blood donors with blood plasma from blood plasma container 304, also with online mode the physiological saline from container 288 is mixed with the blood plasma that returns simultaneously.The on-line mixing of physiological saline and blood plasma can improve the temperature of physiological saline and improve the travelling comfort of blood donors.Because the monitoring of weighing transducer, this stage will continue to carry out until blood plasma container 304 emptyings.

If before blood plasma container 304 emptyings, botal blood volume in container handling 312 reaches the low threshold value of regulation, then the loop is programmed to enter another stage (returning blood plasma under not separation situation), thereby the operation of termination pump PP1 (is gone back cut-off valve V9 simultaneously, V10, V12 and V14) to stop blood separation.This stage continues to carry out until blood plasma container 304 emptyings.

In case emptying blood plasma container 304, the loop is programmed to enter such stage (filling the blood donors pipeline), fill blood donors flexible pipe 266 so that handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) to extract whole blood from container handling 312, thereby purify blood plasma (mixing), think that circulation of another extraction whole blood is got ready with physiological saline.

Subsequently, the loop is programmed to carry out another blood separation and extracts the stage of whole blood simultaneously, so that recharge container handling 312.In in succession blood separation with till returning blood plasma and in the stage loop setting program being shown the red blood cell that has collected aequum in red blood cell collection container 308 until weighing transducer.When also not gathering the red blood cell of aim parameter, then begin the later stage collection.

Following table has been summarized the loop programming during gathering the cycle stage.

Table

Program setting (two red blood cell capture program) in the blood processing loop of gathering cycle period

Stage	Hemoperfusion	1	Hemoperfusion 2	Blood separation extracts whole blood (not extracting whole blood) simultaneously	Return blood plasma/separation (not separating)	Fill up the blood donors pipeline
							V1
V2	·	·	。	。(·)	·
						V3	。	·	。(·)	·	·
V4	·	·	·	·	·
						V5	·	·	。	。	·
V6	·	·	·	。/ exchange with V23
						V7			·	·	。
V8	·	·	·	·	·
						V9	·	。/ pump into	/ pump into	/ pump into ()
V10			/ pump	/ pump ()
						V11	/ pump		。/ pump ()	/ pump into	/ pump into
V12			/ pump into	/ pump into ()
						V13	/ pump into		。/ pump into ()	/ pump	/ pump
V14		/ pump	/ pump	/ pump ()
						V15	/ pump		/ pump ()
V16
						V17
V18		。	。(·)	。	。
						V19	。	·	。(·)	·	·
V20	。/ pump		/ pump into ()
						V21
V22					·
						V23	·	·	·	。/ exchange with V6
PP1	■			(■)	■
						PP2	■	■		(■)	■
PP3		■	(■)
						PP4		■	(■)	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

D. the later stage is gathered circulation

In case collected the red blood cell (by the weighing transducer monitoring) of aim parameter, the loop is programmed to carry out the later stage and gathers the cycle stage.

1. return excessive blood plasma

Gather the circuit phase I (excessive blood plasma returns) in the later stage, the loop is programmed to stop blood to the supply of process chamber with from the extraction of process chamber, simultaneously, operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) is delivered to blood donors with the blood plasma that will be kept in the blood plasma container 304.Also set the program in loop so that from the physiological saline of container 288 and the blood plasma on-line mixing of returning in this stage.Because the monitoring of weighing transducer, this stage program continues to carry out until emptying blood plasma container 304.

2. the purification of physiological saline

Gather circuit next stage (purification of physiological saline) in the later stage, the program in setting loop is handled blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) and is passed through segregating unit with the physiological saline that transports from container 288, exchange in the container handling 312 with blood constitutent, get ready thereby return blood donors for them with segregating unit.This stage has reduced the loss of blood donors blood.Because the monitoring of weighing transducer, this stage continues to carry out pumping out until segregating unit the physiological saline of prearranging quatity.

3. finally return blood donors

Gather circuit next stage (finally returning) in the later stage, set the program in loop and operate blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that the blood constitutent in the container handling 312 is delivered to blood donors.Physiological saline is intermittently mixed with blood constitutent.Because the monitoring of weighing transducer, this stage continues to carry out until container handling 312 emptyings.

In next stage (fluid communication), set the program in loop and operate blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that physiological saline is delivered to blood donors.Because the monitoring of weighing transducer, this stage continues to carry out until injecting predetermined exchange volume flow rate.

Gather circuit next stage (emptying of container handling) in the later stage, set the program in loop and operate blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that whole remaining contents in the container handling 312 are delivered to blood donors, so that get ready for the content of in container 308 and 312, storing in the separation of red blood cells container 308.Because the monitoring of weighing transducer, the reading that this stage continues to carry out until container handling 312 is zero, and air detectors detects air.

In this stage, the loop is programmed to close all valves and to make all pumping plants be in idle state, so that can remove fleams 268 from blood donors.

In following table, summarized the loop programming during the later stage is gathered the cycle stage.

Table

(two red blood cell capture program)

Stage	Excessive blood plasma returns	Physiological saline purifies	Finally return	Fluid communication	Emptying in container handling
						V1				·	。
V2	·	·	·	·	·
						V3	·	·	·	·	·
V4	·	。	·	·	·
						V5	。	·	·	·	·
V6	。/ exchange with V23
						V7			/ exchange with V23
V8	·	·	·	·	·
						V9	。	。	·	·	·
V10	·	·	·	·	·
						V11	。/ pump into	/ pump into/pump	/ pump into	/ pump into	/ pump into
V12
						V13	/ pump		/ pump	/ pump	/ pump
V14			·	·	·
						V15	·	·	·	·	·
V16	·	·	·	·	·
						V17	·	·	·	·	·
V18	。	·	。	。	。
						V19	·	·	·	·	·
V20	·	·	·	·	·
						V21	·	·	·	·	·
V22	。	。	。	。	·
						V23	。/ exchange with V6		。/ exchange with V7		·
PP1	■	■	■	■	■
						PP2	■	■	■	■	■
PP3	□	□	□	□	□
						PP4	■	■	■	■	■

Illustrate:.Represent an open valve; Represent a cut-off valve;/ be illustrated in opening and closing valve during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

E. circulation is prepared in storage

1. separate RBC

Prepare the circuit phase I (separating RBC) in storage, the loop is programmed with operation blood donors interface pumping plant PP3, so that the content of half amount in the red blood cell collection container 308 is sent into container handling 312.Pump output is by the weighing transducer monitoring of container 308 and 312.

2. add the RBC preservative

Prepare circuit next stage (storing solution is added into container handling and storing solution is added into the red blood cell collection container) in storage, set the program in loop and handle blood donors interface pumping plant PP3, with at first from container 280 with the red blood cell storing solution of aequum input container handling 312, and subsequently with its input red blood cell collection container 308.The conveying of aequum is monitored by platform scale.

In next stage and terminal stage (termination routine), the loop is programmed closing all valves and to make all pumping plants idle, so that can separate and remove red blood cell container 308 and 312 for storage.At this moment, can remove and the remainder of discarded disposable apparatus.

In following table general description during the cycle stage is prepared in storage the program setting in loop.

Table

Prepare the program setting (two red blood cell capture program) in cycle period blood processing loop in storage

Stage	Between RBC collection and container handling, separate RBC	Storing solution is added to container handling	Storing solution is added to the RBC collection container	Termination routine (cancellation venipuncture)
					V1
V2		·	。	·
					V3	。/ with the exchange of V11 and V4		·	·
V4	。/ with the exchange of V11 and V4			·
					V5	·	·	·	·
V6	·	·	·	·
					V7	·	·	·	·
V8	·	·	·	·
					V9	·	·	·	·
V10	·	·	·	·
					V11	。/ pump into/pump	/ pump into/pump	/ pump into/pump
V12
					V13
V14
					V15
V16			。	·
					V17	·	·	·	·
V18	·	·	·	·
					V19	·	·	·	·
V20	·	·	·	·
					V21	·	。	。	·
V22	·	·	·	·
					V23	·	·	·	·
PP1	■	■	■	■
					PP2	■	■	■	■
PP3	□	□	□	■
					PP4	■	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

F. sampled plasma (no red blood cell collection)

During this program, carry out centrifugal treating and think that from the whole blood of a blood donors collection provides the blood plasma that reaches 880ml.Make all red blood cells return blood donors.This program is called as plasma collection procedure in shorthand.

The program setting in blood processing loop 46 (by the selectively acting of pressure to valve in the case and pumping plant) can use and two identical universal devices 264 of red blood cell capture program.

Described program comprises a pre-collection circulation, and one gathers circulation, and later stage collection circulation.

Gather cycle period pre-, device 264 is with exhausting air before venipuncture.Gathering cycle period, handling the whole blood that extracts from blood donors, simultaneously red blood cell is being returned blood donors to gather blood plasma.Gather circulation in the later stage, excessive blood plasma is returned blood donors, and be full of described device with physiological saline.

1. pre-the collection circulated

A. the perfusion of anticoagulant

In the pre-collection circulation of sampled plasma (no red blood cell) program, box be programmed with carry out with two red blood cell capture programs in AC perfusion 1 and AC pour into identical AC of 2 stages pour into 1 and AC poured into for 2 stages.

B. the perfusion of physiological saline

Pretreatment circulation in sampled plasma (no red blood cell) program, box was programmed with the perfusion 3 of the perfusion 2 of the perfusion 1 of carrying out physiological saline, physiological saline and physiological saline, emptying blood donors pipeline, and venipuncture stage, and perfusion 3, the emptying blood donors pipeline of the perfusion 1 of the physiological saline in these stages and the two red blood cell capture programs, the perfusion 2 of physiological saline, physiological saline, to reach the venipuncture stage identical.

In following form general description pre-gather the cycle stage during the program setting in loop.

Table

During pre-acquisition phase to the program setting (plasma collection procedure) in blood processing loop

Stage	AC perfusion	1	AC perfusion 2	Physiological saline perfusion 1	Physiological saline perfusion 2	Physiological saline perfusion 3	Emptying blood donors pipeline	Venipuncture
									V1
V2
								V3		。	·	·	·	。	·
V4	·	·	。	·	·	·	·
								V5	·	·	·	·	·	·	·
V6	·	·	·	·	。	·	·
								V7	·	·	·	·	。	·	·
V8	·	·	·	·	·	·	·
								V9	·	·	。/ pump	/ pump	/ pump into (stage 1).(stage 2)
V10					(stage 1)./ pump (stage 2)
								V11	/ pump		·	·	·	。/ pump into
V12					(stage 1)./ pump into (stage 2)
								V13	/ pump into		·	·	·	。/ pump
V14			/ pump into	/ pump into	/ pump (stage 1).(stage 2)
								V15		。/ pump into and pump					·
V16	·	·	·	·	·	·	·
								V17	·	·	·	·	·	·	·
V18	。	。	·	·	·	。	·
								V19	。	。	·	·	·	。	·
V20	。	。/ pump and pump into					·
								V21	·	·	·	·	·	·	·
V22	·	·	。	。	。	·	·
								V23	·	·	。	。	。
PP1	■	■			(stage 1)	■	■
								PP2	■	■	■	■	(stage 2)	■	■
PP3		■	■	■	■		■

PP4

■

□

■

■

■

■

■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

2. gather circulation

A. hemoperfusion

By venipuncture, open the conduit 300 that leads to fleams 268.Gathering the circuit phase I (hemoperfusion 1), set the program in blood processing loop 46 and handle blood donors interface pump PP3 (promptly enter logical valve V13 and discharge logical valve V11) and anticoagulant pump PP4 (promptly enter logical valve V20 and discharge logical valve V15), thus with the identical mode of having described of pair 1 stages of red blood cell capture program hemoperfusion that is used for through blood transfusion tube 270 with anticoagulated blood suction processor 312 in.

At next stage (hemoperfusion 2), the program of setting blood processing loop 46 is handled and is handled pumping plant PP1, thus with the identical mode of having described of two 2 stages of red blood cell capture program hemoperfusion that is used for from container handling 312, extract anticoagulated blood through segregating unit.During this stage, make physiological saline return blood donors by the blood exchange.

B. blood separation extracts whole blood simultaneously or does not extract whole blood

At blood collection circuit next stage (blood separation extracts whole blood simultaneously), set the program in blood processing loop 46, thereby to separate and extract identical mode of whole blood stage simultaneously and handle blood donors interface pump PP3 (promptly enter logical valve V13 and discharge logical valve V11) with two red blood cell capture program hemoperfusions that are used for of having described; Anticoagulant pump PP4 (promptly enter logical valve V20 and discharge logical valve V15); Handle pump PP1 (promptly enter logical valve V9 and discharge logical valve V14) and blood plasma pump PP2 (promptly enter logical valve V12 and discharge logical valve V10).This structure can be imported process chamber with blood so that separate from container handling 312 simultaneously with anticoagulated blood suction container handling 312.This structure also can extract blood plasma and send into blood plasma container 304 from process chamber, extract red blood cell simultaneously and send into red blood cell container 308 from process chamber.This stage will continue to carry out blood plasma until aim parameter and be collected in blood plasma collection container 304 (by the monitoring of weighing transducer) or be collected in (by the monitoring of weighing transducer) in the red blood cell collection container until the red blood cell of aim parameter.

As in two red blood cell capture programs, if before the blood plasma of having gathered aim parameter or red blood cell, botal blood volume in the container handling 312 reaches predetermined maximum threshold, the program that should set described loop so is to enter another stage (in the blood separation of not extracting under the whole blood situation), (go back cut-off valve V13 simultaneously so that stop the operation of blood donors interface pumping plant PP3, V11, V18 and V13) with the collection of whole blood in the termination container 312, still continue the separation of blood simultaneously.If during blood separation, botal blood volume reaches predetermined minimum threshold in container handling 312, but before gathering the blood plasma or red blood cell of aim parameter, the program of setting the loop to be returning the stage that blood separation extracts whole blood simultaneously, thereby allows container handling 312 is recharged.The program of setting the loop is with at the blood plasma of gathering necessary amounts or before the red blood cell of gathering aim parameter, whichever takes place earlier, according to the high and low threshold value in the container handling 312, extract whole blood simultaneously and between the stage of not extracting whole blood, switch in blood separation.

C. return red blood cell/physiological saline

If also do not gather the blood plasma of aim parameter, then blood collection circuit next stage (red blood cell that returns with separation) programming blood processing loop 46, to handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13); Handle pumping plant PP1 (promptly enter logical valve V9 and discharge logical valve V14) and blood plasma pump PP2 (promptly enter logical valve V12 and discharge logical valve V10).This structure is conveyed into process chamber with the whole blood of anti-agglomeration so that separate from container handling 312, extracts blood plasma simultaneously and sends into blood plasma container 304 and extract red blood cell and send in the red blood cell container 308.This structure also can be delivered to blood donors with red blood cell from red blood cell container 308.Also the physiological saline from container 288 is mixed with the red blood cell that returns simultaneously with online mode.Physiological saline and erythrocytic on-line mixing can improve the temperature of physiological saline and improve the travelling comfort of blood donors.Physiological saline and erythrocytic on-line mixing also can reduce the erythrocytic haematocrit that is returned to blood donors, thereby allow to use the fleams of big specification (promptly than minor diameter), thereby further improve the travelling comfort of blood donors.Because the control of weighing transducer, this stage will continue to carry out until 308 emptyings of red blood cell container.

If before 308 emptyings of red blood cell container, botal blood volume in container handling 312 reaches the low threshold value of regulation, then the loop is programmed to enter another stage (red blood cell returns under not separation situation), so that the operation of termination pumping plant PP1 (is gone back cut-off valve V9 simultaneously, V10, V12 and V14) to stop blood separation.This stage continues to carry out until 308 emptyings of red blood cell container.

In case emptying red blood cell container 308, the loop is programmed to enter another stage (filling the blood donors pipeline), fill blood donors flexible pipe 266 so that handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) to extract whole bloods, think that circulation of another extraction whole blood gets ready thereby purify red blood cell (mixing) with physiological saline from container handling 312.

Subsequently, the loop is programmed to carry out another blood separation and extracts the stage of whole blood simultaneously, so that recharge container handling 312.As described, the loop is programmed the continuous drawing whole blood and returns red blood cell/physiological saline circulation, shows till the blood plasma that has collected desired quantity in blood plasma collection container 304 until weighing transducer.When collecting the blood plasma of aim parameter, the collection circulation of beginning later stage,

Following table has been summarized the programming in the loop during gathering the cycle stage.

Table

Gathering the program setting (plasma collection procedure) of cycle period to the blood processing loop

Stage	Hemoperfusion	1	Hemoperfusion 2	Blood separation extracts whole blood (not extracting whole blood) simultaneously	Under the situation of separating (not separating), return red blood cell/physiological saline	Fill the blood donors pipeline
							V1
V2	·	·	。	。	·
						V3	。	·	。(·)	·	·
V4	·	·	·	·	·
						V5	·	·	。	。(·)	·
V6	·	·	·	·	·
						V7	·	。	·	。/ exchange with V23
V8	·	·	·	·	·
						V9	·	。/ pump into	/ pump into	/ pump into ()
V10			/ pump	/ pump ()
						V11	/ pump		。/ pump ()	/ pump into	/ pump into
V12			/ pump into	/ pump into ()
						V13	/ pump into		。/ pump into ()	/ pump	/ pump
V14		/ pump	/ pump	/ pump ()
						V15	/ pump		/ pump ()
V16
						V17
V18		。	。(·)	。	。
						V19	。	·	。(·)	·	·
V20	。/ pump		/ pump into ()
						V21
V22					·
						V23	·	·	·	。/ exchange with V7
PP1	■			(■)	■
						PP2	■	■		(■)	■
PP3		■	(■)
						PP4		■	(■)	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

D. the later stage is gathered circulation

In case collected the blood plasma (by the weighing transducer monitoring) of aim parameter, the loop is programmed to carry out the later stage and gathers the circuit stage.

3. return excessive red blood cell

Gather the circuit phase I (dismounting blood plasma collection container) in the later stage, the loop is programmed with closeall valve and stops using all pumping plants, to allow separating of blood plasma collection container 304 and device 264.

Gather circuit second stage (returning red blood cell) in the later stage, the loop is programmed with operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that remaining red blood cell in the red blood cell collection container 308 is delivered to blood donors.Also be programmed so that from the physiological saline of container 288 and the blood plasma on-line mixing of returning in this stage loop.Because the monitoring of weighing transducer, this stage program continues to carry out until emptying red blood cell container 308.

4. the purification of physiological saline

Gather circuit next stage (purification of physiological saline) in the later stage, the loop is programmed to handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) passes through segregating unit with the physiological saline that transports from container 288, so that the blood constitutent of segregating unit is exchanged in the container handling 312, gets ready thereby return blood donors for them.This stage has reduced the loss of blood donors blood.Because the monitoring of weighing transducer, this stage continues to carry out pumping out until segregating unit the physiological saline of prearranging quatity.

5. finally return blood donors

Gather circuit next stage (finally returning) in the later stage, the loop is programmed with operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that the blood constitutent in the container handling 312 is delivered to blood donors.Physiological saline is intermittently mixed with blood constitutent.Because the monitoring of weighing transducer, this stage continues to carry out until container handling 312 emptyings.

In next stage (fluid communication), the loop is programmed with operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that physiological saline is delivered to blood donors, because the monitoring of weighing transducer, this stage continues to carry out the exchange volume flow rate until injecting regulation.

At terminal stage (termination routine), the loop is programmed with closeall valve and makes all pumping plants idle, so that can stop venipuncture, and separates and removes blood plasma container for storage.And can remove and the remainder of discarded disposable apparatus.

The programming of in following table, having summarized loop during the later stage is gathered the cycle stage.

Table

Gather the program setting (plasma collection procedure) of cycle period in the later stage to the blood processing loop

Stage	Remove blood plasma collection container	Return RBC	The purification of physiological saline	Finally return	Fluid communication	Termination routine
							V1					·	·
V2	·	。	·	·	·	·
							V3	·	·	·	·	·	·
V4	·	·	。	·	·	·
							V5	·	·	·	·	·	·
V6	·	·	·	·	·	·
							V7	·	。/ exchange with V23		/ exchange with V23
V8
							V9			。	·	·	·
V10	·	·	·	·	·	·
							V11	·	。/ pump into	/ pump into/pump	/ pump into	/ pump into
V12
							V13		/ pump		/ pump	/ pump
V14				·	·	·
							V15	·	·	·	·	·	·
V16	·	·	·	·	·	·
							V17	·	·	·	·	·	·
V18	·	·	·	。	。	·
							V19	·	·	·	·	·	·
V20	·	·	·	·	·	·
							V21	·	·	·	·	·	·
V22	·	。	。	。	。	·
							V23	·	。/ exchange with V6		。/ exchange with V7		·
PP1	■	■	■	■	■	■
							PP2	■	■	■	■	■	■
PP3	■	□	□	□	□
							PP4	■	■	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

G. the collection of red blood cell and blood plasma

During this program, carry out the whole blood of centrifugal treating, with the blood plasma of gathering about 550ml and the red blood cell that reaches about 250ml from a blood donors.This program is called as the capture program of red blood cell/blood plasma in shorthand.

During blood separation, make to cyclicity not to be that the red blood cell of preserving for collection partly returns blood donors.Last in this program, the red blood cell that surpasses the blood plasma of 550ml target and surpass the 250ml target also is returned blood donors.

The program setting in blood processing loop 46 (by the selectively acting of pressure to valve in the box and pumping plant) can use and carry out two red blood cell collections or the identical universal device 264 of plasma collection procedure.

Described program comprises a pre-collection circulation, and one gathers circulation, and a later stage gathers and circulates, and circulation is prepared in a storage.

Gather cycle period device 264 exhausting air before venipuncture pre-.Gathering cycle period, handling the whole blood that extracts from blood donors, simultaneously a part of red blood cell is being returned blood donors to gather blood plasma and red blood cell.Gather circulation in the later stage, excessive blood plasma and red blood cell are returned blood donors, and be full of described device with physiological saline.Prepare circulation in storage, a kind of red blood cell storing solution is added in the red blood cell of being gathered.

(1) the pre-collection circulated

A. the perfusion of anticoagulant

In the pre-collection circulation of red blood cell/plasma collection procedure, the program of setting case with carry out with two red blood cell capture programs in AC perfusion 1 and AC pour into identical AC of 2 stages pour into 1 and AC poured into for 2 stages.

B. the perfusion of physiological saline

Pretreatment circulation at red blood cell/plasma collection procedure, box is programmed with the perfusion 3 of the perfusion 2 of the perfusion 1 of carrying out physiological saline, physiological saline, physiological saline, emptying blood donors pipeline, and stage of venipuncture, and perfusion 3, the emptying blood donors pipeline of the perfusion 2 of the perfusion 1 of physiological saline, physiological saline, physiological saline in these stages and the two red blood cell capture programs, to reach stage of venipuncture identical.

In following table general description pre-gather the cycle stage during the program setting in loop.

Table

During pre-acquisition phase to the program setting (red blood cell/plasma collection procedure) in blood processing loop

Stage	AC perfusion	1	AC perfusion 2	Physiological saline perfusion 1	Physiological saline perfusion 2	Physiological saline perfusion 3	Emptying blood donors pipeline	Venipuncture
									V1
V2
								V3		。	·	·	·	。	·
V4	·	·	。	·	·	·	·
								V5	·	·	·	·	·	·	·
V6	·	·	·	·	。	·	·
								V7	·	·	·	·	。	·	·
V8	·	·	·	·	·	·	·
								V9	·	·	。/ pump	/ pump	/ pump into (stage 1).(stage 2)
V10					(stage 1)./ pump (stage 2)
								V11	/ pump		·	·	·	。/ pump into
V12					(stage 1)./ pump into (stage 2)
								V13	/ pump into		·	·	·	。/ pump
V14			/ pump into	/ pump into	/ pump (stage 1).(stage 2)
								V15		。/ pump into and pump					·
V16	·	·	·	·	·	·	·
								V17	·	·	·	·	·	·	·
V1 8	。	。	·	·	·	。	·
								V19	。	。	·	·	·	。	·
V20	。	。/ pump and pump into					·
								V21	·	·	·	·	·	·	·
V22	·	·	。	。	。	·	·
								V23	·	·	。	。	。
PP1	■	■			(stage 1)	■	■
								PP2	■	■	■	■	(stage 2)	■	■
PP3		■	■	■	■		■
								PP4	■		■	■	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

2. gather circulation

A. hemoperfusion

By venipuncture, open the conduit 300 that leads to fleams 268.The collection cycle programming loop of red blood cell/plasma collection procedure with carry out with two red blood cell capture programs of having described in hemoperfusion 1 hemoperfusion 1 and hemoperfusion 2 stages identical with 2 stages of hemoperfusion.

B. blood separation is taken out whole blood simultaneously or is not taken out whole blood

In the circulation of the blood collection of red blood cell/plasma collection procedure, the programming loop with two red blood cell capture programs are carried out blood separation and extract identical mode of whole blood stage simultaneously and take out the stage that whole blood carries out blood separation simultaneously.This structure is imported the process chamber that is used to separate with blood from container handling 312 simultaneously with in the anticoagulation suction container handling 312.This structure also moves into blood plasma container 304 with blood plasma from process chamber, simultaneously red blood cell is moved into red blood cell container 308 from container handling.This stage carries out being collected in (by the weighing transducer monitoring) in blood plasma and red blood cell collection container 304 and 308 until the blood plasma of required maximum flow and red blood cell always.

With identical in two red blood cell capture programs and plasma collection procedure, if before the blood plasma or red blood cell of gathering aim parameter, the volume of whole blood reaches predetermined greatest limit in the container handling 312, the loop of then programming stops blood donors interface pumping plant PP3 and (goes back cut-off valve V13 simultaneously to enter one, V11, V18 and V13) stage of operation, with the collection of whole blood in the termination container 312, still continue simultaneously blood separation.If the volume of whole blood reaches the predetermined least limit in the container handling 312 in the blood separation program, but before the blood plasma or red blood cell of gathering target volume, the programming loop is extracted to return blood separation and whole blood, thereby recharges container handling 312.The programming loop with according to the height amount limit in the container handling 312 in the blood separation circulation of extracting whole blood with do not take out between the blood separation circulation of whole blood and switch, gathered required maximum flow blood plasma and red blood cell up to.

C. return red blood cell and physiological saline

If also do not collect the blood plasma of aim parameter, and the red blood cell of gathering in the red blood cell collection container 308 surpasses predetermined greatest limit, and then the next stage of blood collection circulation (returning red blood cell under separation case) programming blood processing loop 46 is with operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13); Handle pump PP1 (promptly enter logical valve V9 and discharge logical valve V14); With blood plasma pump PP2 (promptly enter logical valve V12 and discharge logical valve V10).This structure continues anticoagulated whole blood is imported the process chamber that is used to separate from container handling 312, will extract blood plasma input blood plasma container 304 simultaneously and extract red blood cell input red blood cell container 308.All or part of red blood cell that this structure also will be captured in the red blood cell container 308 is delivered to blood donors.This structure also will be from physiological saline in the container 288 and the red blood cell that returns on-line mixing.This physiological saline and erythrocytic on-line mixing raise physiological saline temperature and improved the travelling comfort of blood donors.This physiological saline and erythrocytic on-line mixing have also reduced the erythrocytic haematocrit that is returned to blood donors, thereby allow the fleams of use than high range (promptly than minor diameter), with the travelling comfort of further raising blood donors.

Because weighing transducer detects, this stage can continue to carry out, till 308 emptyings of red blood cell container, thereby with plasma collection procedure under separation case to return the red blood cell stage corresponding.But treatment device should be determined to need to gather how many additional blood plasma to satisfy the aim parameter of blood plasma.Thus, treatment device is derived and the relevant red blood cell increment of plasma volume that increases.In this structure, the red blood cell that treatment device will part amount returns to blood donors, therefore, in case gathered the red blood cell of the next amount of passing, in the container 308 erythrocytic total amount will for or the red blood cell of a little higher than aim parameter.

If before the red blood cell of aequum returns, the volume of whole blood reaches a specific low threshold value in the container handling 312, then programme the loop and enter a stage (under not separation situation, returning red blood cell), operation with termination pumping plant PP1 (is gone back cut-off valve V9 simultaneously, V10, V12 and V14), to stop blood separation.Do not separate in this stage and the plasma collection procedure under the situation to return the red blood cell stage corresponding.

In case return the red blood cell of aequum from container 308, just programme the loop and enter a stage (filling the blood donors pipeline), so that operation blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), from container handling 312, to extract and to fill whole blood out blood donors pipe 266, take out the red blood cell (mixing) that the whole blood circulation is prepared with physiological saline thereby purify to another.

Then, the programming loop is to carry out another time blood system from the stage of taking out whole blood simultaneously, to recharge container handling 312.If desired, the loop can be carried out the continuous drawing whole blood and be returned red blood cell circulation, is presented at the red blood cell gathered in container 304 and 308 and plasma volume until weighing transducer and reaches or be a bit larger tham desired value.Begin later stage collection circulation then.

Following table has been summarized at the program setting of gathering the cycle stage loop.

Table

Program setting (red blood cell/plasma collection procedure) in the blood processing loop of gathering cycle period

Stage	Hemoperfusion	1	Hemoperfusion 2	Blood separation extracts whole blood (not extracting whole blood) simultaneously	At the red blood cell/physiological saline that returns that separates under (not separating) situation	Fill the blood donors pipeline
							V1
V2	·	·	。	。	·
						V3	。	·	。(·)	·	·
V4	·	·	·	·	·
						V5	·	·	。	。(·)	·
V6	·	·	·	·	·
						V7	·	。	·	。/ exchange with V23
V8	·	·	·	·	·
						V9	·	。/ pump into	/ pump into	/ pump into ()
V10			/ pump	/ pump ()
						V11	/ pump		。/ pump ()	/ pump into	/ pump into
V12			/ pump into	/ pump into ()
						V13	/ pump into		。/ pump into ()	/ pump	/ pump
V14		/ pump	/ pump	/ pump ()
						V15	/ pump		/ pump ()
V16
						V17
V18		。	。(·)	。	。
						V19	。	·	。(·)	·	·
V20	。/ pump		/ pump into ()
						V21
V22					·
						V23	·	·	·	。/ exchange with V7
PP1	■			(■)	■
						PP2	■	■		(■)	■
PP3		■	(■)
						PP4		■	(■)	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

D. the later stage is gathered circulation

In case gathered the blood plasma and the red blood cell (by the weighing transducer monitoring) of target maximum flow, the cycle stage is gathered to carry out the later stage in the programming loop.

I. reclaim excessive blood plasma

If the plasma volume of gathering in blood plasma collection container 304 surpasses aim parameter, then enter the collection cycle stage (excessive blood plasma recovery) in a later stage, the loop programme during this period to stop blood for making container handling and removing blood from container handling, handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) simultaneously, the blood plasma in the blood plasma container 304 is carried the system blood donors.Also programme the loop so that from the physiological saline of container 288 and the blood plasma on-line mixing of returning in this stage.Detect by weighing transducer, the plasma volume that this stage continues to carry out in blood plasma collection container 304 reaches desired value.

Ii. return excessive red blood cell

If the red blood cell amount of gathering in red blood cell collection container 308 also surpasses aim parameter, then enter the collection cycle stage (excessive red blood cell returns) in a later stage, the loop programme during this period to handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that the red blood cell that will remain in the red blood cell container 308 flows to blood donors.Also programme the loop so that from the physiological saline of container 288 and the red blood cell on-line mixing of returning in this stage.According to the monitoring of weighing transducer, the red blood cell amount that this stage will continue to carry out in container 308 equals desired value.

Iii. the purification of physiological saline

When the red blood cell of gathering in container 308 and 304 and plasma volume equal desired value, enter later stage collection circuit next stage (purification of physiological saline), during this period, the programming loop is to handle blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13), so that pass through segregating unit from the physiological saline of container 288, thereby the blood constitutent in the segregating unit is exchanged into container handling 312, so that get ready for returning to blood donors.This stage has been reduced the loss of blood donors blood.According to the monitoring of weighing transducer, the physiological saline that this stage will continue to carry out until prearranging quatity is pumped through segregating unit.

Iv. finally be back to blood donors

Gather circuit next stage (finally returning) in the later stage, blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) is handled in the programming loop, so that the blood constitutent in the container handling 312 is flowed to blood donors.Physiological saline mixes with blood constitutent discontinuously.According to the monitoring of weighing transducer, this stage continues and continues to carry out until container handling 3 12 emptyings.

In next stage (fluid communication), blood donors interface pumping plant PP3 (promptly enter logical valve V11 and discharge logical valve V13) is handled in the programming loop, so that physiological saline is delivered to blood donors.According to the monitoring of weighing transducer, this stage will continue to carry out until the exchange volume flow rate that injects regulation.

In next stage (end venipuncture), the programming loop is to close all valves and to stop the work of all pumping plants, so that finish venipuncture.

Following table has been summarized the continuous design of loop program during the later stage is gathered the cycle stage.

Table

Gather the programming (red blood cell/plasma collection procedure) in cycle period blood processing loop in the later stage

Stage	Excessive blood plasma returns	Excessive RBC returns	The purification of physiological saline	Finally return	Fluid communication	Finish venipuncture
							V1					·	·
V2	·	。	·	·	·	·
							V3	·	·	·	·	·	·
V4	·	·	。	·	·	·
							V5	。	·	·	·	·	·
V6	。/ exchange with V23
							V7		/ exchange with V23		/ exchange with V23
V8
							V9		。	。	·	·	·
V10	·	·	·	·	·	·
							V11	。/ pump into	/ pump into	/ pump into/pump	/ pump into	/ pump into
V12
							V13		/ pump		/ pump	/ pump
V14				·	·	·
							V15	·	·	·	·	·	·
V16	·	·	·	·	·	·
							V17	·	·	·	·	·	·
V18	。		·	。	。	·
							V19	·	·	·	·	·	·
V20	·	·	·	·	·	·
							V21	·	·	·	·	·	·
V22	。	。	。	。	。	·
							V23	。/ exchange with V6	/ exchange with V6		。/ exchange with V7		·
PP1	■	■	■	■	■	■
							PP2	■	■	■	■	■	■
PP3	□	□	□	□	□	■
							PP4	■	■	■	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

E. store and prepare circulation

The perfusion of i.RBC preservative

Storing the preparation circuit phase I (perfusion preserving solution), blood donors interface pumping plant PP3 is handled from container 280 the red blood cell preserving solution of aequum is imported container handling 312 in the programming loop.The transfer of aequum is monitored by platform scale.

At next stage (conveying preserving solution), the programming loop is handled blood donors interface pumping plant PP3 volume required red blood cell preserving solution is imported red blood cell collection container 308 from container handling 312 containers.Volume required conveying is monitored by platform scale.

Terminal stage below (termination routine), the programming loop is to close all valves and to stop the work of all pumping plants, so that blood plasma and red blood cell reservoir vessel 304 and 308 can be separated and remove so that store.At this moment, can extract and the remaining part of discarded disposable apparatus.

Following table has been summarized the loop programming of preparing cycle period storing.

Table

Gather the programming (red blood cell/plasma collection procedure) in cycle period blood processing loop in the later stage

Stage	The perfusion preserving solution	Carry preserving solution	The end process program
				V1
V2			·
				V3	。	·	·
V4	·	。	·
				V5	·	·	·
V6	·	·	·
				V7	·	·	·
V8	·	·	·
				V9	·	·	·
V10	·	·	·
				V11	。/ pump into/pump	/ pump into/pump
V12
				V13
V14
				V15
V16		。	·
				V17	·	·	·
V18	·	·	·
				V19	·	·	·
V20	·	·	·
				V21	。	。	·
V22	·	·	·
				V23	·	·	·
PP1	■	■	■
				PP2	■	■	■
PP3	□	□	■
				PP4	■	■	■

Illustrate:.Represent an open valve; Expression one valve of closing;/ be illustrated in the valve of opening and closing during the pumping program; ■ represents an idle pumping plant (not using); And represents in use a pumping plant.

V. interface control

A. do not overflow detection with overflow

In above-mentioned any program, the centrifugal force that is present in process chamber 18 fills separation of whole blood to a red blood cell zone and a blood plasma zone (seeing Figure 15 A).Centrifugal force makes filling red blood cell zone assemble along the chamber outside or height-G wall, simultaneously the blood plasma district is delivered to the inboard or the low-G wall place of chamber.

A zone line has formed the interface between red blood cell zone and blood plasma zone.The cellular blood material of middle density, for example blood platelet and white blood cell accumulate at the interface, and according to density profile, and blood platelet is than the more close plasma layer of white blood cell.Compare with the faint yellow and erythrocytic redness in blood plasma district, because its muddy color, this interface is also referred to as " buffy coat " thus.

Preferably monitor the position of buffy coat so that or depend on described program, prevent that the buffy coat material from entering blood plasma or red blood cell, or gather the cellular component of this buffy coat.For this purpose, described system comprises a check station 332, and this check station comprises two optical sensors 334 and 336.

Shown in and preferred embodiment in (seeing Figure 13), check station 332 is positioned at closer distance place, 20 outside, centrifugal station.Before by check station 332 monitorings, this structure makes the amount of liquid minimum of output chamber.

Stand the blood constitutent of first sensor 334 optical monitorings by sampled plasma pipeline 292 in 332.Second sensor, 336 optical monitorings in 332 of standing are gathered pipeline 294 by red blood cell blood constitutent.

Pipe 292 and 294 is made by plastic materials (for example PVC), and wherein said material is only transparent for what be used to survey, is in pipe 292 and 294 zones relevant with check station 332 at least.

In the embodiment shown, device 264 comprises a fixed block 338 (seeing Figure 16 to 18), in order to will manage 292 and 294 and sensor 334 and 336 secured in alignment accordingly.Fixed block 338 will be managed 292 and 294 with a kind of orderly arrangement side by side of compactness and be flocked together compactly, with as the integral body setting that is associated with sensor 334 and 336 and move, described sensor also is arranged in the station 332 with a kind of compactness, side by side relation.

In the embodiment shown, even without relevant sensor is set, fixed block 338 is also being fixed and is being managed 290, and this pipe is used for whole blood is imported centrifugal station 20.Fixed block 338 is used for assembling and fixes all pipes 290,292 and 294, and they are with a branch of umbilical region and cable 296 of being connected to of compactness and portable.

Fixed block 338 can be and umbilical region 296 integrated elements, for example pass through overmolded.Perhaps, fixed block 338 can be an element of making separately, and its snapping is installed in around the pipe 290,292 and 294.

(as shown in Figure 2) in the embodiment shown, the container 304,308 and 312 that is connected on the box 28 is suspended in service routine on the centrifugal station 20.In this set, fixed block 338 is adjacent to after umbilical region 296 ends crooked turnings of 90 degree by one and will manages 290,292 and 294 and lead box 28.The turning of being used by fixed block 338 guides the pipe 290,292 and 294 of series connection to leave the zone that tightly is positioned at container 304,308 and 312 belows, thereby prevents to huddle in this zone.Fixed block 33 8 supports and guide tube 290,292 and 294 by turning, and the danger that can reduce knotting or tangle.

First sensor 334 can detect the existence of the cellular material or the composition of optical target in the sampled plasma pipeline 292.Variation with program changes as the composition of optically detecting target.

For a plasma collection procedure, first sensor 334 detects hematoblastic existence in the sampled plasma pipeline 292, so control gear can be activated so that the interface between blood plasma and the platelet cell layer is moved back in the process chamber.This provides a kind of do not have substantially blood platelet or the minimum blood plasma product of blood platelet at least wherein.

Only gather erythrocytic capture program for one, the interface that first sensor 334 detects between buffy coats and the layer of red blood cells, so control gear can activated, so that the interface is moved back in the process chamber.This can make erythrocytic output maximum.

For a buffy coat capture program (following will the description), the forward position (being blood plasma/blood platelet interface) that first sensor 334 detects buffy coats begins time of coming out from process chamber, and the back edge of buffy coat (being buffy coat/red blood cell interface) is from time that process chamber comes out completely.

Existence as these components in, the blood plasma 334 detected by first sensor represents that the interface is enough near from the low-G wall of process chamber, thus allow in these components all or some be brought into sampled plasma pipeline (seeing Figure 15 B).This situation will be known as " excessive overflowing ".

Second sensor 336 can detect red blood cell and gather erythrocytic haematocrit in the pipeline 294.In processor, if being reduced to, haematocrit is lower than predetermined minimum value, represent that so the interface is enough near from the height-G wall of process chamber, thereby allow that blood plasma enters red blood cell and gathers pipeline 294 (seeing Figure 15 C).This situation will be " deficiency is overflowed " by journey.

B. sensing loop

Sensing station 332 comprises a sensing loop 340 (seeing Figure 19), and the first sensor 334 and second sensor 336 form the part in this loop.

First sensor 334 comprises 350, one red LED352 of diode (LED) and two photodiodes 354 and 355 of a green light.Photodiode 354 is measured transmission light, and photodiode 355 is measured reflected light.

Second sensor 336 comprises a red LED356 and two photodiodes 358 and 360.Photodiode 358 is measured transmission light, and photodiode 360 is measured reflected light.

Sensing loop 340 also comprises a LED driving element 342.Driving element 342 comprises a DC electrical source 344, and this power supply and sensor 334 are connected with 356 with 336 LED350,352.DC electrical source 344 provides a steady current with temperature and independent of power voltage for each LED350,352 and 356.Therefore DC electrical source 344 provides a constant output current intensity for each LED350,352 and 356.

LED driving element 342 comprises a modulator 346.Modulator 346 is adjusted in steady current on the frequency of a regulation.Modulator 346 eliminates the influence of environment lighting and electromagnetic interference (EMI) from the reading of optics sensing, and this will be explained in more detail below.

Sensing loop 340 also comprises a receiving loop 348 that is connected to photodiode 354,355,358 and 360.For each photodiode 354,355,358 and 360, receiving loop 348 comprises a special-purpose current-voltage (I-V) transducer 362.The remaining part of receiving loop 348 comprises a band-pass filter 364, a programmable amplifier 366, and a full wave rectifier 368.These elements 364,366 and 368 for example use a multiplexer and are shared.

Environment lighting generally includes the frequency content that is less than 1000Hz, and EMI generally includes the frequency content that is higher than 2Khz.In view of the above, modulator 346 is adjusted in electric current under the frequency that is lower than the EMI frequency content, for example about 2Khz.Sensing loop 340 will be eliminated above and below the frequency content of external light source and EMI composition according to the measured value of sensing.Therefore, sensing loop 340 is insensitive for extraneous illumination condition and EMI.

In more detail, incide on photodiode 354 and 355 (for pipe 292) or photodiode 358 and 360 (for pipe 294) from the pipe 292 that contains liquid or the light of 294 transmissions or reflection measured.Each photodiode produces one and the proportional photoelectric current of reception light intensity.This electric current is converted into a voltage.This voltage is supplied with bandpass filters 364 by multiplexer 370.Bandpass filters 364 has a CF center frequency (being described embodiment's 2Khz) that is arranged in the carrier frequency of modulation back light.

The sine output of bandpass filters 364 is sent to variable gain amplifier 366.Amplifier Gain is organized in the step of building in advance in advance, for example X1, X10, X100 and X1000.This provides the ability that responds with big dynamic range to amplifier.

The sine output of amplifier 366 is sent to full wave rectifier 368, and it should sine output be converted into a proportional DC output voltage of the energy with transmission light.

Controller 16 produces the commutator pulse that is used for sensing loop 340.For each LED, this commutator pulse comprises that (i) has a modulated square wave of required modulation frequency (being the 2Khz among the described embodiment), (ii) actuating signal, (iii) two sensors are selected position (they select the output of sensor to supply with bandpass filters 364), (iv) two positions that are used for receiving loop income section (for amplifier 366).

Controller 16 is regulated and is driven loop 342, so that each LED is in ON state or OFF state.

At the ON state, the LED startup is made as " height ", and makes the bright certain time interval of LED, for example 100ms.During the initial 83.3ms of ON state, for the photodiode and the receiving loop 348 of incident, limited time increase be allow to make it stable.During the last 16.7ms of ON state, Sampling is carried out in the output in loop 340 with the modulation rate (being the 4Khz among the described embodiment) of twice.Sampling is chosen as the complete cycle that comprises a 60Hz at interval, thereby allows that main frequency filters out from measurement result.The Sampling frequency of 4Khz allows that the pulsation of 2Khz is captured so that carry out filtering from measurement result later on.

At the OFF state, make LED close 100ms.In last 16.7ms, note the LED baseline that causes by environment lighting and electromagnetic interference.

1. first sensor; Blood platelet/RBC difference

Not celliferous blood plasma is flaxen.When hematoblastic concentration increased in the blood plasma, the clearness of blood plasma reduced.Blood plasma seems " muddiness ".When erythrocytic concentration increased in the blood plasma, the color of blood plasma was by the faint yellow redness that becomes.

Sensing loop 340 comprises a detection/difference module 372, and it is analyzed by the decay of light under two different wave lengths of first sensor 334 sensings (using incident light sensor light electric diode 354).Select different wavelength having hematoblastic relatively essentially identical optical attenuation, but red blood cell have the very optical attenuation of big difference relatively.

In the embodiment shown, first sensor 334 comprises the transmitter 350 of one first wavelength (λ 1) light, is green glow (570nm and 571nm) in described embodiment.First sensor 334 comprises the transmitter 352 of one second wavelength (λ 2) light, is ruddiness (645nm and 660nm) in described embodiment.

Blood platelet optical attenuation (ε under first wavelength ^{λ 1} _{Blood platelet}) and the blood platelet optical attenuation (ε under second wavelength ^{λ 2} _{Blood platelet}) basic identical.Therefore, the attenuation change behind the certain hour will be identical, and described variation is by the increase or the minimizing influence of PC.

But, the hemoglobin optical attenuation (ε under first wavelength _Hb ^{λ 1}) be about the hemoglobin optical attenuation (ε under second wavelength _Hb ^{λ 2}) ten times.Therefore, so along with the attenuation change of time is inequality owing to being subjected to by erythrocytic existence influence meeting.

Pipe 294 is only transparent for first wavelength and second wavelength, by this pipe sensing blood plasma.Pipe 294 makes plasma flow cross first and second transmitters 350 and 352.

Photodetector 354 receives by first and second transmitters 350 and 352 light of being launched by managing 294.Photodetector 354 produces and receives the proportional signal of light intensity.Described intensity changes with the optical attenuation that is caused by blood platelet and/or erythrocytic existence.

Module 372 is connected to photodetector 354, is used for analytic signal to obtain first and second wavelength reception light intensity.Module 372 compares the Strength Changes of first and second wavelength light behind the certain hour.When the first and second wavelength light intensities changed in essentially identical mode along with the time, module 372 produced one and represents the output value that blood platelet exists in the plasma flow.When the first and second wavelength light intensities changed in different substantially modes along with the time, module 372 produced one and represents the output value that red blood cell exists in the plasma flow.Therefore variant between output value Strength Changes that PC changes in based on plasma flow and the Strength Changes based on red blood cell change in concentration in the plasma flow.

Implement module 372 many methods are arranged.In a preferred embodiment, detection/difference module 372 thinks that the wavelength that is caused by plasma solutions is that the decay of the homogeneous beam of λ can be described below by the Lambert-Beer method of revising:

Wherein

I is a transmitted intensity.

I _OBe incident light strength.

ε _Hb ^λOptical attenuation (gm/dl) for the hemoglobin under the setted wavelength (HB).

ε ^λ _{Blood platelet}Be the hematoblastic optical attenuation under the setted wavelength.

C _HbBeing the concentration of hemoglobin in the red blood cell, is 34 gm/dl.

C _{Blood platelet}Be the PC in the sampling.

D is the thickness by the plasma flow of pipe 294.

G ^λBe the passage length factor under the setted wavelength, this factor has been explained the unnecessary photon passage in the blood plasma sampling that is caused by light scattering.

H is the whole blood haematocrit, and it is the red blood cell percentage in the sampling.

G _RBC ^λAnd G ^λ _{Blood platelet}Be respectively at the wavelength that is applied and measure red blood cell under the geometrical shape and the function of hematoblastic concentration and scattering coefficient.

For the wavelength of visible and near infrared spectrum, ε ^λ _{Blood platelet}=0, therefore:

Under a kind of excessive overflow condition (shown in Figure 15 B), first cellular component that is detected by the first sensor in the sampled plasma pipeline road 294 334 will be blood platelet.Therefore, for hematoblastic detection, Ln (T ^λ) ≈ G ^λ _{Blood platelet}

In order to detect the buffy coat interface between platelet layer and the layer of red blood cells, based on two wavelength (λ of following Standard Selection ₁And λ ₂), i.e. (i) λ ₁And λ ₂Substantially has the identical passage length factor (G ^λ), (ii) wavelength X ₁Or λ ₂Have the hemoglobin optical attenuator more much bigger than other wavelength.

Suppose wavelength X ₁And λ ₂Has identical G ^λ, formula (2) can be reduced to:

$\mathrm{Ln}\left(T^{{\mathrm{\λ}}_1}\right)-\mathrm{Ln}\left(T^{{\mathrm{\λ}}_2}\right)\≈{\mathrm{Hdc}}_{\mathrm{Hb}}({\mathrm{\ϵ}}_{\mathrm{Hb}}^{{\mathrm{\λ}}_2}-{\mathrm{\ϵ}}_{\mathrm{Hb}}^{{\mathrm{\λ}}_1})---\left(3\right)$

In a preferred embodiment, λ ₁=660nm (green), λ ₂=571nm (red).The passage length factor (the G of 571nm light _λ) big than 660nm light.Therefore the passage length factor must be revised by factor alpha and β:

${G^{{\mathrm{\λ}}_1}}_{\mathrm{RBC}}=\mathrm{\α}{G^{{\mathrm{\λ}}_2}}_{\mathrm{RBC}}$

Therefore, formula (3) can be expressed as:

Do not having under the erythrocytic situation,, representing as formula (5) because the PC that increases detects so formula (3) causes the red blood cell of one vacation:

For the detection at interface between blood platelet and the blood platelet/layer of red blood cells, formula (4) provides a better solution.Therefore module 372 has been used formula (4).For ready different concentration known of supporting by the arm blood plasma in the hematoblastic blood plasma, coefficient (β-1) can be by measuring the G in the required measurement geometrical shape with experience ^{λ 1} _{Blood platelet}And G ^{λ 2} _{Blood platelet}Decision.

Detection/difference module 372 is also distinguished out the difference between the Strength Changes, and this difference is that the free hemoglobin that exists in the blood plasma that causes by the red blood cell that exists in the blood plasma or by haemolysis causes.Either way can cause the reduction of the output value of transmission light sensor light electric diode 354.But the output value of reflected light sensor light electric diode 355 increases under the situation that red blood cell exists, and reduces under the situation that free hemoglobin exists.Therefore detection/difference module 372 senses the appearance of undesirable haemolysis situation in the blood processing program, therefore can remind operator and can take the correction behavior.

2. second sensor: pile up erythrocytic measurement

In a kind of excessive situation of overflowing (shown in Figure 15 C), because blood plasma (and buffy coat) mixes with red blood cell, so the erythrocytic haematocrit of discharging from process chamber 18 will sharply descend, the haematocrit from about one about 80 the target haematocrit to 50 for example.Wish that in plasma collection procedure a kind of deficiency overflows situation, because this situation allows that red blood cell and buffy coat return to blood donors.In only gathering erythrocytic program, do not wish that then a kind of deficiency occurring overflows situation, because erythrocytic output and quality that this situation entail dangers to is gathered for storage.

In any situation, sense when there is the ability that deficiency is overflowed be desirable.

Photon wavelength in the near infrared spectrum (NIR) (being about 540nm to 1000nm) is suitable for the sensing red blood cell, because their intensity can be measured after passing many millimeter blood.

Sensing loop 340 comprises a red blood cell testing module 374.Testing module 374 is analyzed the light transmission of 336 sensings of second sensor, with the erythrocytic haematocrit variation of differentiating haematocrit and discharging process chamber 18.

Testing module 374 thinks that the wavelength that is caused by blood is that the decay of the homogeneous beam of λ can be described below by the Lambert-Beer rule of revising:

$I=I_O{e}^{-[({\mathrm{\ϵ}}_{\mathrm{Hb}}^{\mathrm{\λ}}{c}_{\mathrm{Hb}}H)d+G_{\mathrm{RBC}}^{\mathrm{\λ}}]}---\left(6\right)$

Wherein:

I is a transmitted intensity.

I _OBe incident light strength.

ε _Hb ^λOptical attenuation (gm/dl) for the hemoglobin under the setted wavelength (HB).

C _HbConcentration for hemoglobin in the red blood cell is decided to be 34gm/dl.

D is the distance between light source and the photodetector.

G ^λBe the passage length factor under the setted wavelength, this factor has been explained the unnecessary photon passage in the blood plasma sampling that is caused by light scattering.

H is the whole blood haematocrit, and it is the red blood cell percentage in the sampling.

G _RBC ^λThe erythrocytic haematocrit under wavelength that is provided and measurement geometrical shape and the function of scattering coefficient are provided.

Known formula (6), then Cai Yang optical density O.D. can represent with following formula:

$\mathrm{Ln}\left(\frac{I^{\mathrm{\&lambda;}}}{{\mathrm{<figure-callout\; id="0"\; label="l"\; filenames="C0080186601321.png,C0080186601421.png"\; state="\{\{state\}\}">l</figure-callout>}}_0^{\mathrm{\&lambda;}}}\right)=O.D.\&ap;-[\left({\mathrm{\&epsiv;}}_{\mathrm{Hb}}^{\mathrm{\&lambda;}}{C}_{\mathrm{Hb}}H\right)d+G_{\mathrm{RBC}}^{\mathrm{\&lambda;}}]---\left(7\right)$

The optical density O.D. of sampling can also be expressed as:

O.D.=O.D. _Absorb+ O.D. _Diffusion(8)

Wherein, O.D. _AbsorbFor by the caused optical density of red blood cell absorption, be expressed as follows:

O.D. _ScatteringFor by the caused optical density of red blood cell scattering process, be expressed as follows:

From formula (9), find out O.D. _AbsorbIncrease with haematocrit (H) is linear.For the measurement of the transmissivity in red and the NTR spectrum, G _RBC ^λSubstantially be parabolic, between 50 and 75 haematocrit, reach maximum (depend on illumination wavelength and measure geometrical shape), be 0 (for example at 0 and 100 haematocrit place, " dispersion model of whole blood optical absorption " shown referring to Steinke etc., J.Opt.Soc.Am., Vol 5, No.6, in June, 1988).Therefore, for light transmissive measurement, measured optical density is the nonlinear function of haematocrit.

But, have been found that the catoptrical G that measures from incident light source predetermined radial distance place _RBC ^λIn 10 to 90 haematocrit scope is linear.Therefore, for second sensor 336 of structure like this, testing module can be with sampling with respect to the linear function of catoptrical optical density as haematocrit.

This structure depends on and keeps the simple geometrical shape of measuring.Do not need reflector or focusing lens.LED or photodiode do not need to be provided with to such an extent that become specific angle with blood tube.Do not need specific optics battery.Second sensor 336 can be directly docks with transparent 294 of plastic tubes.Equally, first sensor 334 can be directly and transparent tube 292 interfaces.

In an illustrated embodiment, select the wavelength of 805nm, because this wavelength is absorption wavelength such as a kind of for red blood cell, this just means that erythrocytic optical absorption has nothing to do with oxygen saturation under this wavelength condition.Can also in NIR spectrum, select other wavelength.

In the embodiment shown, for the wavelength of 805nm, preferred setpoint distance is from light source 7.5mm.Above-mentioned fixed block 338 (seeing Figure 18) is convenient to manage the 294 reflected light detector settings with the relative light source of the relation that requires and second sensor 336.Fixed block 338 also is convenient to manage the 292 reflected light detector settings with relative light source of desired relation and first sensor 334.

Also be fine in distance mensuration, and the variation of red blood cell specific volume is demonstrated higher sensitivity greater than 7.5mm.But can run into a lower signal than distant location for the noise ratio at these.Equally, measuring will show relative noise ratio one from the nearer distance of light source than large-signal, still lower to the sensitivity of the variation of erythrocytic haematocrit.Optimum distance for a setted wavelength can be determined by experience, wherein for a given haematocrit scope, has a linear relationship between the intensity of haematocrit and sensing.

Second sensor 336 detects transmission and passes the absolute difference of gathering the average strength of the main transmission light of erythrocytic signal in the pipeline line by red blood cell.The intensity absolute difference that the testing module analysis records, and the increase of the standard deviation of measured intensity are to provide a not enough spill over reliably, as shown in figure 20.

Under a given absolute haematocrit, to different blood donors, G _RBC ^λSlightly different, this variation by mean corpuscular volume between blood plasma and the red blood cell and/or refractive index difference causes.In addition, by measuring from the light of the blood sampling reflection of given blood donors with a known haematocrit, thereby for this blood donors, G _RBC ^λCan be demarcated to produce the absolute measured value of an erythrocytic haematocrit of from process chamber, coming out.

C. the pretreatment of sensor is demarcated

Physiological saline in a given blood collection program and during the hemoperfusion stage first and second sensors 334 and 336 being demarcated, its details is described.

In physiological saline perfusion phase program, physiological saline is transported in the blood processing chamber 18 and by sampled plasma pipeline 292.During this period, blood processing chamber 18 is cycle rotation between 0 RPM and 180 RPM, is removed from chamber 18 up to air.Rotational velocity with process chamber 18 is increased to TAS true airspeed for the national games then.

And then be the hemoperfusion stage, during whole blood with desired whole blood flow velocity (Q _WB) be introduced into process chamber 18.The blood plasma that comes out from process chamber 18 is set to desired flow velocity (Q through the flow velocity of sampled plasma pipeline line 292 _p) a part (for example 80%), from process chamber 18, to remove physiological saline.Continue the discharge of physiological saline under these conditions, sense the existence of physiological saline in the sampled plasma pipeline line 292 optically up to first sensor 334.

1. for plasma collection procedure (inducing deficiency to overflow)

If the programmed acquisition blood plasma that will carry out will induce the situation that a kind of deficiency is overflowed so in order to storing (for example, plasma collection procedure or red blood cell/plasma collection procedure) in calibrating procedure.Can produce the situation that deficiency is overflowed by reducing or stopping the flow of blood plasma by sampled plasma pipeline 292.This makes the low-G side (as Figure 15 C) of buffy coat away from chamber 18, is present in the sampled plasma pipeline 292 with the plasma flow of guaranteeing " totally ", and does not have or do not have substantially blood platelet and white blood cell.In the basic lipid levels of considering blood donors, but do not have under the situation of blood platelet or leukocytic existence, this deficiency that induces is overflowed and is allowed that first sensor 334 is demarcated and proofreaied and correct with respect to the physiology color of blood donors blood plasma.Therefore first sensor 334 has blood platelet in the buffy coat or the leukocytic peak response that has caused variation, and then the meeting appearance is a kind of in processor excessively overflows.

Begin in blood processing, force a kind of deficiency situation of overflowing to occur also making the interface near height-G wall.This height in described chamber-G side produces a kind of initial bias situation, to have delayed the final progress of the situation of excessively overflowing when blood processing is carried out.

2. red blood cell capture program

If carry out a program that does not have blood plasma to be gathered (for example two units red blood cell capture program), just can not induce a kind of deficiency in the blood purification step overflows situation.This be because, in only gathering erythrocytic program, during excessively overflowing, 334 of first sensors need to detect erythrocytic existence in the blood plasma.First sensor 334 does not need further to be activated to detect blood platelet.And, in only gathering erythrocytic program, require the as close as possible low-G wall in interface.Desired situation allows that buffy coat and blood plasma return the exporter together, and makes the erythrocytic haematocrit maximum of collection.

D. blood cell collection

1. plasma collection procedure

In the program of gathering blood plasma (for example plasma collection procedure or red blood cell/plasma collection procedure), Q _PBe set to Q _{P (theory)}, it is the plasma flow rate that experience is determined, it allows that system keeps a kind of stable acquisition state, does not promptly have deficiency to overflow and excessively do not overflow.

Q _{P (theory)}(g/ml) be anticoagulated whole blood inlet flow velocity Q _WB, anticoagulated whole blood inlet haematocrit HCT _WBAnd red blood cell is discharged haematocrit HCT _RBCThe function of (by estimation or measurement) is expressed as follows:

Wherein:

ρ _{Blood plasma}Be the density (g/ml)=1.03 of blood plasma

ρ _WBBe the density (g/ml)=1.05 of whole blood

ρ _RBCBe erythrocytic density=1.08

For sampled plasma, Q _WBBe set to desired whole blood inlet flow velocity, this flow velocity is about 70ml/ minute for the program of only gathering blood plasma.For a kind of red blood cell/plasma collection procedure, Q _WBBe set at about 50ml/ minute, thereby the red blood cell of accumulation is provided, it has than haematocrit high in traditional plasma collection procedure.

The setting that SC system controller 16 keeps pump up to reaching desired sampled plasma volume, is overflowed situation or a kind of situation of excessively overflowing unless detect a kind of deficiency.

If for the blood separation situation of reality, the Q of setting _PToo high, if perhaps because the physiological reason of blood donors, big (i.e. " thicker ") of the volume ratio expection of buffy coat, first sensor 334 will detect blood platelet or white blood cell or both existence in the blood plasma so, show a kind of situation of excessively overflowing.

With high Q _PCaused a kind of situation response of excessively overflowing, SC system controller 16 stops the operation of sampled plasma pump PP2, keeps the Q that sets simultaneously _WBConstant.With the caused a kind of situation response of excessively overflowing of high volume buffy coat, SC system controller 16 stops the operation of sampled plasma pump PP2, detects a kind of deficiency up to red blood cell sensor 336 and overflows situation.This makes buffy coat discharge from the separation chamber by red blood cell pipe 294.

Excessively overflow response in order to carry out, blood processing loop 46 is designed to start to handle pump PP1 (promptly suck by valve V9, discharge by valve V14), with the Q of whole blood to set _WBBe extracted into process chamber 18 from container handling 312.Red blood cell is discharged from chamber 18 by the collection pipeline 294 in the collection container 308.The red blood cell flow velocity directly depends on Q _WBSize.

During this period, blood processing loop 46 also is designed to stop the operation scheduled time (for example 20 seconds) of blood plasma pump PP2.This makes the interface move back middle part to the separation chamber.After the preset time section, continue to make blood plasma pump PP2 running, but move the time (for example 10 seconds) of one section weak point with a low flow velocity (for example 10ml/ minute).Be corrected if overflow, clean blood plasma will detect by first sensor 334, and continue the proper functioning in blood processing loop 46.If do not sense clean blood plasma, show excessively to overflow also not to be corrected that said procedure is repeated in blood processing loop 46.

Summed up the circuit design procedure that alleviates the situation of excessively overflowing in the following table.

Table

Be used for alleviating the design (plasma collection procedure) in the blood processing loop of excessively overflowing situation

V1	·
		V2	。
V3	·
		V4	·
V5	。
		V6	·
V7	·
		V8	·
V9	。/ pump into
		V10
V11
		V12
V13
		V14	/ pump
V15
		V16
V17
		V18
V19
		V20
V21
		V22
V23
		PP1
PP2	■
		PP3	■
PP4	■

Illustrate:.The expression open valve; The valve that expression is closed;/ be illustrated in the valve of opening and closing during the pumping program; The pumping plant that ■ represents to leave unused (using); And represents pumping plant in use.

In case the excessive situation of overflowing is proofreaied and correct, controller 16 just makes blood processing loop 46 recover normal blood processing, but gives Q _PApply one and reduce percentage coefficient (%RF), this Q _PBe when the situation of excessively overflowing is just detected, to set.Reduce coefficient (%RF) and be a function in the time lag between excessively overflowing, promptly when the frequency of excessively overflowing increased, %RF increased, and vice versa.

If the Q that sets _PToo low, second sensor will detect the red blood cell haematocrit and be reduced under the predetermined value, and it shows that a kind of deficiency overflows situation.

Overflow the situation response with a kind of deficiency, SC system controller 16 is with Q _PReset, make it near the Q that sets _WBWhen handling continuation, the interface will be moved back gradually to the low-G wall.Controller 16 keeps these to set, and detects red blood cell hematocrit up to second sensor 336 and is higher than required setting value.At this moment, controller 16 applies an increase percentage coefficient (%EF), this Q to QP _PBe to set in just detected in the deficiency situation of overflowing.Enhancement coefficient (%EF) is a function in the time lag between deficiency is overflowed, and promptly when not enough frequency of overflowing increased, %EF increased.

If repeatedly attempting (for example three times) afterwards, controller 16 can't be proofreaied and correct a given deficiency or excessively overflow situation, will give the alarm.

2. only gather erythrocytic program

Do not gather only gathering red blood cell (for example two units red blood cell capture program) in the program of blood plasma, set Q _PBe no more than Q _{P (theory)}, and Q _WBe set to the whole blood inlet flow velocity of process chamber 18, for two units red blood cell capture program, it is about 50ml/ minute.

In two units red blood cell capture program, may wish frequently to occur excessive overflowing.This makes the erythrocytic haematocrit maximum of collection, and the buffy coat that will have blood plasma returns to blood donors.If excessive appearance of overflowing is lower than the frequency of setting, Q after a period of time _PWill increase.Similarly, if excessive appearance of overflowing is higher than the frequency of setting, Q after a period of time _PWill reduce.But, for fear of a kind of undesirable high haematocrit, can be just at Q _{P (theory)}Work under the condition.

SC system controller 16 control pump settings by this way are up to reaching desired red blood cell acquired volume, the appearance that while hypoprosexia is overflowed or excessively overflowed.

First sensor 334 detects by erythrocytic existence in the blood plasma and excessively overflows.Respond with excessively overflowing situation, SC system controller 16 stops the operation of blood plasma from the sampled plasma pump of process chamber extraction kept the Q that sets simultaneously _WBConstant.

Excessively overflow response in order to carry out, blood processing loop 46 also be designed to with aforementioned table in identical mode operate blood plasma pump PP2 and handle pump PP1 (by selected valve pressure and pumping plant pressure).Therefore manage the red blood cell that detects in 292 and be returned to process chamber 18, and be prevented from entering blood plasma collection container 304.

The interface will in time be moved back to height-G wall.Controller 16 is kept these settings, detects erythrocytic haematocrit up to second sensor 336 and is reduced under the predetermined value, and it represents that a kind of deficiency overflows situation.

Overflow the situation response with deficiency, SC system controller 16 increases Q _P, detect erythrocytic haematocrit up to second sensor 336 and be higher than predetermined value.At this moment, controller 16 is with Q _PBe reset to the last value of excessively overflowing when sensed.

3. buffy coat collection

If desired, can in a given plasma collection procedure, periodically bring out a kind of situation of excessively overflowing, buffy coat is captured in (see figure 10) in the buffy coat collection container 376.As shown in figure 10, in the embodiment shown, buffy coat collection container 376 is by managing the 378 buffy coat port P4 that are connected to box 22.Buffy coat collection container 376 is suspended on the platform scale 246, and it provides the output value of reaction weight change, and controller 16 is derived the volume of the buffy coat of being gathered according to it.

In this is provided with, when detect bring out excessively overflow situation the time, blood processing loop 46 is designed to (by selected valve pressure and pumping plant pressure) and handles blood plasma pump PP2, and blood plasma is extracted out by pipe 378 from process chamber 18, this moment, valve V4 and V6 were closed, and valve V8 is opened.Buffy coat in the pipe 378 is transported in the buffy coat collection container 376.Blood processing loop 46 also is designed to handle and handles pump PP1 (promptly by valve V9 suction, discharging by valve V14) during this time, with the Q that sets _WBWhole blood is extracted into the process chamber 18 from container handling 3 12.Red blood cell is discharged from chamber 18 by the collection pipeline 294 in the collection container 308.

Following table has been summed up by buffy coat being captured in the design that alleviates the loop of the situation of excessively overflowing in the buffy coat collection container 376.

Table

Alleviate the design in the blood processing loop of the situation of excessively overflowing by the collection buffy coat

(plasma collection procedure)

V1	·
		V2	·
V3	·
		V4	。
V5	·
		V6	·
V7	·
		V8	·
V9	。/ pump into
		V10	/ pump
V11
		V12	/ pump into
V13
		V14	/ pump
V15
		V16
V17
		V18
V19
		V20
V21
		V22
V23
		PP1
PP2
		PP3	■
PP4	■

Illustrate:.The expression open valve; The valve that expression is closed;/ be illustrated in the valve of opening and closing during the pumping program; The pumping plant that ■ represents to leave unused (using); And represents pumping plant in use.

(by platform scale 246 monitoring) recover normal blood processing condition after the buffy coat of specified volume is transported in the buffy coat collection container 376.In processor, can bring out the buffy coat of sening as an envoy at interval with scheduled time and flow to pipe 378 the situation of excessively overflowing, be collected in the buffy coat collection container up to the buffy coat of required volume.

VI. another programmable blood processing loop

A. loop configuration

The programmable blood processing loop 46 that different structure can be arranged as previously mentioned.Fig. 5 has schematically shown a kind of exemplary configuration 46, has described the characteristics able to programme in this loop.Figure 34 represent another kind have the representative blood processing loop 46 of certain characteristics able to programme ' structure.

Similar loop 46, loop 46 ' comprise some pumping plant PP (N), they interconnect by one group of fluid flowing passage F (N) through series of valves V (N).This loop is connected to the remaining part of blood processor by port P (N).

Loop 46 ' the comprise programmable networks of flow channel F1 to F33.Loop 46 ' comprise 11 universal port P1 to P8 and P11 to P13 and four general pumping plant PP1, PP2, PP3 and PP4.By optionally operating these line valve V1 to V21 and V23 to V25, any universal port P1 to P8 and P11 to P13 can both be communicated with any general pumping plant PP1, PP2, PP3 and PP4.By optionally operating these valves, can be on forward or backward direction between two valves, or pass on the turnover direction of one-way valve guiding liquids any general pumping plant of directly flowing through.

In the embodiment shown, an individual flow passage (comprising flow channel F9, F23, F24 and F10) and pipeline station PP5 in loop 46 ' also comprise with two port P9 and P10.Why flow channel is called as " independently ", be because do not have exterior tube it just can not with loop 46 ' in any other flow channel directly be communicated with.By optionally handling line valve V21 and V22, liquid can be along forward or backward direction between two valves, or the pumping plant PP5 that directly flows through on turnover direction of passing one-way valve.

Similar loop 46, the special pump function in loop 46 ' can be designed to carry out.In a preferred embodiment, the general pumping plant PP3 of series connection and PP4 are used as the blood donors interface pump of a basic purpose, and do not consider concrete blood program.Loop 46 ' in two blood donors interface pumping plant PP3 and PP4 parallel operation.A pumping plant is with its pumping chamber of liquid suction, and another pumping plant is from its pumping chamber's drain.Pumping plant PP3 and PP4 alternately carry out the function of taking out, arranging.

In a preferred embodiment, the suction of suction plant is longer cycle time than the discharge of discharging pumping plant cycle time.This inlet side at pumping plant provides a continuous flow of fluid, provides a TRANSFER BY PULSATING FLOW at the outlet side of pumping plant.In a representational embodiment, the suction circulation is 10 seconds, and discharging circulation is 1 second.The suction circulation that excavationg pump stands in suction plant begins to carry out the circulation that it continues 1 second, has a rest in all the other 9 seconds at the suction circuit then.Then pumping plant switch take out, row function.This produces, and a continuous inlet flows and the outlet of a pulsation is flowed.Because liquid is imported a suction plant continuously in the whole procedure, so provide the pumping plant PP3 of two alternations and PP4 can reduce the entire process time.

In this is provided with, pumping plant PP4 in the similar loop 46, loop 46 ' independent pumping plant PP5 as a special anticoagulant pump, so that anticoagulant is added the blood through port P9 from an anticoagulant source through port P10 suction and with a certain amount of anticoagulant.

In this is provided with, with identical in loop 46, do not consider special blood processing program, common pumping plant PP1 is as a special processing whole blood pump, so that whole blood is imported blood separator.As in loop 46, pump is through the deixis cancellation of PP1, and blood donors interface pump PP3 and PP4 are from providing the additional function of whole blood to blood separator.Therefore, handle whole blood pump PP1 and can keep the continuous supply of blood to blood separator, and blood donors interface pump PP4 and PP5 serial operation, to return to bleeder from the blood donors blood drawing with blood simultaneously by fleams.Therefore loop 46 ' make processing time minimum.

In this is provided with, with identical in loop 46, do not consider special blood processing program, general pumping plant PP2 is as a blood plasma pump, to transmit blood plasma from blood separator.With identical in loop 46, loop 46 ' in special separation pump function provide one the turnover separator and the turnover blood donors continuous blood flow.

Loop 46 ' can be designed to carry out the above-mentioned various programs in loop 46.According to the purpose of specific blood processing program, loop 46 ' can be designed to keep all or some blood plasma is used for storage or classification, perhaps whole or some blood plasma is returned to blood donors.The purpose that depends on specific blood processing program, loop 46 ' can further be designed to be to keep all or some red blood cells are used for storage, perhaps will be all or some red blood cells return to blood donors.According to the purpose of specific blood processing program, loop 46 ' can further be designed to keeps all or some buffy coats are used for storage, perhaps will be all or some buffy coats return to blood donors.

(see Figure 34) in a preferred embodiment, loop 46 ' standard equipment 264 of formation ' a part, this equipment is connected on the port P1 to P13.

In more detail, have fleams 268 ' a feeder vessels 266 ' be connected to loop 46 ' port P8.Be connected to fleams 268 ' anticoagulant pipe 270 ' be connected with port P9.Hold the container 276 of anticoagulant ' by a pipe 274 ' be connected to port P10.

Hold the container 280 that a kind of red blood cell adds solution ' by a pipe 278 ' be connected on the port P3.Container 288 that holds physiological saline ' by a pipe 284 ' be connected on the port P12.Reservoir vessel 289 ' by a pipe 291 ' be connected on the port P13.Pipeline white blood cell loss filter 293 ' by pipe 291 ' be supported on port P13 and reservoir vessel 289 ' between.Container 276 ', 280 ', 288 ' and 289 ' can be used as an integral body to be connected on the port, perhaps can install by a suitable aseptic connection in use, thereby keep a blood processing environment aseptic, sealing.

Pipe 290 ', 292 ' and 294 ' extend to one be connected to process chamber 18 ' umbilical region 296 '.Pipe 290 ', 292 ' and 294 ' be connected respectively to port P5, P6 and P7.Pipe 290 ' under the operation of handling pumping plant PP1, whole blood is imported process chamber 18.The pipe 292 ' under the operation of blood plasma pump chamber PP2 from process chamber 18 ' conveying blood plasma.Pipe 294 ' from process chamber 18 ' conveying red blood cell.

Blood plasma collection container 304 ' by a pipe 302 ' be connected on the end P3.In use, collection container 304 ' as the blood plasma container in processor.

Red blood cell collection container 308 ' by a pipe 306 ' be connected to port P2.In use, collection container 308 ' be used to the receive red blood cell of a unit that is used to store.

Buffy coat collection container 376 ' by a pipe 377 ' be connected to port P4.In use, collection container 376 ' be used to the hold buffy coat that is used to store.

Whole blood container 312 ' by a pipe 310 ' be connected to end P1.In use, at blood donors interface pump PP3 and PP4 duration of work collection container 312 ' be used to receive whole blood, with dealing with the whole blood container.It also can be used for receiving the red blood cell of the Unit second that is used to store.

B. box

Shown in Figure 35 and 36, a molding and forming of programmable fluid loop 46 ' can be installed in, by the box 28 of air pressure control ' in.As previously mentioned, box 28 ' interact with pneumatic pump and valve station 30 is to provide same that concentrate, programmable and box 28 identical integral type worktable.

Figure 35 and 36 the expression wherein be equipped with loop 46 ' box 28 ' (schematically showing among Figure 34).As the description of front to box 28, a series of in wells, chamber and groove be formed on box body 188 ' the preceding and back side 190 ' and 192 ', to limit pumping plant PP1 to PP5 shown in Figure 34, valve station V1 to V25 and flow channel F1 to F33.In Figure 36, flow channel F1 to F33 is coated with dark so that watch.Flexible membrane 194 ' and 196 ' cover box body 188 ' the preceding and back side 190 ' and 192 ', seating is on the vertical edge of pumping plant PP1 to PP5, valve station V1 to V25 and flow channel F1 to F33.Pre-molded port P1 to P13 along box body 188 ' both sides stretch out.

Box 28 ' vertically be installed in pump and the valve station 30 in the mode identical with Fig. 2.In this direction (shown in Figure 36), side 192 ' facing to the outside, port P8 to P13 is facing to the below, and one of port P1 to P7 vertically stacks on another and facing to the inside.

As previously mentioned, by pump and valve station 30 diaphragm 194 ' on the part apply positive and negative hydrodynamic pressure so that this diaphragm deflection so that close and open valve station V1 to V25 or liquid is extracted out from pumping plant PP1 to PP5.

Another inner chamber 200 ' be arranged on box body 188 ' the back side 192 ' in.Chamber 200 ' work station of formation, its containment blood filtering material is so that remove the grumeleuse or the cellular grumeleuse that may form in the blood processing program.As shown in figure 34, loop 46, chamber 200 ' be arranged in ', between port P8 and blood donors interface pumping plant PP3 and PP4, the blood that therefore returns to blood donors this filter of can flowing through.The blood that returns by flow channel F27 enter chamber 200 ', and by flow channel F8 from chamber 200 ' come out.Chamber 200 ' also be used for collects blood donors and the air of the flow channel that comes out from blood donors.

Another inner chamber 201 ' (seeing Figure 35) also be arranged on box body 188 ' the back side 192 ' in.Chamber 201 ' be located at port P5 and handle loop 46 between the valve V16 of pump pumping plant PP1 ' in.Blood from flow channel F16 by chamber 201, hole 203 ' enter ', by hole 205 ' from chamber 201 ' escape and enter flow channel F5.Chamber 201 ', be separation chamber 26 ' service as box 28 ' another the interior impinger in the flow channel.Chamber 201 ' also be used as a container to weaken the jerk pump stroke of the processing pump PP1 that is separation chamber's service.

C. Xiang Guan pneumatic pipeline assembly

Figure 43 represent a pneumatic pipeline assembly 226 ', its can with box 28 ' be used in combination, so that positive and negative air pressure to be provided so that liquid by box 28 '.When the door of pumping plant 20 32 is closed, and air bag 314 is when expanding, the front 194 of diaphragm ' fit tightly pipeline assembly 226 '.Under the control of controller 16, different pressure of pipeline assembly 226 ' distribute selectively and degree of vacuum give box 28 ' pump and valve actuator PA (N) and VA (N).These pressure and vacuum values systematically impose on box 28 ', to provide the path of blood and treatment fluid.Under the control of controller 16, pipeline assembly 226 also dispense pressure is given door air bag 314 (describing), gives a blood donors pressure pullover (describing), gives a feeder vessels occluder 320 (describing).Shown in Figure 43 be used for box 28 ' the identical attribute of pipeline assembly 226 ' have aforementioned pipeline assembly many with shown in Figure 12 226.

Identical with pipeline assembly 226, a pneumatic pressure source 234 of pipeline assembly 226 ' be connected to ' on, it is arranged on lid 40 inside of pipeline assembly 226 ' back.With identical in pipeline assembly 226, be used for pipeline assembly 226 ' pressure source 234 ' comprise two compressor C1 ' and C2 ', but also can use one or more double end compressors.Compressor C1 ' is by pipeline assembly 226 ' give box 28 ' provide negative pressure.Another compressor C2 ' is by pipeline assembly 226 ' give box 28 ' provide malleation.

As shown in figure 43, pipeline assembly 226 ' comprise 5 pump actuator PA1～PA4 and 25 valve actuator VA1～VA25.Pump actuator PA1～PA25 valve actuator VA1～VA25 be orientated mutually with box 28 ' front 190 ' pumping plant PP1～PP5 of formation and the mirror image of valve station V1～V25.

Identical with pipeline assembly 226, pipeline assembly 226 shown in Figure 43 ' comprise the pneumatic valve of a series of electromagnetic actuation, it is connected with valve actuator VA1～VA25 with pump break PA1～PA5.

Identical with pipeline assembly 226, under the control of controller 16, several different pressure of pipeline assembly 226 ' maintenance and vacuum condition.

Identical with being connected of pipeline assembly 226 as described above, P _HighBe high pressure, and P _HandleBe that processing pressure is that the high positive pressure of pipeline assembly 226 ' keep is (for example+500mmHg), in order to cut-off valve V1～V25 and drive liquid and extrude from handling pump PP1 and blood plasma pump PP2.As previously mentioned, P _HandleSize must be enough to overcome pressure minimum near 300mmHg, it is present in the process chamber 18 usually.P _HighAnd P _HandleUnder the highest pressure, operate, can not be applied in the upstream and downstream valve of guaranteeing to be connected and open with the pressure bursts of operating pumps to pump with pumping.

Apply P _GeneralBe usual pressure (+300mmHg) extrude from blood donors interface pump PP3, PP4 and anticoagulant pump PP5 to drive liquid.

V _HighBe high vacuum (350mmHg) be applied to pipeline assembly 226 ' in to open the max vacuum of boxlike valve V1～V25.V _GeneralBe that conventional vacuum (300mmHg) is used to drive the pumping action of each pump PP1～PP5.V _GeneralBe lower than V _High, do not overwhelm upstream or downstream boxlike valve V1～V25 to guarantee pump PP1～PP5.

Main high pressure solenoid 322 ' and main vacuum tube 324 ' in pipeline assembly 324, distribute P _HighAnd V _HighPressure and vacuum source 234 ' continuous operation are so that high pressure solenoid 322 ' provide P to be provided _High, high-vacuum tube 324 ' provide V is provided _HighPressure transducer S2 monitoring high pressure solenoid 322 ' in P _HighSensor S2 opens and closes solenoid valve 38, to set up P _HighUp to its maximum value.

Similarly, high-vacuum tube 324 ' in pressure transducer S6 monitoring V _HighSolenoid valve 43 of sensor S6 control is with V _GeneralRemain in the specific pressure range.

Usual pressure pipe 326 ' from high pressure solenoid 324 ' branch away.Usual pressure pipe 326 ' in sensor S4 monitoring P _GeneralSolenoid valve 34 of sensor S4 control is with P _GeneralRemain in the specific pressure range.

Ordinary vacuum tube 330 ' from high-vacuum tube 324 ' branch away.Sensor S5 monitoring ordinary vacuum tube 330 ' in V _GeneralSolenoid valve 45 of sensor S5 control is with V _GeneralRemain in the specific vacuum range.

Pipeline container R1～R4 be arranged on high pressure solenoid 322 ', usual pressure pipe 326 ', high-vacuum tube 324 ' and ordinary vacuum tube 330 ' in.Container R1～R4 guarantees that above-mentioned constant compression force and vacuum conditions are stable and predictable.

In case program is finished, solenoid valve 32 and 34 just provides an outlet for pressure and vacuum.

Solenoid valve 41,2,46 and 47 separates container R1～R4 and air line, and described pipeline provides vacuum and pressure for pump and valve break.This provides pressure/vacuum decline feedback faster, therefore can finish the detection to box/pipeline assembly sealing.

Solenoid valve 1～25 provides P _HighOr V _HighWith driven valve actuators VA2～ VA25.Solenoid valve 27 and 28 provides P _HandleAnd V _GeneralHandle and blood plasma pump PP1 and PP2 to drive. Solenoid valve 30 and 31 provides P _GeneralAnd V _GeneralTo drive blood donors interface pump actuator PA3 and PA4.Solenoid valve 29 provides P _GeneralAnd V _GeneralTo drive AC pump actuator PP5.

Solenoid valve 35 provide an air bag 314 and high pressure solenoid 322 ' isolation.A sensor S1 monitoring P _DoorAnd control electromagnetic valve 35 is to keep-up pressure in specific scope.

Solenoid valve 40 provides P _HighWith open safe closed valve 320 '.Anyly may make blood donors be in dangerous error pattern will to discharge solenoid valve 40 with cut-off valve 320 ' and isolate blood donors.Similarly, any energy loss will discharge solenoid valve 40 and isolate blood donors.

Sensor S3 monitors P _{Tube head}And be connected with solenoid valve 37 with what keep blood donors with solenoid valve 36 and pulloverly be positioned at specific scope.

As previously mentioned, any solenoid valve can be worked under " normally opening " pattern, perhaps can be switched under " normally closing " pattern and operate, and vice versa.

D. pump function for example

According to the front about be contained in the description of the fluid loop 46 in the box 28, can similarly programme be contained in box 28 ' in fluid loop 46 ', with the various blood processing functions of having described.Identical with various blood processing programs, fluid loop 46 ' certain pump function will illustrate by example.

1. arriving the whole blood of handling container flows

In a given blood collection circuit first step, blood processing loop 46 ' be designed to is with co-operate blood donors interface pump PP3 and PP4 (applying pressure selected by giving valve and pumping plant), with before separating, anticoagulated whole blood imported container handling 312 ' in.

In the phase I, (see Figure 37 A), the suction circulation that pump PP3 carried out 10 seconds (promptly enters by valve V12 and V13, valve V6, V14, V18 and V15 close), this pump is connected with anticoagulant pump PP5 and (is promptly entered from valve V22, V21 comes out from valve) so that anticoagulation is passed through feeder vessels 270 suction pump PP3.Simultaneously, blood donors interface pump PP4 carries out 1 second discharge circulation (V7 comes out by valve), so that anticoagulation is entered container handling 312 ' (by the valve V4 that opens) by flow channel F20 and F1 from its chamber.

Last at the suction circuit that is used for pump PP3 (referring to Figure 37 B), this blood processing loop 46 ' be designed to handle 10 seconds discharge circulation of blood donors interface pump PP4 (promptly enter by valve V12 and V14, valve V13, V14 and V18 close), this pump is connected with anticoagulant pump PP5, so that anticoagulated blood is passed through feeder vessels 270 suction pump PP4.Simultaneously, blood donors interface pump PP3 carries out 1 second discharge circulation (V6 comes out by valve), so that anticoagulation is entered container handling 312 ' (by the valve V4 that opens) by flow channel F20 and F1 from its chamber.

These circulations that replace are proceeded, up to the anticoagulated whole blood of increment volume enter container handling 312 ', this is monitored by weighing transducer.Shown in Figure 37 C, blood processing loop 46 ' be designed to (promptly enter by valve V1 with operational processes pumping plant PP1, V16 comes out by valve) and blood plasma pump PP2 (promptly enter by valve V17, V11 comes out by valve, valve V9 opens with V10 and closes), with with anticoagulated whole blood from container handling 312 input process chambers 18 ' separate, simultaneously blood plasma is moved into blood plasma container 304 (by the valve V9 that opens), red blood cell is moved into red blood cell container 308 (by the valve V2 that opens), this relative loop 46 and mode of description is identical with the front.This step is proceeded, and is collected in (by the weighing transducer monitoring) in the blood plasma collection container 304 up to the blood plasma of an increment volume, and perhaps the red blood cell of a target volume is collected in (by the weighing transducer monitoring) in the red blood cell collection container.When blood processing was carried out, suction and discharge circulation that blood donors interface pump PP3 and PP4 hocket where necessary and replace were so that remain on the volume of container handling 312 ' middle anticoagulated whole blood between the minimum and maximum value of regulation.

2. the red blood cell that has the online adding of physiological saline returns

When requiring that red blood cell returned to blood donors (seeing Figure 37 D), blood processing loop 46 ' be designed to (promptly enter by valve V6 with the suction circulation that operation blood donors interface pump PP3 carried out 10 seconds, valve V13 and V7 close), with with red blood cell from red blood cell container 308 ' suction pump PP3 (by valve V2, the V3 and the V5 that open, valve V10 closes).Simultaneously, blood donors interface pump PP4 is operated the discharge circulation (come out by valve V14 and V18, valve V12 and V21 close) of carrying out 1 second, with red blood cell from its chamber by filtering cavity 200 ' enter blood donors.

Suction circuit last (seeing Figure 37 E) at pump PP3, blood processing loop 46 ' be designed to (promptly enter by valve V7 with the suction circulation that operation blood donors interface pump PP4 carried out 10 seconds, valve V6 and V14 close), with red blood cell from red blood cell container 308 ' suction pump PP4.Simultaneously, blood donors interface pump PP3 is operated the discharge circulation (come out by valve V13 and V18, valve V12 closes) of carrying out 1 second, with red blood cell from its chamber by filtering cavity 200 ' enter blood donors.These alternate cycles are proceeded, and are returned to blood donors up to the red blood cell of required volume.

Simultaneously, valve V24, V20 and V8 open, thus suction plant PP3 or PP4 also with physiological saline from physiological saline container 288 ' extraction, physiological saline is used for mixing with the red blood cell of suction chamber.As previously mentioned, physiological saline and erythrocytic this on-line mixing raise physiological saline temperature and improved the travelling comfort of blood donors, also reduced erythrocytic haematocrit simultaneously.

Simultaneously, operational processes pump PP1 (promptly enters by valve V1, V16 comes out by valve) and blood plasma pump PP2 (V17 enters by valve, V11 comes out by valve, valve V9 opens), so that anticoagulated whole blood is imported the process chamber that is used to separate from container handling 312, simultaneously blood plasma is moved into blood plasma container 304, the identical mode of mode that adopts relative loop 46 with the front to describe is carried out.

3. the online adding of red blood cell additional solutions

A blood processing program that is used for storing by collection at red blood cell (for example two unit red blood cell capture programs or red blood cell and plasma collection procedure), blood processing loop 46 ' be designed to is operated the suction circulation that blood donors interface pump PP3 carried out 10 seconds and (is promptly entered by valve V15 and V13, valve V23 opens, valve V8, V12 and V18 close), with the red blood cell preserving solution from container 280 ' suction pump PP3 (seeing Figure 38 A).Simultaneously, loop 46 ' be designed to is operated blood donors interface pump PP4 and is carried out 1 second discharge circulation (V17 comes out by valve, valve V14 and V18 close), so that being discharged to, the red blood cell preserving solution preserves (for example container handling 312 (by the valve V4 that opens) or red blood cell collection container 308 ' (by valve V5, the V3 and the V2 that open, valve V10 closes)) in the erythrocytic container.

Suction circuit last (seeing Figure 38 B) at pump PP3, blood processing loop 46 ' be designed to is operated the suction circulation that blood donors interface pump PP4 carried out 10 seconds and (is promptly entered by valve V14, valve V7, V18, V12 and V13 close), with the red blood cell preserving solution from container 280 ' suction pump PP4.Simultaneously, blood donors interface pump PP3 is operated the discharge circulation (V6 comes out by valve, and valve V13 and V12 close) of carrying out 1 second, preserves in the erythrocytic container so that the red blood cell preserving solution is discharged to.These alternate cycles are proceeded, and are added to red blood cell up to the red blood cell preserving solution of required volume.

4. online white blood cell emptying

Loop 46 ' have from the red blood cell of gathering and reduce leukocytic ability gradually.In this mode, (see Figure 39 A), loop 46 ' be designed to is operated the suction circulation that blood donors interface pumping plant PP3 carried out 10 seconds and (is promptly entered by valve V6, valve V13 and valve V12 close), with with red blood cell from preserving among erythrocytic container (for example container handling 312 ' (by valve V4 that opens) or red blood cell collection container 308 (by valve V5, the V3 and the V2 that open, valve V10 closes)) the suction pump PP3.Simultaneously, 1 second discharge circulation is carried out with operation blood donors interface pump PP4 in loop 46 ' be designed to, and (V14 comes out by valve, valve V18 and V8 close, valve V15 and V25 open), with red blood cell by white blood cell filter 293 ' by manage 291 ' be discharged to do not have leukocytic red blood cell reservoir vessel 289 ' in.

Suction circuit last (seeing Figure 39 B) at pump PP3, blood processing loop 46 ' be designed to (promptly enter by valve V7 with the suction circulation that operation blood donors interface pump PP4 carried out 10 seconds, valve V14 and V18 close), with red blood cell from container 312 ' or 308 ' suction pump PP4.Simultaneously, blood donors interface pump PP3 is operated the discharge circulation of carrying out 1 second, and (V13 comes out by valve, valve V12 closes, and valve V15 and V25 open), with red blood cell by white blood cell filter 293 ' by manage 291 ' be discharged to do not have leukocytic red blood cell reservoir vessel 289 ' in.These alternate cycles are proceeded, up to the red blood cell of required volume by filter 293 ' input pod 289 ' in.

5. buffy coat collection stage by stage

(see figure 5) in loop 46, buffy coat is gathered by port P4, and this port connects flowline F4, and F4 tells from flowline F26, and it delivers to blood plasma collection container 304 (also seeing Figure 10) with blood plasma from blood plasma pumping plant PP2.Loop 46 ' in (seeing Figure 34), buffy coat is gathered from flowline F6 by port P4, this is controlled by valve V19.Buffy coat is gathered the pipeline line through blood plasma pumping plant PP2, makes blood plasma pumping plant PP2 avoid being exposed to buffy coat, thereby the blood plasma of collection is not polluted by buffy coat.

In separable programming, SC system controller (describing) with buffy coat remain on separation chamber 18 ' in, apart from the certain distance of low-G wall, leave sampled plasma pipeline 292 (seeing Figure 15 A).When the operation of blood plasma by blood plasma pump PP2 from 304 ' time of chamber input blood plasma collection container, this can make the buffy coat composition assemble in processor.

In order to gather the buffy coat composition of gathering, the controller opens buffy coat is gathered valve V19, closes inlet valve V17 and the red blood cell of blood plasma pump PP2 and gathers valve V2.Handle pump PP1 and continue operation, with whole blood bring into chamber 18 ' in.Inlet chamber 18 ' in flowing of whole blood buffy coat is moved on to the low-G wall, bring out a kind of situation (seeing Figure 15 B) of excessively overflowing.The buffy coat composition enters sampled plasma pipeline 292 ' and enter flowline F6 by port P6.Loop 46 ' with the buffy coat composition among the F6 is by the direct intake pipeline F4 of the valve V19 that opens, F4 for enter by port P4 collection container 376 ' pipeline.

When sensing station 332 sensed erythrocytic the existence, valve V19 closed.Blood plasma pumping plant PP2 can temporarily (V11 enters by valve with opposite flow direction operation, V17 comes out by valve, valve 9 is opened) so that blood plasma is from collection container 302 ' process pipe 292 ' flow to separation chamber, with residual red blood cell from managing 292 ' refunds separation chamber.Controller can continue normal blood plasma and red blood cell collection again, by open red blood cell gather valve V2 and operate blood plasma pumping plant PP2 (V17 enters by valve, and V11 comes out by valve) begin again with blood plasma from separation chamber's input collection container 302 '.

In processor, can bring out the situation of excessively overflowing that causes buffy coat collection campaign, be collected in the buffy coat collection container up to the buffy coat of required volume at predetermined interval.

Other

As shown in phantom in Figure 43, pipeline assembly 226 ' can comprise an auxiliary pneumatic actuator A _Auxilliary, its selectively give to cover inner chamber 201 ' flexible membrane apply P _High(seeing Figure 35).As previously mentioned, discharge (by applying P by pumping plant PP1 by actuator PA2 _High) whole blood through via hole 203 ' and 205 ' enter flow channel F5, enter process chamber 18 '.In the next stroke of PP1, by applying V by actuator PA2 _GeneralWith the whole blood suction PP1 of pumping chamber, stay chamber 201 ' in remaining whole blood by hole 205 ' enter flow channel F5, and pass through A _AuxilliaryThe P that applies _HighEnter process chamber 18 '.Chamber 201 ' also is as a container, with the jerk pump stroke of the processing pump PP1 that decays to process chamber 18 ' work.

Before use, need be to the box 28 shown in Figure 35 and 36 ' carry out performing leak test.Sealing test determine box 28 ' in pump and valve station do not leak.In this case, need with box 28 ' with separation chamber 26 ' separate.Loop 264 ' in valve V19 and V16 (seeing Figure 34) provide whole blood inlet and chamber 18 ' blood plasma pipe 292 ' and 296 ' between isolation.For provide separate red blood cell pipe 294 ' ability, the fluid actuated station of additional valve VA26 can be added to pipeline assembly 26 ' in, apply malleation, cut-off valve V26 when needs are isolated to give valve 26, and apply negative pressure for valve 26, when not needing to isolate, open valve V26.

A. molded process chamber

The embodiment of a centrifugal treating chamber 18 of Figure 21 to 23 expression, it can be used in combination with system 10 shown in Figure 1.

In the embodiment shown, process chamber 18 is prefabricated into required shape and structure, for example by molding and forming, is made by a kind of plastic materials firm, biological adaptation, for example a kind of medical grade acrylonitrile-butadiene-styrene copolymer (ABS) of non-plasticizing.

The precast construction of chamber 18 comprises a molded base portion 388.Base portion 388 comprises a center hub 120.Hub 120 radially centers on (seeing Figure 21 and Figure 23) by inside and outside annular wall 122 and 124.Between them, inside and outside annular wall 122 and 124 defines an annular blood separation passage 126.The bottom (seeing Figure 22) of molded annular wall 148 enclosed slots 126.

The top of groove 126 is by independent molded flat cover 150 sealings (in order to illustrate, it is illustrated among Figure 21 individually).In linkage editor, lid 150 is fixed to the top of chamber 18, for example by a columniform sonic welded horn.

All profiles, port, groove and the wall that influences the blood separation program in a molding and forming operation by in advance in base portion 388.Perhaps, base portion 388 can be formed by moulded parts independently, or the assembly of a cover cup-shaped or the half module of two symmetries.

Lid 150 comprises a simple flat part, and they are easy to be welded to base portion 388.Because all features that influence separable programming are involved in the element of a molding and forming, at base portion 388 with cover the separating effect that any tolerance between 150 can not influence chamber 18.

Pre-profile, port, groove and wall in base portion 388 can change.In the embodiment shown in Figure 21 to 23, the several of circumferentially spaced extend to inner annular wall 122 to reinforcing wall 128,130 and 132 from hub 120.Reinforcing wall 128,130 and 132 provides certain rigid for chamber 18.

As shown in figure 23, Nei Bu annular wall 122 is open between a pair of reinforcing wall 130.Opposed reinforcing wall forms a uncovered inner region 134 in hub 120, it is communicated with groove 126.By this zone 134, blood and liquid are imported into or derived score separate slot 126 from umbilical region 296.

(as shown in figure 23) in this embodiment, a molded inwall 136 that is formed in the zone 134 extends fully through groove 126, is connecting the annular wall 124 in the outside.Wall 136 forms a terminal in separating groove 126, this terminal makes along the circumferential flow of groove 126 interrupts.

Molded inwall in addition is divided into three passages 142,144 and 146 with zone 124.Passage 142,144 and 146 is communicated with from hub 120 extensions and with the groove 126 on end wall 136 opposites.Blood and other liquid directly import or derive groove 126 by these passages 142,144 and 146 from hub 120.The same as will be described below in more detail, passage 142,144 and 146 can import blood constitutent or derive groove 126 in a different manner.

The downside of base portion 388 (seeing Figure 22) comprises a receiver 179 that becomes definite shape.Three prefabricated nozzles 180 occupy receiver 179.In the passage 142,144 and 146 on each nozzle guiding base portion 388 opposites one.

The far-end of umbilical region 296 comprises an assembling set 178 (seeing Figure 24 and 24A) that becomes definite shape.The shape of assembling set 178 conforms to the shape of receiver 179.Therefore assembling set 178 can be inserted into (as shown in figure 25) in the receiver 179.Assembling set 178 comprises inner chamber 398 (seeing Figure 24 A), and it slips over the nozzle 180 in the hub 120, so that umbilical region 296 is communicated with groove 126.

Rib 181 (seeing Figure 22) in the receiver 179 is arranged separately in the keyway 183 that is formed on the assembling set 178 (seeing Figure 24 A).The cooperation of the uniqueness between rib 181 and the keyway 183 is set, to determine a specific direction that assembling set 178 is inserted receiver 179.Therefore, guaranteed desired flow direction in umbilical region 296 and passage 142,144 and 146.

In the embodiment shown, umbilical region 296 and assembling set 178 are made by one or more materials that can resist suitable bending and warping force, and in use umbilical region 296 can be subjected to these power.For example can use a kind of Hytrel ^The polyester material.

This material of very suitable umbilical region 296 is incompatible with the ABS plastic material of base portion, and a kind of material in back is selected to provide a kind of firm, molded blood processing environment.Therefore assembling set 178 can not be received receiver 179 by traditional solvent bonding or ultrasonic welding technical battery.

(see Figure 24 and 25) in this set, the size Selection of receiver 179 and assembling set 178 preferably can provide a dry-pressing closely to cooperate.In addition, a capture pieces 185 that is formed by the ABS material is preferably disposed on around the umbilical region 296 of receiver outside, and contacts with the periphery of receiver 179.Capture pieces 185 is fixed on the periphery of receiver 179, for example by forging and pressing or ultrasonic welding connection technology.Capture pieces 185 prevents that assembling set 178 from separating with the careless of receiver 179.Therefore, even use inconsistent plastic materials, umbilical region 296 also can be integrally connected to the base portion 38 of chamber 18.

Centrifugal station 20 (seeing Figure 26 to 28) comprises a centrifugal separator 48.Centrifugal separator 48 is configured and is used for holding and supporting molded process chamber 18.

As described, centrifugal separator 48 comprises a centering frame 154, and this has the end, top and sidewall 156,158,160.The rotation on a bearing element 162 that is connected to diapire 156 of centering frame 154.An electric drive motor 164 is connected to the diapire 156 of centering frame 154 by an axle, so that the frame 154 of feeling relieved is around axis 64 rotations.In the embodiment shown, axis 64 15 degree that on the horizontal plane of base portion 38, tilt approximately, but also can use other angle.

A rotating disk 166 is around the rotation in centering frame 154 of its bearing element 168, and this bearing element is connected to the roof 158 of centering frame 154.The basic spin axis axis in line with centering frame 154 around one of rotating disk 166 rotates.

The top of process chamber 18 comprises an annular lip 380, is fixed with on it and covers 150.The clamping element 382 that is supported on rotating disk 166 peripheries is fastened with lip 380, process chamber 18 is fastened on the rotating disk 166 so that rotation.

A sheath 182 of umbilical region 296 near-ends is packed in the support 184 at centrifugal station 20.Support 184 is fixed on a position of rest of not rotating with the near-end of umbilical region 296, and this position is aimed at the axis 64 of rotating disk 166 with centering frame 154 in line.

In the rotation program of centering frame 154, the middle part of an outstanding arm 186 contact umbilical regions 296 from the one or both sides of centering frame 154.Be subjected to the restriction (wherein assembling set 178 is fixed in the receiver 179) of the chamber 16 of the support 184 of its near-end and its far-end, when umbilical region 296 during around the axis rotation of centering frame 1 54, its can be around the axis bending of himself.When umbilical region 296 rotates with centering frame 154 with the rotating speed of Ω, thisly rotating disk 166 is passed in the rotation of twice ω rotating speed, thereby passed to process chamber 18 around reversing of its axis.

Relatively rotating of the centering frame 154 of 1 ω rotating speed and the rotating disk 166 of 2 ω rotating speeds can not twisted umbilical region 296, avoided the needs to rotary seal.Described setting allows that also a drive motor will rotatablely move on the centering frame 154 and rotating disk 166 that is delivered to mutual rotation by umbilical region 296.The details of this set is disclosed in the U. S. Patent 4,120,449 of Brown, and the document here is cited as a reference.

Blood is imported into process chamber 18, and separates therein when it rotates.

In a kind of mobile setting (seeing Figure 29), when process chamber 18 rotations (seeing the arrow R among Figure 29), umbilical region 296 passes through whole blood in passage 146 input slots 126.The direction mobile (being counterclockwise in Figure 29) that whole blood edge in groove 126 is identical with rotation.Perhaps, chamber 18 can be rotated in the opposite direction with the circumferential flow side with whole blood, and is promptly clockwise.The centrifugal force that mode produces shown in Figure 15 A separates whole blood.Red blood cell gets rid of to height-G wall 124, and lighter plasma fraction is thrown toward low-G wall 122.

In this type of flow, the height-G wall 124 of a retaining wall 384 in groove 126 is outstanding.Retaining wall 384 stops blood plasma to pass through, and allows that red blood cell flows in the groove 386 in height-G wall 124.Groove 386 imports umbilical region 296 with red blood cell by radial passage 144.Plasma fraction is imported umbilical regions 296 from groove 126 by radial passage 142.

Because red blood cell drain tank 386 extends to height-G wall 124 outsides, thereby the distance from spin axis is also far away than height-G wall, during blood processing, red blood cell drain tank 386 allows that the interface between red blood cell and the buffy coat is very near from height-G wall, and does not make buffy coat overflow into red blood cell acquisition channel 144 (producing a kind of situation of excessively overflowing).Therefore drain tank 386 makes erythrocytic output maximum (in a red blood cell capture program) or allows and gather a kind of hematoblastic blood plasma (in a plasma collection procedure) that do not have substantially.

Another kind flow be provided with in (seeing Figure 30), umbilical region 296 with whole blood by in passage 142 input slots 126.Process chamber 18 is with the direction rotation (see arrow R in Figure 30) identical with whole blood flow direction (being clockwise direction in Figure 30).Perhaps, chamber 18 with the circumferential flow direction of whole blood, the direction rotation that promptly clockwise direction is opposite.The centrifugal force that mode produces shown in Figure 15 A separates whole blood.Red blood cell gets rid of to height-G wall 124, and lighter plasma fraction is thrown toward low-G wall 122.

In this type of flow, retaining wall 384 (previously described) stops blood plasma to pass through, and allows that red blood cell flows in the groove 386.Groove 386 imports umbilical region 296 with red blood cell by radial passage 144.Plasma fraction is imported umbilical regions 296 from the opposite end of groove 126 by radial passage 146.

In optional mobile setting of another kind (seeing Figure 31), umbilical region 296 passes through whole blood in passage 144 input slots 126.Process chamber 18 is with the direction rotation (see arrow R in Figure 31) identical with whole blood flow direction (being clockwise direction in Figure 31).Perhaps, chamber 18 with the circumferential flow side of whole blood in the opposite direction, i.e. rotation counterclockwise.The centrifugal force that mode produces shown in Figure 15 A separates whole blood.Red blood cell gets rid of to height-G wall 124, and lighter plasma fraction is thrown toward low-G wall 122.

In this flow pattern, the partition wall 385 that is positioned at groove 126 opposite ends stops blood plasma to pass through, but allows that red blood cell flows in the groove 387.Groove 387 imports red blood cell in the omphalion 296 through radial passage 146.Plasma fraction from the other end of groove 126 in the 142 input omphalions 296 of radial passage.In this structure, the existence of partition wall 384 and flute profile passage 386 (previously described) can make the whole blood stream (in passage 144) that enters separate with the plasma flow (in passage 142) of output.If desired, this fluidal texture makes and is rich in hematoblastic sampled plasma and becomes possibility.

(see Figure 32) in another kind of fluidal texture, passage 144 is with the direction different with passage 142 and 146, extend in the groove 126 from hub 120.In this structure, end wall 136 makes passage 142 separate with 146, and passage 144 the position between passage 142 and 146 be communicated with groove 126.In this structure, omphalion 296 through passage 146 with whole blood input slot 126 in.Process chamber 18 is with the direction rotation (in Figure 32 arrow R) identical with whole blood flow direction (clockwise direction among Figure 32).Perhaps, chamber 18 promptly counterclockwise rotates with the direction opposite with the tangent line flow direction of whole blood.In mode shown in Figure 15 A, because the result of centrifugal force, separation of whole blood.Force red blood cell to flow, and make of wall 122 motions of lighter plasma fraction towards low-G towards the wall 124 of height G.

In this flow pattern, passage 144 is carried blood plasma from groove 126, and passage 142 is carried red blood cell from groove 126 simultaneously.

As previously mentioned, in any flow pattern shown in Figure 28-32, chamber 18 can with groove 126 in whole blood tangent line mobile phase with or the rotation of opposite direction.In any situation, all can produce described blood separation.But, have been found that in separable programming can make interference that for example Coriolis' effect is reduced to minimum, thereby improve separating effect with the direction turning cell 18 identical with whole blood flow direction in the groove 126.

Embodiment

At different experimental sessions, whole blood is separated into red blood cell and blood plasma in chamber shown in Figure 28 18.In a chamber (being called as chamber 1), whole blood flows along the direction tangent line identical with chamber 18 sense of rotation (being that chamber 18 rotates in the counterclockwise direction) in groove 126.In another chamber 18 (being called as chamber 2), whole blood flows along the direction tangent line opposite with chamber sense of rotation (being that chamber 18 is along rotating along counter clockwise direction) in groove 126.For different blood flow volumes, measure the erythrocytic average haematocrit of being gathered, and under the various combination of red blood cell inlet flow velocity and blood plasma exit velocity, carry out.Following table has been summed up each result of experiment.

Table 1

(flowing) with the direction identical with rotation

	The haematocrit (%) of average whole blood	The erythrocytic average haematocrit of being gathered
			Processed blood sampling quantity
7	45.4	74.8
			4	40	78.8

Table 2

(flowing) with the direction opposite with rotation

	The haematocrit (%) of average whole blood	The erythrocytic average haematocrit of being gathered
			Processed blood sampling quantity
3	43.5	55.5
			2	42.25	58.28

Table 1 and 2 shows that when the blood in the chamber flowed along the direction identical with rotation, erythrocytic haematocrit ratio was big when flowing in opposite direction.Higher red blood cell yield also means higher blood plasma yield.

Figure 33 represent a chamber 18 ', its have one to the similar single entry molded base 388 shown in Figure 21 to 23 ', but form two runners 126 ' and 390 therein.Runner 126 ' and 390 be eccentric as shown in the figure, but they needn't be done like this.The many structure characteristics identical of chamber 18 ' have with chamber 18 among Figure 23.Identical structure characteristic is marked by the same reference numerals by the asterisk mark.

Pedestal 388 ' a comprise center hub 120 ', its by inside and outside annular wall 122 ' and 124 ' radial ring around, between them, be limited with circumferential blood separation groove 126 '.In this embodiment, one second inner annular wall 392 radially around hub 120 '.At interior annular wall 122 ' and define the second circumferential blood separation groove 390 between 392.This structure has formed eccentric outside and inner separating vessel 126 ' and 390.

Contiguous partition wall 384 ' annular wall 122 ' in one cut off 394 externally and inner separating vessel 126 ' and set up the relation that fluid is communicated with between 390.Inwall 396 groove 126 ' and 390 opposed end between stoped the fluid connection.

When process chamber 18 ' rotation (the arrow R among Figure 33), umbilical region 296 through passage 144 ' with whole blood input slot 126 ' in.The direction that whole blood is identical with sense of rotation on groove 126 ' middle edge mobile (being counterclockwise in Figure 33).Perhaps, chamber 18 ' with the opposite direction of whole blood tangent line flow direction, i.e. rotation counterclockwise.The centrifugal force that produces in mode shown in Figure 15 A makes separation of whole blood.Make the wall 124 of red blood cell Chao Gao-G ' flow, and make lighter plasma fraction towards the wall 122 of low-G ' flow.

As previously mentioned, partition wall 384 ' prevention blood plasma passes through, allow simultaneously red blood cell flow into the wall 124 of height-G ' in groove 386 ' in.Groove 386 ' through radial passage 142 ' red blood cell is imported in the umbilical region 296.Plasma fraction from groove 126 ', cut off 394 through discontinuities and be transfused to inner separating groove 390.

Plasma flow with the direction tangent line that external slot 126 ' middle whole blood flow direction the is opposite interior groove 390 of flowing through.With centrifugal force response, remain in blood platelet in the blood plasma against annular wall 124 ' move.Groove 390 with plasma fraction be directed to chamber 18 ' same side, at this place, whole blood is imported into earlier.By passage 146 ' from groove 390, carry plasma fraction.

VIII. other blood processing function

By describing separation of whole blood is that constituent element is so that storage and blood constitutent therapy have illustrated many features of the present invention.This is because the present invention can be used to carry out these blood processing programs well.But should be appreciated that feature of the present invention can be used in other the blood processing program equally.

For example, used a kind of system and method for the case able to programme that links to each other with the blood processing chamber can in operation, be used for cleaning or remedying blood cell, or be used to treat the exchange of blood plasma, or be used for making blood in other any program of the extracorporeal path circuit that is used for the treatment of.

Feature of the present invention should be limited in the following claim.

Claims (26)

1. the system of a pumping fluid comprises:

A pump chamber;

Flexible membrane on described pump chamber, response institute applied pressure is so that conveyance fluid passes described pump chamber;

With fluid conduction electrodes in contact, be connected with a power supply in described pump chamber, so that produce electric field in described pump chamber, described electric field changes and changes along with the Fluid Volume in the described pump chamber; And

The testing circuit that is connected with described electrode flows through described pump chamber along with fluid is transferred, the variation of record electric field.

2. the system as claimed in claim 1 is characterized in that, described testing circuit comprises a processor, is used to handle the variation of electric field, and produces an output.

3. system as claimed in claim 2 is characterized in that, described processor comprises an operation, and being used for derives a value that shows the Fluid Volume that described pump chamber is carried according to described output.

4. system as claimed in claim 2 is characterized in that, described processor comprises an operation, and being used for derives a value that shows the fluid-flow rate that described pump chamber is carried according to described output.

5. system as claimed in claim 2 is characterized in that, described processor comprises an operation, is used for deriving one according to described output and shows that there is the value of air in described pump chamber.

6. system as claimed in claim 2 is characterized in that, described processor comprises an operation, and being used for derives a value that shows described pump chamber flow blockage according to described output.

7. system as claimed in claim 2 is characterized in that, described processor comprises an operation, is used for demarcating described output according to the stroke volume of described pump chamber.

8. system as claimed in claim 2 is characterized in that, also comprises a controller that engages with described processor, is used at least in part according to described output, changes institute's applied pressure.

9. system as claimed in claim 2 is characterized in that, described processor comprises an operation, is used to write down described output over time.

10. system as claimed in claim 9 is characterized in that, described processor comprises an operation, is used for described output and a setting value are compared, to obtain a deviation.

11. system as claimed in claim 10 is characterized in that, described processor comprises an operation, is used to write down described deviation over time.

12. the system as claimed in claim 1 is characterized in that, the caused capacitance variations of described testing circuit record electric field change.

13. system as claimed in claim 12 is characterized in that, described testing circuit comprises a processor, to handle changes in capacitance and to produce an output.

14. the system as claimed in claim 1 is characterized in that, also comprises the pipe that is communicated with described pump chamber, so that be connected between a blood source and the blood separating mechanism described pump chamber is online.

15. the system as claimed in claim 1 is characterized in that, also is included in the actuator that moves with described flexible membrane during the described intervals of strokes, so that pumping fluid passes described pump.

16. system as claimed in claim 15 is characterized in that:

Described actuator provides intervals of strokes, and described intervals of strokes comprises the time lag component that fluid is pumped into described pump, and fluid is discharged the time lag component of described pump, and standby time component at interval; And

Described testing circuit comprises that a controller is used for regulating the one or more of described time lag component, to obtain desired flowing velocity.

17. system as claimed in claim 15 is characterized in that, described controller comprises a diagnostic operation, according to the unusual working state of variation detection of described electric field, to produce an alarm output.

18. the system as claimed in claim 1 is characterized in that:

Described flexible membrane, response institute applied pressure is pumped into described pump chamber with fluid in the suction circulation, in discharging circulation fluid is discharged described pump chamber; And

Suction of described testing circuit record and the caused capacitance variations of discharge cycle period electric field change, when described pump chamber full of liquid, described electric capacity has high signal amplitude, when described pump chamber does not have fluid, described electric capacity has low signal amplitude, neither full of liquid when neither not have fluid, described electric capacity mediates in the signal amplitude scope when described pump chamber.

19. system as claimed in claim 18 is characterized in that, described testing circuit comprises an operation, demarcates poor between described high signal amplitude and the low signal amplitude with respect to the stroke volume of described pump chamber.

20. system as claimed in claim 18, it is characterized in that, described testing circuit comprises an operation, and it is relevant with the fluid volume of discharge with the pump chamber suction with the difference of discharging between the detected minimum and maximum signal amplitude of cycle period to make continuous suction circulation.

21. system as claimed in claim 20 is characterized in that, described testing circuit comprises an operation, the Fluid Volume of sample time period institute's pumping is added up and obtains flow velocity.

22. system as claimed in claim 21 is characterized in that, described testing circuit comprises an operation, record flow velocity and the deviation between the flow velocity of requiring.

23. system as claimed in claim 21 is characterized in that, also comprises a controller, is used to change the pressure that is applied on the described flexible membrane to reduce deviation.

24. system as claimed in claim 18 is characterized in that, described testing circuit comprises an operation, and the growth in time of record low signal amplitude produces the warning sign that has air in the reflection pump chamber.

25. system as claimed in claim 18 is characterized in that, described testing circuit comprises an operation, draws the derivative of a period of time capacitance variations, according to the variation of described derivative or there is not derivative, produces the warning sign that a reflection pump chamber blocks.

26. the system as claimed in claim 1 is characterized in that, also comprises a blood processing apparatus that is connected with the pump chamber circulation.

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