CN103813818A

CN103813818A - Fluid circuit kit for medical use and fluid circuit system using same

Info

Publication number: CN103813818A
Application number: CN201280044808.9A
Authority: CN
Inventors: 根本茂; 增田和正; 栗本宗仁
Original assignee: KK Negi Kyorindo
Current assignee: KK Negi Kyorindo
Priority date: 2011-07-14
Filing date: 2012-07-13
Publication date: 2014-05-21
Anticipated expiration: 2032-07-13
Also published as: JP6316924B2; JP2020096989A; CN103813818B; CN106943642B; JP6071880B2; WO2013008929A1; CN106943642A; JP2018118099A; JP6676686B2; JP2017094128A; JPWO2013008929A1

Abstract

This fluid circuit kit (201) comprises a contrast medium line (205), a saline line (206), a syringe line (204), a patient line (208), and a base line section (210) to which each line is connected. The contrast medium line (205) is connected to the base line section (210) by a dual check valve (215A) that only allows the flow of a fluid in a predetermined direction, and the saline line (206) is also connected to the base line section (210) by a similar dual check valve (215B). The fluid circuit kit (201) further comprises a release valve (202A) that is disposed on the saline line (206) and opens and closes the line by moving a movable member (203) thereof.

Description

Therapeutic medical fluid loop suit and the fluid loop system that uses this fluid loop to be set with

Technical field

The present invention relates to fluid loop suit from the such as medicinal liquid such as contrast agent, normal saline to patient and system for inject, relate in particular to angiographic fluid loop suit and systems such as can being applied to cardia catheterization.

Background technology

As therapeutic medical diagnostic imaging device, there is CT(Computed Tomography: computer tomography) scanner, MRI(Magnetic Resonance Imaging: nuclear magnetic resonance) device, PET(Positron Emission Tomography: positron emission computerized tomography) device, angiography (angiography) device and MRA(MR Angio: magnetic resonance angiography) device etc.While stating in the use device shooting patient's image, large multidirectional patient injects the medicinal liquid such as contrast agent, normal saline.

The fluid loop system (for example Fig. 7 A～Fig. 7 B) of use in the time carrying out angiography is disclosed in patent documentation 1.This system is used for the normal saline source being connected with fluid loop, the medicinal liquid of source of contrast to be incorporated in syringe, and above-mentioned medicinal liquid is injected towards patient.

TOHKEMY 2007-222656 communique

In addition, conventionally, in the time carrying out angiography, need order according to the rules to aspirating contrast agent in syringe and injecting contrast agent and to aspirating normal saline in syringe and to patient's saline injection (referring to aftermentioned) to patient.In such angiographic procedure, the threeway plug valve that needs operating liquid loop in the case of operation technique person, in the time producing operation technique person's operation mistake, can not suitably carry out angiography.

Summary of the invention

The present invention considers that above-mentioned problem points makes, and its object is to provide and can carries out implementing well complicated operation angiographic fluid loop suit and fluid loop system in the case of the person that do not need operation technique.

The fluid loop suit of a technical scheme of the present invention is to achieve these goals as described below.A therapeutic medical fluid loop suit, it is applied to angiography, and wherein, this fluid loop suit comprises: contrast agent pipeline, it is connected with contrast agent chamber, normal saline pipeline, it is connected with normal saline chamber, syringe pipeline, it is connected with syringe, patient's pipeline, it is for carrying contrast agent or normal saline towards patient, and base portion pipeline portion, it is connected with above-mentioned each pipeline, and connect into respectively T word shape with above-mentioned contrast agent pipeline and above-mentioned normal saline pipeline, and, this fluid loop suit also comprises: the 1st valve member, it is disposed at the connecting portion between above-mentioned contrast agent pipeline and above-mentioned base portion pipeline portion, the 1st valve member is configured to, (i) in the case of liquid has been aspirated towards the upstream side of above-mentioned base portion pipeline portion, contrast agent flows in above-mentioned base portion pipeline portion in contrast agent pipeline, in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed, liquid flows towards the direction in downstream to the upstream side from above-mentioned base portion pipeline portion by this valve member, the 2nd valve member, it is disposed at the connecting portion between above-mentioned normal saline pipeline and above-mentioned base portion pipeline portion, the 2nd valve member is configured to, in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed or liquid by from above-mentioned normal saline pipeline side in the situation that the 2nd valve member side has been pushed, liquid flows or to flowing towards the direction of the 2nd valve member side from above-mentioned normal saline pipeline side towards the direction in downstream from the upstream side of above-mentioned base portion pipeline portion, and the 1st relief valve (Japanese: リリースバ Le Block), it has movable link and is disposed on above-mentioned normal saline pipeline, for by making above-mentioned movable link move and above-mentioned normal saline pipeline is opened and closed.

In addition, the fluid loop system of a technical scheme of the present invention comprises: above-mentioned therapeutic medical fluid loop suit; Infusion appliance, it to be the mode that is set with the syringe dismounting being connected with this fluid loop can be kept to this syringe, and the piston component of this syringe is moved and carries out injection and the suction of liquid; And switch, its part for keeping aforesaid liquid loop to be set with, and there is the driver part that the above-mentioned movable link for making at least above-mentioned the 1st relief valve moves.

In this manual, " connection " not only refer to regulation member be directly connected with object, also comprise that the member of regulation is connected with object under the state via some other members.

" connect into T word shape " and refer to so that the mode of stream branch connects, the angle of cross pipe-line is not carried out to any restriction.

" (contrast agent/normal saline) chamber " refers to the containers such as bottle, bag, is not limited to specific shape.

Adopt the present invention, can provide and can carry out implementing well complicated operation angiographic fluid loop suit and system in the case of the person that do not need operation technique.

Accompanying drawing explanation

Fig. 1 is the figure that schematically shows the fluid loop system of one embodiment of the present invention.

Fig. 2 A is the schematic diagram that represents the function of double linked one-way valve.

Fig. 2 B is the figure that schematically shows the switch of the part for keeping fluid loop suit.

Fig. 2 C is the figure that schematically shows the fluid loop system of another embodiment of the present invention.

Fig. 3 is the figure (suction of contrast agent) that represents a part for angiographic operation.

Fig. 4 is the figure (extrusion of contrast agent) that represents a part for angiographic operation.

Fig. 5 is the figure (removing air) that represents a part for angiographic operation.

Fig. 6 is the figure (operation of valve) that represents a part for angiographic operation.

Fig. 7 is the figure (extrusion of contrast agent) that represents a part for angiographic operation.

Fig. 8 is the figure (utilizing normal saline to rinse) that represents a part for angiographic operation.

Fig. 9 is the figure (appending flushing) that represents a part for angiographic operation.

Figure 10 is the figure (foundation of blood path) that represents a part for angiographic operation.

Figure 11 is the axonometric chart (decomposing state) that band opens wide the check valve of function.

Figure 12 is the cutaway view of the vertical of the check valve of Figure 11, represents the state after movable pin is given prominence to.

Figure 13 is the cutaway view of the vertical of the check valve of Figure 11, represents the state after movable pin is pressed.

A part of Figure 13 is amplified the enlarged drawing representing by Figure 14.

Figure 15 is illustrated in the axonometric chart that disposes the state of supporting member and movable pin etc. on housing main body.

Figure 16 is the in-built axonometric chart that represents housing main body.

Figure 17 is the axonometric chart of movable pin.

Figure 18 is the axonometric chart of supporting member.

Figure 19 is the axonometric chart of seeing lid from below.

Figure 20 is other the figure of an example etc. of pump installation representing for delivery of normal saline.

Figure 21 is the figure that schematically shows an example of rolling pump.

Figure 22 is the figure that schematically shows an example of piston pump.

Figure 23 is the cutaway view that represents another example of relief valve.

Figure 24 is the cutaway view that represents the another example of relief valve.

The specific embodiment

Below, with reference to the accompanying drawings of one embodiment of the present invention.In addition, in the following description, use the term that represents direction such as upper and lower, right, left, but this does not limit the present invention.In addition, sometimes do not distinguish contrast agent and normal saline, and contrast agent and normal saline are only called to " medicinal liquid " or " liquid ".

The fluid loop system 200 of the present embodiment shown in Fig. 1 is for for example cardia catheterization.This system 200 comprises that fluid loop suit 201(refers to aftermentioned) and be set with 201 contrast agent chambers 221 that are connected, normal saline chamber 223, changer 270 and syringe 251 with this loop.Fluid loop system 200 also comprise for keep syringe 251 and carry out the suction of medicinal liquid, the injection head 260(of extrusion only illustrates a part).

Particularly, the fluid loop of Fig. 1 suit 201 comprises the syringe pipeline 204 being connected with syringe 251, the contrast agent pipeline 205 being connected with contrast agent chamber 221, the normal saline pipeline 206 being connected with normal saline chamber 223, the changer pipeline 207 being connected with changer 270, the patient's pipeline 208 being connected with patient via conduit (not shown) and the base portion pipeline portion 210 being connected with above-mentioned each pipeline.

For material, length and the diameter of pipe that forms each pipeline 204～208, suitably select as long as consider to put on the pressure etc. of this pipe.In cardia catheterization process, because the high pressure with higher injects medicinal liquid, therefore, the part that is preferably applied in higher pressure is made up of the withstand voltage pipe of height.Similarly, double linked one-way valve 215A described later, 215B and

relief valve

202A, 202B etc. are also preferably high withstand voltage valve.

As shown in Figure 1, " base portion pipeline portion 210 " refers to the part being connected with above-mentioned each pipeline 204～208, its by managing, valve and adapter etc. form.In this example, be connected with syringe pipeline 204 at the upstream side of base portion pipeline portion 210, and be connected with patient's pipeline 208 in downstream.At the pars intermedia of base portion pipeline portion 210, from upstream side, be connected with contrast agent pipeline 205, normal saline pipeline 206 and changer pipeline 207 in turn.Above-mentioned pipeline 205～207 connects into T word shape with base portion pipeline portion 210 respectively.

In the present embodiment, contrast agent pipeline 205 utilizes respectively double linked one-

way valve

215A, 215B to be connected with base portion pipeline portion 210 with normal saline pipeline 206.As an example, double linked one-

way valve

215A, 215B(refer to aftermentioned) these two double linked one-way valves both can use identical double linked one-way valve, or also can use the different double linked one-way valve of function.In Fig. 1, as an example, use identical double linked one-way valve.

Double linked one-

way valve

215A, 215B are the valves (also with reference to Fig. 2 A) with following such function:

(i) aspirated in the situation of liquid at the upstream side towards base portion pipeline portion 210 (, syringe 251 sides), allowed that liquid flows to the direction of the upstream side towards base portion pipeline portion 210.

(ii) on the other hand,, for double linked one-way valve 215A, at the upstream side from base portion pipeline portion 210, towards liquid has been pushed in downstream, liquid is by this valve 215A side flow downstream.For double linked one-way valve 215B, in the situation that similarly having pushed liquid towards downstream, or push in the situation of liquid towards this valve 215B side from saline tube line 206 sides, allowed that liquid flows towards the direction of this valve 215B side to the direction towards downstream or from saline tube line 206 sides.

In addition, as shown in Figure 2 A, double linked one-

way valve

215A, 215B confined liquid from downstream upstream side flow and liquid towards pipeline 205,206 side flow.

In addition, in Fig. 1, dispose another valve 215A in the upstream of double linked one-way valve 215B, utilize this valve 215A to carry out upstream side flow of confined liquid, therefore, in this loop, normal saline can not aspirated towards upstream side.

As shown in Figure 1, changer pipeline 207 utilizes as the adapter that there is no valve function 217 of an example and is connected with base portion pipeline portion 210.Between this adapter 217 and double linked one-way valve 215B, be provided with threeway plug valve 213.But the allocation position of this threeway plug valve 213 may not be defined in this.As shown in Figure 2 C, also plug valve 213 can be configured in and refer to aftermentioned than air borne sensor 232(on patient's pipeline 208) position of trip on the lower.

In addition, as an example, threeway plug valve 213 by the threeway plug valve of a pipeline obturation of the direction of the bar along this threeway plug valve 213 in 3 coupled pipelines (for example can be also, under the state of Fig. 1, stop liquid to moving towards the not shown pipeline of downward-extension).Such threeway plug valve is applied to operation technique person as required by the liquid in pipeline to situations such as outside discharges.

Next, equipment of being connected with each pipeline 204～208 etc. is described.In addition, the said equipment can use known equipment in the past, therefore, omits detailed explanation.

As the syringe 251 being connected with syringe pipeline 204, can be that for example capacity is the syringe of tens of ml～200ml left and right, in addition, preferably syringe 251 is to implement the syringe that high pressure injects.Also can use as required the protective cover for covering syringe 251.Syringe 251 has the cylinder element of tubular and is inserted into sliding freely the piston component (plunger rod) in this cylinder element.In addition, piston component can be also the so-called piston component without bar type.

Can dismantle the not circumscribed of infusion appliance (injection head) 260 that syringe 251 is installed, but preferably can carry out the type that for example high pressure injects.Infusion appliance has as the motor of drive source and the pushing member that moves along fore-and-aft direction.By pulling pushing member, thereby pull the piston component of syringe and medicinal liquid is filled in syringe, on the other hand, by pressing pushing member, thereby the liquid in syringe being extruded to outside.

As an example, the contrast agent chamber 221 being connected with contrast agent pipeline 205 can be also the container that is filled with the ampuliform of contrast agent.Contrast agent chamber 221 also can use in the mode that hangs on not shown suspender, is connected with contrast agent pipeline 205 in the bottom of this contrast agent chamber 221.This connection also can be carried out via needle-valve.

As shown in Figure 1, below contrast agent chamber 221, dispose for detection of the such as infrared ray sensor of air borne sensor 231(of whether sneaking into air in the liquid in contrast agent pipeline 205).By utilizing this air borne sensor 231 to detect the air in pipeline, can detect the situation that medicinal liquid in chamber has not had.Below air borne sensor 231 and on contrast agent pipeline 205, dispose chamber 233 for drop, once drip in this chamber 233 from the contrast agent of contrast agent chamber 221, can in this chamber 233, flow in contrast agent pipeline 205.

As an example, the normal saline chamber 223 being connected with normal saline pipeline 206 can be also the bag-shaped container that is filled with contrast agent, in this example, the pressure-producing part 224(that normal saline chamber 223 also has for bag is pressurizeed is also called " inflating bag " by the normal saline chamber of such structure).This inflating bag can use commercially available inflating bag.Not circumscribed of pressure-producing part 224, but pressure-producing part 224 can be both the pressure-producing part that carrys out compressed bag using fluids such as air as drive source, can be also the pressure-producing part that carrys out compressed bag using motor etc. as drive source.On normal saline pipeline 206, also dispose the air borne sensor 231 identical with drop chamber 233 with the air borne sensor 231 of contrast agent pipeline 205 and chamber 233 for drop.In addition, be not limited to said structure for the mechanism that normal saline is pressurizeed, after narrate other structures.

On normal saline pipeline 206, be provided with the relief valve 202A of the switching for switching this pipeline 206.For a concrete structure example of relief valve 202A, narrate in the back with reference to Figure 11～Figure 19.Relief valve 202A has the external force of being subject to and mobile movable link 203, switches valve opening/valve closing state, thereby normal saline pipeline 206 is opened and closed by this movable link 203 is moved.In the present embodiment, as an example, be configured to, open valve 202A by pressing movable link 203, thereby make to flow to base portion pipeline portion 210 sides from the normal saline of inflating bag.

Next, equipment of being connected with changer pipeline 207 etc. is described.As an example, the changer 270 being connected with this pipeline 207 can detect blood pressure and monitor patient's pulse.As an example, the waveform of pulse can be presented on the display 271 being connected with changer 270.

On changer pipeline 207, be also provided with the relief valve 202B identical with the relief valve 202A of normal saline pipeline 206.But, relief valve 202B towards contrary with relief valve 202A.In this relief valve 202B, can become by pressing movable link 203 state of medicinal liquid to changer 270 side flow that make.

In addition,, in the example of Fig. 1, between the relief valve 202B of changer pipeline 207 and changer 270, dispose threeway plug valve 213.In addition, the movable link 203 of a relief valve 202A is configured to face mutually each other with the movable link 203 of another relief valve 202B.And, for corresponding with the structure of switch 300 described later so that from base portion pipeline portion 210 till the not identical mode of distance (L1, L2) of the movable link 203,203 of each valve be configured.

The top ends of patient's pipeline 208 is connected with the thinner pipe that is known as conduit (not shown), and this conduit is inserted in patient's blood vessel.In cardia catheterization process, catheter tip is transferred in such as coronary artery etc., injects contrast agent etc. in from this catheter tip to blood vessel.

Then, with reference to Fig. 2 B, explanation is used for a part for the fluid loop suit 201 that keeps Fig. 1 and suitably switches mobile switch 300 wherein.As an example, this switch 300 has the housing 310 of case shape.Switch 300 has the 1st maintaining part 306 of the part for keeping normal saline pipeline 206 and for keeping the 2nd maintaining part 307 of a part of changer pipeline 207.Above-mentioned maintaining part 306,307 is formed as concavity, and is configured to

relief valve

202A, 202B that each pipeline can be set therein.

Be provided with in housing 310 inside of switch 300 using motor for example as drive source and electromechanical press the drive division 301,301 of the movable link 203,203 of each valve 202A, 202B.This drive division 301,301 also can be configured to according to moving from the control signal of outside controller 350.The function of this controller 350 is not particularly limited, and also can have the function of controlling infusion appliance 260.

Switch 300 also has the 3rd maintaining part 308 of the part for keeping patient's pipeline 208 and for detection of there being bubble-free air borne sensor 332 in this patient's pipeline 208.As an example, this air borne sensor 332 can be the air borne sensor of ultrasonic type.Compared with air borne sensor of infrared-type etc., even the in the situation that of having sneaked into bubble in liquid under condition of high voltage, the sensor 332 of ultrasonic type also can be found above-mentioned bubble well, is favourable in this.

The using method of the fluid loop suit 200 of the present embodiment forming is as described above described below.

Fig. 3 represents original state, and this state is that the movable link 203,203 of

relief valve

202A, 202B is not pressed and not mobile state on both direction of liquid.In the time pressing the button (remove air button) of the regulation of infusion appliance 206 under the state of operation technique person at Fig. 3, this piston drive mechanism moves and pulls the piston component of syringe 251.Thus, making becomes negative pressure in syringe 251 and syringe pipeline 204, and the contrast agent in chamber 221 is via contrast agent pipeline 205 and double linked one-way valve 215A and be introduced in syringe pipeline 205,204 and syringe 251.

Then, as shown in Figure 4, press specifically syringe 251 piston component and by contrast agent from the interior extrusion of syringe 251.Fluid is delivered to base portion pipeline portion 210 sides by syringe pipeline 204, and is full of base portion pipeline portion 210 by two double linked one-way valve 215A, 215B.As shown in Figure 4, continue to carry out the extrusion action of this contrast agent, until contrast agent is forced into the degree of at least crossing double linked one-way valve 215B.

Then, as shown in Figure 5, press the movable link 203 of relief valve 202A and the movable link 203 of relief valve 202B and make two

valve

202A, 202B open wide.Press each movable link and automatically carry out this and open wide by the drive division 301,301 of switch 300.In this moment, the pressure-producing part 224 of normal saline chamber 223 is driven, and becomes the state that normal saline has been applied to authorized pressure (for example 300mmHg left and right).Thereby by valve 202A is opened wide, normal saline can flow towards base portion pipeline portion 210 from chamber 223 sides, and flows to patient's pipeline 208 sides by relief valve 202A and double linked one-way valve 215B.Contrast agent is further by threeway plug valve 213 and in adapter 217 branches of place, and a part of contrast agent flow is in patient's pipeline 208, and another part contrast agent flows into changer pipeline 207.Herein, because relief valve 202B opens wide, therefore, normal saline can be crossed relief valve 202B and flow towards changer 270.By so making to be full of normal saline in each pipeline, the bubble in pipeline can be discharged to outside.

Then, as shown in Figure 6, remove the pressing of movable link 203 of relief valve 202A to normal saline pipeline 206, thereby become that normal saline can not crossed relief valve 202A and the state of side flow downstream.In addition, in order not make contrast agent flow into changer 270 sides in ensuing contrast agent injection process, also remove the pressing of movable link 203 of the relief valve 202B to changer pipeline 207, thereby become that contrast agent etc. can not crossed relief valve 202B and to the mobile state of transducer side.

Then, make the piston drive mechanism action of infusion appliance 206 and press the piston component of syringe 251, thus, as shown in Figure 7 the contrast agent in syringe 251 is extruded towards patient.Particularly, contrast agent is delivered to the shooting position (coronary artery that is heart as an example etc.) of the regulation in patient body by contrast agent pipeline 204, base portion pipeline portion 210, patient's pipeline 208 and not shown conduit.

Then, injecting, contrast agent is complete and make after residual pressure in loop reduces fully, press as shown in Figure 8 normal saline pipeline 206 relief valve 202A movable link 203 and valve is opened wide again.With above-mentioned operation similarly, in this moment, become the pressure-producing part 224 that utilizes inflating bag and the state that normal saline has been applied to authorized pressure (for example 300mmHg left and right), therefore, as shown in Figure 8, normal saline is sent in base portion pipeline portion 210 and patient's pipeline 208 and rinses contrast agent.

Then, as required, as shown in Figure 9, also make the relief valve 202B of changer pipeline 207 open wide, thus, make normal saline flow to the region by transducer side than relief valve 202B, also utilize normal saline to rinse in this region.

Afterwards, as shown in figure 10, remove the pressing of movable link 203 of check-valves 202A to normal saline pipeline 206, thereby become that normal saline can not crossed valve 202A and to the state of base portion pipeline portion 210 side flow.Thus, remove and be positioned at than the pressurized state of the normal saline of the position of base portion pipeline portion 210 downstreams.Its result, becomes state as shown in Figure 10: set up blood path via patient's pipeline 208 and changer pipeline 207, can utilize changer 270 to detect blood pressure.

As described above, the fluid loop suit 201 of present embodiment comprises contrast agent pipeline 205, normal saline pipeline 206, syringe pipeline 204, patient's pipeline 208 and base portion pipeline portion 210, and connecting portion between the connecting portion between contrast agent pipeline 205 and base portion pipeline portion 210 and normal saline pipeline 206 and base portion pipeline portion 206 is provided with for be prescribed direction by the flow restriction of liquid double linked one-way valve 215A, 215B.Thereby operation technique person can be in the case of implementing contrast agent and send operations such as (Fig. 4) to the suction (Fig. 3) in syringe 251 and ensuing contrast agent without using well the operation of hands switching three-way plug valve.

In addition, in the fluid loop suit 201 of present embodiment, on normal saline pipeline 206, be provided with relief valve 202A.Especially, this relief valve 202A switches by pressing movable link 203 relief valve opening and closing, and therefore, such with for example threeway plug valve passing through, compared with the relief valve of type that torque rod switches switching, is easy to switch action.Particularly, have advantages of that the switch being easy to by having utilized the drivers such as motor automatically switches such.And, compared with the situation of torque rod, can implement at short notice the movement of such movable link 203.In addition, the structure of carrying out inaccessible stream in the function for utilizing as in the present

embodiment relief valve

202A, 202B itself, compared with the structure of inaccessible stream, can carry out more reliably obturation with for example flattening pipe.

And, in the structure of present embodiment, owing to carrying out inaccessible changer pipeline 207 well with relief valve 202B, therefore, even in the case of carrying out the injection of the such high pressure of cardia catheterization, the liquid that also can prevent high pressure flows into changer 270 sides, so can prevent changer 270 breakage, damage in possible trouble.

As an example, the fluid loop of present embodiment suit 201 also can be using contrast agent pipeline 205, normal saline pipeline 206, syringe pipeline 204, changer pipeline 207, patient's pipeline 208 and base portion pipeline portion 210 as a whole set of and disposable use.That is, fluid loop suit 200 also can repeatedly use, but for preventing the objects such as infectious disease, can be also, after a patient is used, is replaced by new fluid loop suit 201.In this case, can be still to comprise that the drop chamber 233 of normal saline pipeline 206 and contrast agent pipeline 205,233(also can only comprise one wherein) interiorly as disposable.

In addition, the fluid loop system of present embodiment is the system that uses aforesaid liquid loop suit 200, and this fluid loop system comprises: infusion appliance, and it carries out suction and the injection (sending) of liquid for carrying syringe 251; And switch 300, it is for automatically switching the switching of pipeline of regulation of fluid loop suit 200.Adopt such system, operation technique person can not need suitably to carry out in the situation of the operation of carrying out switching three-way plug valve a series of injection action of contrast agent and normal saline, as required, can also automatically carry out all operations.

The present invention is not limited to the embodiment of above-mentioned explanation.For example, as extruding the structure of normal saline, also can substitute inflating bag, push flat tube continuously and make normal saline in pipe to the mobile pipe pump of prescribed direction (Japanese: チュー Block Port Application プ) and use.Or, can use piston component by making small-sized syringe to move back and forth and the device that repeatedly carries out suction and the extrusion of normal saline, this device can be also the device that utilizes cam mechanism and force application component (for example spring).

an object lesson of relief valve

Relief valve 202A, the 202B that particularly, can in the fluid loop system 200 of Fig. 1, use can be also following such relief valves.In addition, below, a structure example of relief valve is described with reference to Figure 11～Figure 19, but the present invention is not limited to following operation.In addition, below, the valve that is equivalent to relief valve 220A, 220B is described as " check valve 1 ".Movable link 223 is equivalent to " movable pin 60 ".

In addition, check valve shown in Figure 11～Figure 19 for to the state of only allowing the check valve that medicinal liquid moves to a direction with allow that the opening-wide state that medicinal liquid moves to both direction switches, but as the relief valve of Fig. 1, also can for to the blocked state of the movement of blocking liquid completely with allow that the opening-wide state (direction of liquid flow depends on the pressure differential of liquid) that liquid moves to both direction switches.

The check valve 1 of the present embodiment shown in Figure 11 mainly uses in therapeutic medical fluid loop.Especially, this check valve 1 has higher withstand voltage properties, can be applied to for example cardia catheterization.As shown in Figure 11, Figure 12, check valve 1 comprises: shell 50, and it forms valve chamber 10; Discoideus spool 25, it is configured in this valve chamber 10; Movable pin 60, it remains in the mode that can move in a part for shell 50; And lid 70, it is installed on shell 50 to cover the mode of this movable pin 60.

This check valve 1 is connected with discharge pipe P2 with supply pipe P1.Substantially, check valve 1 only allows that medicinal liquid flows towards discharge pipe P2 from supply pipe P1, only during pressing movable pin 60, allows that medicinal liquid flows to both direction.In addition, the mobile direction of medicinal liquid depends on the pressure of the medicinal liquid in pipe P1, P2, therefore, under authorized pressure condition, can be also the flow direction except above-mentioned flow direction.As an example, under the hydraulic pressure of the P2 side condition such higher than the hydraulic pressure of P1 side, do not pressing under the state of movable pin 60, medicinal liquid does not flow, only during pressing movable pin 60, medicinal liquid from P2 side towards P1 side flow.

As an example, shell 50, movable pin 60, lid 70 and the each part of supporting member described later 21 can be resin forming products, but are not limited thereto.

As shown in Figure 11, Figure 12, shell 50 has sealing (closure) member 30 of the housing main body 40 being connected with supply pipe P1 and the general cylindrical shape shape being connected with discharge pipe P2.In the time that closure member 30 is installed on to housing main body 40, between two members, form valve chamber 10.The upstream side of valve chamber 10 be formed with for by medicinal liquid to the inlet portion 11(Figure 12 supplying with in valve chamber), be formed with the export department 13 for medicinal liquid is sent to outside in the downstream of valve chamber 10.

Valve chamber 10 is substantial transverse cylindric such shapes, and the downstream of this valve chamber 10 becomes towards export department's 13 sides removes such taper and sectional area diminishes gradually.The spool 25(disposing in valve chamber 10 for inlet portion 11 is opened and closed refers to aftermentioned), refer to aftermentioned for the supporting member 21(that presses this spool 25).

Describe the shape of housing main body 40 in detail with reference to Figure 15.As shown in figure 15, housing main body 40 has: the main part 41 of cylindric (example), and it is for forming valve chamber 10; And the pipe maintaining part 48 being connected with supply pipe P1, this pipe maintaining part 48 is cylindric parts thinner than the main part of trip side provided thereon 41.Not circumscribed of the material of housing main body 40, its both can for can see valve inner such have can perspectivity material, can be also the material of non-perspectivity.

The end of supply pipe P1 is inserted into the inside of pipe maintaining part 48.Even also can not make pipe come off for hydraulic pressure rises, utilize known method in the past that supply pipe P1 is connected in pipe maintaining part 48 with sufficient intensity.In order workability to connect well supply pipe P1, be formed with one or more ribs in pipe maintaining part 48.In this example, be formed with respectively each 1

rib

49f, 49f extending radially in the upper and lower of cylindrical portion 49.

As shown in Figure 15, Figure 16, main part 41 is to make cylinder be made as laterally such shape, disposes spool 25(therein with reference to Figure 11) and for the supporting member 21(that presses this spool 25 for above-mentioned member, refer to aftermentioned).As shown in figure 16, in a part of the wall 41h in main part, be formed with the inlet portion 11 for supplying with medicinal liquid.

In this example, on inlet portion 11, be provided with so that the recess 11a(that the mode of wall 41h local dent forms with reference to Figure 14 and Figure 16), this recess 11a is connected with stream 11c.As shown in figure 14, the boundary member between recess 11a and stream 11c is formed with inclined plane 11b.In addition, as shown in figure 16, the contour shape of recess 11a is circular, as an example, is formed with 3 rib 43Ra in recess 11a.Above-mentioned rib 43Ra is formed as radial in mutual equally spaced mode.The effect (referring to aftermentioned) of the front surface of rib 43Ra performance supporting spool 25.

As shown in figure 16, around inlet portion 11, be formed with multiple supporting rib 43Rb of the peripheral part for supporting spool 25.As an example, 6 supporting rib 43Rb are configured to radial in mutual equally spaced mode.

As shown in figure 11, as an example, spool 25 is discoideus and has flexible (explanation does not have flexible spool again) below.The thickness of spool can be uniform.The material of spool can be for example organic silicon rubber, and as an example, the hardness of the material of spool is in the scope of 5 °～90 °, preferably in the scope of 40 °～80 °, further preferably in the scope of 60 °～80 °.Spool 25 has diameter that can inaccessible inlet portion 11 degree.

As shown in figure 18, have for pressing the supporting member 21 of spool 25 ring-type frame 27, be disposed at the central part of frame 27 general conical (cone shape) press section 23 and press section 23 is connected with frame 27 and supports 4 (example) supporting arms 26 of press section 23.Press section 23 is outstanding towards the direction of spool 25, and press by its top ends near the central part at the back side of spool 25 press section 23.

Adopt the such bearing method based on supporting member 21, unfettered near the peripheral part of spool 25, therefore can freely carry out strain.Substantially, spool 25 as shown in Figure 12 shutoff inlet portion 11 and stop medicinal liquid from valve chamber 10 towards supply pipe P1 side flow.On the other hand, supplying with medicinal liquid in the situation that from supply pipe P1, under the effect of the hydraulic pressure of medicinal liquid, making the peripheral part strain of spool 25, allowing that thus medicinal liquid flow in valve chamber 10.

Again turn back to the explanation of supporting member 21.As shown in figure 18, even also this bubble can be discharged well outside valve chamber for sneaked into bubble in valve chamber time, the shape of the each several part of supporting member 21 is made as fillet shape or taper.Particularly, be formed with mild rounded shapes at the flow direction upstream side of each supporting arm 26.In addition, for frame 27, also become more and go and the thinner such cone-shaped of the thickness of slab of frame towards flow direction upstream side.Adopt such structure, compared with the situation that is simple rectangle with the cross sectional shape of supporting arm 26, frame 27, have advantages of to be easy to make bubble side flow is so downstream.

In addition, as the operation of removing bubble, not circumscribed, for example, can be also, so that being positioned at the mode of top, discharge pipe P2 side lifts whole check valve 1, user uses the instrument of hands or regulation to beat valve lightly and bubble is rushed for to downstream.In the case of the material of shell 40 be transparent, whether Visual Confirmation remains bubble in the enclosure well.And, be formed as going and taper that sectional area diminishes gradually, can making bubble rush for well outside towards export department 13 in the downstream of valve chamber 10 as in the present embodiment.

As the variation of said structure, also can not make each supporting arm 26 is rounded shapes, is more to go and the thinner such taper of thickness of slab towards flow direction upstream side but make the cross sectional shape of each supporting arm 26.In addition, also can on frame 27, rounded shapes be set.

Referring again to Figure 12.Supporting member 21 is clipped in structure supported between housing main body 40 and closure member 30 for its peripheral part.Adopt such structure, needn't be provided for special part or the structure of fixed bearing member 21.In addition, in order to prevent that supporting member 21 from, in the interior rotation of valve chamber 10, as shown in Figure 15, Figure 18, can be also, on the peripheral part of frame 27, form projection 27a, the length direction groove 43g in this projection 27a and housing main body is fastened.

In addition,, in order not make bubble be trapped in valve chamber 10, in the present embodiment, the end shape of movable pin 60 also has the shape of regulation, and this is narrated in the back.

Then, movable pin 60 and the structure portion that disposes movable pin 60 are described.As shown in figure 12, the spatial accommodation 15 that disposes movable pin 60 refers to aftermentioned by the 45(of urceolus portion of housing main body 40) and the lid 70 that is installed on urceolus portion 45 form.

As shown in Figure 12, Figure 19, lid 70, on the whole for roughly there being bottom tube-like, in this example, has smooth upper surface portion 71 and the periphery extended surrounding wall portion 73 cylindraceous downwards from upper surface portion 71.Be provided with 1 peristome in upper surface portion 71, a part for movable pin 60 is given prominence to outside through this peristome.As shown in figure 19, be formed with protuberance 76(as an example at the inner surface of surrounding wall portion 73, cross sectional shape is rectangle).In this example, be provided with each 1 protuberance 76 in the both sides of surrounding wall portion 73.

In the present embodiment, though in use to medicinal liquid apply cover compared with high pressure 70 and movable pin 60 also can not come off, lid 70 is installed on to housing main body 40 with sufficient intensity.As the method for fixed cap 70, for example, can utilize bonding agent or welding etc., but be preferably mechanical fixing means.As mechanical fixing means, for example, can be that the protuberance of a member is embedded in to the recess of another member, is threadedly engaged with each other or utilizes screw element or the such fixture appending of steady pin to fix the method for two members threaded portion.

In the present embodiment, as an example, be configured to, the protuberance 76(of lid 70 inner side is with reference to Figure 19) with the groove 45g(of L word of periphery of urceolus portion 45 that is formed at shell with reference to Figure 14) fasten.Adopt such fixed form, can be with sufficient intensity and positional precision fixed cap 70 well.In addition, if desired, also can after being installed on to urceolus portion 45, lid 70 utilize bonding agent etc. further to fix.

Then, movable pin 60 is described.As shown in figure 17, as an example, movable pin 60 has the axial region 61 of circular cross sectional shape and is formed at the flange part 67 of a part for axial region 61.Form and can have the service portion 63 connecting with spool 25 in the tip side (lower end side) of axial region 61.

As shown in figure 14, service portion 63 is formed as wedge shape in the mode that can make the peripheral part of spool 25 lift from wall 41h.Particularly, service portion 63 has the protuberance 63a that enters between spool 25 and wall 41h and is formed at the par 63b in the downstream of this protuberance 63a.Preferably, this par 63 is configured to, and under the state above movable pin 63 as shown in the dotted line of Figure 14 is positioned at, this par 63 is positioned at the face same with the upper surface of valve chamber 10 or more outstanding than the upper surface of valve chamber 10.Even if in the time that this tabular surface 63 is positioned at the position than the upper surface depression of valve chamber, bubble is likely stranded in this part, but by adopting said structure, can make bubble side flow downstream well.

Referring again to Figure 17, on axial region 61, be formed with for O-ring seals R1(and refer to aftermentioned) the endless groove 61c that embeds.Flange part 67 is formed at than the top side's of this endless groove 61c position, is formed with the bullport 67a of 4 circular shapes on flange part 67.The upper end of axial region 61 is the parts of pressing for the mechanism of user or regulation, and the bight of the periphery of upper end is rounded shapes.

As shown in Figure 5, movable pin 60 is disposed in the urceolus portion 45 of housing main body 41.Be formed with inner cylinder portion 46 in the inner side of

urceolus

45,4 wall sheet 46a that this inner cylinder portion 46 is circular shape by cross sectional shape form.When movable pin 60 being arranged to urceolus portion 45 when interior, become the state of each wall sheet 46a through each bullport 67a of movable pin.Each wall sheet 46a plays a role as the member of the motion on above-below direction of guiding movable pin 60, and performance prevents the effect that movable pin 60 rotates around central axis.

The movable pin 60 forming is as described above configured to like that and can moves up and down as shown in Figure 12 and Figure 13.First, illustrate that movable pin 60 is positioned at the state of Figure 12 of the 1st position (top position).

Under this state, be disposed at movable pin 60 flange part 67 below the effect of the application of force of helical spring 68 under, movable pin 60 is lifted upward, thereby makes the upper surface of flange part 67 press on the inner surface that covers 70.Flange part 67 is formed as the diameter that its diameter is greater than the peristome that covers 70, and therefore, movable pin 60 can not deviate from outside lid.In the present embodiment, the upper surface of flange part 67 is all that tabular surface and two members are that face contacts with the inner surface of lid 70, and therefore, lid 70 can be subject to the power from flange part 67 equably.

In the time that movable pin 60 is positioned at the 1st position, the service portion 63 of movable pin 60 leaves spool 25, the inaccessible inlet portion 11 of spool 25.Under this state, check valve 1 is as only allowing that medicinal liquid plays a role from the check valve of supply pipe P1 side direction discharge pipe P2 side flow.In addition, as mentioned above, the mobile direction of medicinal liquid depends on the pressure of the medicinal liquid in pipe P1, P2, for example, in such fluid loop at the hydraulic pressure of P2 side higher than the hydraulic pressure of P1 side, use valve 1, under the state not being pressed at movable pin 60 medicinal liquid flow, only during movable pin 60 is pressed medicinal liquid from P2 side towards P1 side flow.The check valve 1 of present embodiment is not such by the mobile check valve that is defined as specific direction of medicinal liquid.

On the other hand, in Figure 13, movable pin 60 is pressed downwards and is moved on to the 2nd position (lower position).Movable pin 60 overcomes the application of force of helical spring 68 while is pressed, move on at movable pin 60 under the state of position of Figure 13, the service portion 63 of movable pin 60 enters into (Figure 14) between spool 25 and wall 41h and makes the peripheral part strain of spool 25, makes thus inlet portion 11 open wide.Its result, can make medicinal liquid to both direction mobile (medicinal liquid flows and depends on the hydraulic pressure in P1, P2 to which direction).In the time stopping pressing movable pin 60 under the state at Figure 13, become following state: under the effect of the application of force of helical spring 68, movable pin 60 turns back to the 1st position again, and spool 25 returns to original shape and inaccessible inlet portion 11, and valve 1 plays a role as check valve.

As mentioned above, in the check valve 1 of present embodiment, by pressing movable pin 60, the suitably connected state of transfer valve.The method of pressing movable pin 1 is not particularly limited, for example, can be both user hands or with regulation instrument press movable pin 60, can be also to press movable pin 60 by the mechanism stipulating.

Append the assembled state of explanation valve with reference to Figure 12, Figure 13, O-ring seals R1 is embedded to movable pin 60, thus, can guarantee the sealing between movable pin 60 and inner cylinder portion 46.In the situation that being this spline structure, be subject to from the power of O-ring seals R1 and radially toward the outer side inner cylinder portion 46 applied to power, but in the present embodiment, as shown in figure 13, be configured to, the top that forms each wall sheet 46a of inner cylinder portion 46 embeds the engaging groove 71g of the inner surface that is formed on the upper surface portion 71 of covering 70.Thereby, can prevent the tip side expansion of inner cylinder portion 46, its result, in use, also can keep the sealing based on O-ring seals R1 well.

The concrete material that forms each part of check valve 1 is not particularly limited, and as an example, movable pin 60 can be also the polyacetal resin that sliding is good (POM).As an example, the part that forms shell 50 can be also polycarbonate resin (PC).In addition, as required, also can be in the fine convex-concave shape of the upper formation of the outer peripheral face of spool 25 (especially, the face relative with wall 41h).

As described above, the check valve 1 of present embodiment can temporarily be removed by movable pin 60 is moved the function as check valve.And this movable pin 60 is disposed in spatial accommodation 15, movable pin 60 is not can form from lid 70 modes of deviating from.Thereby even if the pressure rise of medicinal liquid and such towards being applied with larger power to this pin is extruded to movable pin 60 in use also can bear this power by lid 70 via flange part 67, therefore movable pin 60 can not come off.Therefore, the check valve 1 of present embodiment can be tackled the high pressure injection of medicinal liquid well.

In addition, in the present embodiment, use mechanical fixed part (45g, 76) that lid 70 is fixed on shell 50.Therefore, fix compared with the situation of covering 70 with for example only using bonding agent, can be with sufficient intensity and positional precision fixed cap 70 well.

In addition, in the present embodiment, be formed with recess 11a as shown in Figure 16 at the inlet portion 11 of valve chamber 10, therefore, only depend on spool 25 is out of shape slightly, just can make reliably inlet portion 11 open wide.,, in the case of not forming such recess 11a, for inlet portion 11 is opened wide, need to make spool 25 be deformed into and make the central unlimited degree of stream 11c.On the other hand, adopt the structure of present embodiment, as shown in figure 16, the moment of being out of shape at the peripheral part of spool 25, become the state that recess 11a is opened wide and be connected with recess 11a stream 11c is also opened wide, therefore, can carry out the switching of inlet portion 11 by the distortion slightly of spool 25.

On the other hand, in the situation that being so provided with recess 11a, the hydraulic pressure that puts on the back side of spool 25 in the time using valve can become problem.; although according to use valve 1 in which type of fluid loop, this problem is also different; but can be susceptible to: even if the hydraulic pressure in use in valve chamber 10 becomes in very high such situation, under the effect of this hydraulic pressure, also spool 25 can be pressed on to recess 11a side.In this case, if supporting rib 43Ra is not set in recess 11a, likely becomes spool 25 and be bonded at the upper such state of recess 11a.Under this state, even the service portion of movable pin 60 63 is pressed between spool 25 and wall 41h, also there is the probability that can not make inlet portion 11 open wide fully.To this, if be formed with supporting rib 43Ra in recess 11a as present embodiment, can prevent from becoming spool 25 and be bonded at the upper such state of recess 11a, thereby can come well inlet portion 11 to be opened and closed by operate mobile pin 60.In addition, supporting rib 43Ra may not be defined in shape as shown in Figure 16, also can be formed as the projection of the arbitrarily shape outstanding from the bottom of recess 11a.

Above, with reference to the accompanying drawings of one embodiment of the present invention, but the present invention is not limited to foregoing, and can carry out various changes.

For example, above, illustrated that peripheral part that spool 25 has flexible and a spool 25 can carry out the example of strain, but that spool 25 also can not have is flexible.For example, can be also, spool be there is no flexible tabular member, and is configured to and can opens wide in the position of (a) inaccessible inlet portion 11 and (b) displacement between the position of inlet portion 11.In the situation that having pressed movable pin 60, this spool displacement, to the position of (b), makes inlet portion 11 open wide thus.In this case, supporting member 21 also can be configured to, and at least its press section 23 has elasticity, flexibly shrinks the displacement of allowing above-mentioned spool by this press section.

The shape of the press section of supporting member is not limited to taper shape, for example, can be also truncated cone-shaped, by being made as such shape, can press spool with larger area.

If not make the mode that movable pin 60 is deviate from, with sufficient intensity, lid 70 is fixed on to shell 50 using when check valve 1, cover 70 shape and be not particularly limited, also can be made as bottom tube-like shape in addition.

As movable pin 60, if thereby being subject to from outside power and the mobile member that spool 25 is moved, not circumscribed of shape, also can have pin shape shape in addition.In the situation that movable pin 60 is made as pin shape as in the present embodiment, its cross sectional shape is not limited to circle, can be also rectangle and polygon etc.In addition, as the structure of deviating from for preventing movable pin 60, in the above-described embodiment, be connected to the structure of the upper surface that covers 70 exemplified with the flange part 67 of movable pin 60, but being not limited to flange for the structure that prevents from deviating from, can be also simple projection of being located at the periphery of movable pin etc.In addition, in order to make user be easy to press movable pin 60 with hands, also can the lid (not shown) appending be installed at the protuberance of movable pin 60.

In above-mentioned example, shell 50 is made up of housing main body and closure member 30, but as long as shell is the member that forms valve chamber 10, its part number, not circumscribed of shape.

Spool 25 is not limited to circular contour shape, also can have the contour shapes such as ellipse, rectangle, polygon.In addition, above, the thickness of having imagined spool 25 is constant spool, but the thickness of spool 25 also can be according to the difference at position and difference.

other functions of valve

And the check valve of other embodiments of the present invention can be also member as following.

With a check valve that opens wide function, wherein, the check valve that this band opens wide function comprises: shell, and its formation has the valve chamber of the entrance and exit of liquid; Spool, its mode with the above-mentioned entrance of obturation is disposed in above-mentioned valve chamber, and be configured to for this entrance is opened wide can strain or can displacement; Movable link, it remains on above-mentioned shell in the mode that can move, be connected to above-mentioned spool by moving, so that this spool strain or displacement, in the time pressing above-mentioned movable link, the medicinal liquid of the amount corresponding with the amount of movement of this above-mentioned movable link is forced into outside valve chamber via above-mentioned outlet.

With reference to Figure 13, this valve is described.This valve is configured to, in the time pressing movable pin 60, by a small amount of medicinal liquid corresponding with the amount of movement of movable pin 60 from the interior extrusion of valve chamber 10.On the other hand, in the time stopping movable pin 60 to press, movable pin 68 turns back to original position under the effect of helical spring 68, and the temporary transient distortion of spool 25 and can be again to the interior supplementary medicinal liquid of valve chamber 10.Like this, the function that extrudes a small amount of medicinal liquid by operate mobile pin 60 is effective while especially injecting contrast agent in cardia catheterization process for example.; in this checking process; conduit to be inserted in patient's blood vessel; but in the situation that check valve has function as described above; can export a small amount of contrast agent from the top of conduit; its result, for example, can implement catheter tip to be currently located at the confirmation that carry out at which position in patient body well.

about the pump installation of PIT formula

In medicinal liquid circuit system of the present invention, the pressure-producing part 224(Fig. 1 that also can not use normal saline to use), and use the such pump installation 226 of Figure 20.In Figure 20, only show a part for medicinal liquid circuit system.For the structure of swimming on the lower than threeway plug valve 213, can use the structure identical with Fig. 1.

This pump installation 226 is for example pump installations of No. 3626264 disclosed such mode of Japan Patent.Pump installation 226 comprises the main part 227 for carrying small-sized syringe 226a and the piston drive mechanism (not shown) for making the piston component of this syringe 226a advance, retreat.

In order to utilize this pump installation 226 to realize the conveying of normal saline, in the structure of Figure 20, the part in loop is changed and is obtained by the loop of Fig. 1.Particularly,

substitute check valve

215A, 215B and used

adapter

215C, 215D, between two adapters, dispose check valve V-1.In addition,, as shown in the warning triangle of Figure 20, check valve V-1 is configured to allow medicinal liquid flowing of side and do not allow that medicinal liquid flows to reciprocal downstream.V-1 is same with check valve, also determines the flow restriction direction of other check valve according to the direction of the warning triangle of Figure 20.

On the pipeline 205 that adapter 215C is connected with contrast agent chamber 221, from connecting adapter 234 near disposing successively a side of chamber 221, chamber 233, air borne sensor 231 and check valve V-2 for drop.In addition, the configuration of above-mentioned composed component 234,233,231 can suitably be changed.

The pipeline 206 that adapter 215D is connected with normal saline chamber 223 is divided into two pipelines on the way, and one of them pipeline is pipeline 206, and another pipeline is the pipeline 209 going towards pump installation 226.As shown in figure 20, on pipeline 206, dispose two check valve V-3, V-4.

Between adapter 215D and threeway plug valve 213, be also provided with 1 check valve V-5.In addition, also can omit check valve V-5.In the situation that being provided with check valve V-5, also can be using the loop of swimming on the lower than this check valve as disposable.Or, no matter have or not check valve V-5, all using the loop of swimming on the lower than adapter 215D as disposable.

In addition, can be also, on threeway plug valve 213, be connected with drug liquid tube (not shown), inject medicinal liquid via this drug liquid tube towards patient.

In the medicinal liquid circuit system of the Figure 20 forming as described above, make the piston component advance and retreat of small syringe 226a mobile by pump installation 226 is worked, thereby can repeatedly carry out following operation: (i) aspirate normal saline and (ii) spray normal saline from small syringe 226a in syringe 226a from chamber 223.Thus, can be to patient's saline injection.

In addition,, in the structure of Figure 20, as an example, be provided with the load sensor 223S of the weight for measuring normal saline chamber 223.The value that not shown control device is converted to after load according to the output valve of this load sensor 223S or by this output valve judges whether this value is the setting value following (, whether the surplus of normal saline is that a certain reference value is following) of regulation.And, in the case of below judging the setting value for stipulating, the warning (for example putting bright light, display message, output sound or voice etc.) that operation operator is sent to regulation.

Certainly,, in the medicinal liquid circuit system of the embodiment of Fig. 1, also can use load sensor 223S as described above.

In order to omit air borne sensor 231 in the medicinal liquid circuit system of for example Figure 20, as an example, can, at drop with using the disclosed such adapter with floating spool of Japanese kokai publication hei 9-117505 in chamber, thus, can prevent inclusion of air patient pipeline side.In addition, can be also, judge according to the position of this spool whether drop chamber becomes empty, the control that stops injecting etc. in the time becoming empty.

The medicinal liquid circuit system of Figure 20 is the system with following fluid loop suit.A therapeutic medical fluid loop suit, it is applied to angiography, and wherein, this fluid loop suit comprises: contrast agent pipeline, it is connected with contrast agent chamber, normal saline pipeline, it is connected with normal saline chamber, syringe pipeline, it is connected with syringe, patient's pipeline, it is for carrying contrast agent or normal saline towards patient, and base portion pipeline portion, it is connected with above-mentioned each pipeline, and connect into respectively T word shape with above-mentioned contrast agent pipeline and above-mentioned normal saline pipeline, and, this fluid loop suit also comprises: a, the 1st valve member (V-1, V-2), it is configured to, (i) in the case of liquid has been aspirated towards the upstream side of above-mentioned base portion pipeline portion, contrast agent flows in above-mentioned base portion pipeline portion in contrast agent pipeline, in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed, liquid flows in the direction by this valve member, b, the 2nd valve member (V-1), in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed, the 2nd valve member (V-1) is allowed liquid flowing in the direction, and does not allow reverse flowing, and c, the 3rd valve member (V-3, V-1), utilizing for delivery of the parts of normal saline in the time that above-mentioned normal saline chamber is carried normal saline, the 3rd valve member (V-3, V-1) allow normal saline to patient's pipeline side flow, and do not allow normal saline to syringe pipeline side flow.

about rolling pump device

The parts of sending medicinal liquid as medicinal liquid chamber is pressurizeed, also can use the such rolling pump of Figure 21 470.As an example, this pump 470 has to clamp a pair of pressing member 471,472 that the mode of chamber 223 configures.By making a pressing member in pressing member 471,472 near another pressing member, can press the chamber 223 between two members 471,472, thus, the medicinal liquid of chamber 223 inside can be extruded.

For concrete structure, can suitably design and even change,, as an example, can be also, two members couple together at 474 places, articulated section, and a member can rotate with respect to another member.In order to make a member near another member, also can be provided with roller 476.Roller 476 can be configured to, and on one side around center of rotation 476a rotation (drive source both can be set, drive source also can be set), moves like that downwards as shown on one side, thereby pressing member 471 is pressed towards another member 472 shown in arrow.

about pump installation in the form of piston

And, also can use the such pump in the form of piston 480 of Figure 22.This pump 480 has two syringes 481,486 that are connected in series, the top ends of the syringe 481 in front with pipeline 209(with reference to Figure 20) be connected.In syringe 481 forwardly, dispose the mobile shorter pad 482a that can slide, be formed with projection 485 at the back side of pad 482a.This projection 485 is brought into play the effect that the movable range in the time that pad 482a rearward moves is limited, but not necessarily will form this projection 485.

The top of the syringe 486 at rear slenderly forms and can be inserted into the through hole forming on the containment member 482b of syringe 481 forwardly.Thus, be configured to, the liquid in the syringe at rear 486 or gas can be delivered in the syringe 481 in front and from this syringe 481 this liquid of interior suction or gas.In addition,, on this pump 480, be also provided with the mobile driver part (not shown) of piston component advance and retreat of the syringe 486 for making rear.

In medicinal liquid circuit system of the present invention, as mentioned above, also can implement with the pump installation 480 of the such type of Figure 22 suction and the injection of normal saline.

other structures of relief valve

As relief valve 202A, the 202B of Fig. 1, also can use the relief valve with the such structure of Figure 23.In addition, be noted that in Figure 23 (with Figure 24 described later), a part of structure has been carried out schematically describing.

The relief valve 401A of Figure 23 have as form the member of shell 410, hollow main component 411, the pipe connecting elements 412 being connected with the bottom of main component 411 and for the lid member 413 of the upper end open portion of inaccessible main component 411.In addition, the internal configurations of main component 411 have with can be upward with below the shaft component 425 that configures of mobile mode.On shaft component 425, be provided with two containment members 428,429, in addition, in a part for shaft component 425, be formed with flange part 425f.

Shaft component 425 is by the helical spring S1 application of force (Figure 23) upward, and under this state, flange part 425f is pressed against containment member 429.Under this state, fluid can be from the 412a of lower ending opening portion of connecting elements 412 towards the side of main component 411 peristome 411a(or its rightabout) flow.

On the other hand, in the time that press the end of the shaft component 425 that the central part that certainly covers member 413 is given prominence to upward, flange part 425f can move downwards, therefore make the stream (detailed construction is not shown) of fluid open wide, thus, fluid can be from the 412a of lower ending opening portion of connecting elements 412 towards the side of main component 411 peristome 411a(or its rightabout) flow.In addition,, for the stream of fluid, for example, also can be formed by the groove forming along the length direction of shaft component 425 on the peripheral part at shaft component 425 part for stream.

As mentioned above, in medicinal liquid circuit system of the present invention, also can use the such relief valve 401A of Figure 23.

In addition, can also use the such relief valve 401B of Figure 24.The relief valve 401B of Figure 24 have as form the member of shell 410, hollow main component 411 and for the lid member 413 of the upper end open portion of inaccessible main component 411.The internal configurations of main component 411 have with can be upward with below the shaft component 425 that configures of mobile mode.On shaft component 425, be provided with 1 containment member 429 and O-ring seals R1.In the upper end of certainly covering the shaft component 425 that member 413 gives prominence to upward, the pressing member 416 that is formed with stream in inside is installed.Pressing member 416 has the side peristome 416a of the gateway that forms fluid.

Similarly, in the relief valve 401B so forming, also do not pressing under the state of shaft component 425, under the effect of the application of force of helical spring S1, flange part 425f is pressed against containment member 429, its result, fluid can be from the 411a of lower ending opening portion towards the side of pressing member 416 peristome 416a(or its rightabout) flow.On the other hand, in the time of pressing cover members shaft member 425, the stream (detailed construction is not shown) of fluid is opened wide, fluid can flow thus.

other structures

Above, with reference to the accompanying drawings of an example of the present invention, but in circuit system of the present invention, can apply known various structure, device, equipment in the past.For example, in order to prevent that bubble from injecting patient, the structure that is known as Octopus pipe (Japanese: タコ pipe) also can be set in the position arbitrarily in loop.As an example, in the structure of Fig. 1, also can between adapter 217 and air borne sensor 232, Octopus pipe be set.In addition, " Octopus pipe " refers to inside and is formed as the such jut (profile can have any shape) of head cavity, Octopus, for catching at the mobile next bubble of fluid circuit.Thereby preferably the outstanding mode in Octopus Guan Yixiang vertical top configures.In addition, in order not make the posture variation of Octopus pipe, preferably Octopus pipe is arranged in circuit system, pipeline (pipe) towards stable position.

description of reference numerals

1, check valve; 200, fluid loop system; 201, fluid loop suit; 202A, 202B, relief valve; 203, movable link; 205, contrast agent pipeline; 206, normal saline pipeline; 207, changer pipeline; 208, patient's pipeline; 209, pipeline; 210, base portion pipeline portion; 213, threeway plug valve; 215A, 215B, double linked one-way valve; 215C, 215D, adapter; 223, normal saline chamber; 223S, sensor; 226, pump installation; 226a, syringe; 227, main part; 231,232, air borne sensor; 251, syringe; 260, infusion appliance; 270, changer; 300, switch; 301, drive division; 332, air borne sensor; 401A, 401B, relief valve; 410, shell; 411, main component; 412, pipe connecting elements; 413, lid member; 428,429, containment member; 470, rolling pump; 476, roller; 480, piston pump; 481,486, syringe; V-1～V-1, check valve; S1, helical spring.

Claims

1. a therapeutic medical fluid loop suit, it is applied to angiography, wherein,

This fluid loop suit comprises:

Contrast agent pipeline, it is connected with contrast agent chamber;

Normal saline pipeline, it is connected with normal saline chamber;

Syringe pipeline, it is connected with syringe;

Patient's pipeline, it is for carrying contrast agent or normal saline towards patient; And

Base portion pipeline portion, it is connected with above-mentioned contrast agent pipeline, normal saline pipeline, syringe pipeline and patient's pipeline, and connects into respectively T word shape with above-mentioned contrast agent pipeline and above-mentioned normal saline pipeline,

And this fluid loop suit also comprises:

The 1st valve member, it is disposed at the connecting portion between above-mentioned contrast agent pipeline and above-mentioned base portion pipeline portion, the 1st valve member is configured to, (i) in the case of liquid has been aspirated towards the upstream side of above-mentioned base portion pipeline portion, contrast agent flows in above-mentioned base portion pipeline portion in pipeline, in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed, liquid is by this valve member and to flowing towards the direction in downstream from the upstream side of above-mentioned base portion pipeline portion;

The 2nd valve member, it is disposed at the connecting portion between above-mentioned normal saline pipeline and above-mentioned base portion pipeline portion, the 2nd valve member is configured to, in the case of liquid by the upstream side from above-mentioned base portion pipeline portion towards downstream has been pushed or liquid by from above-mentioned normal saline pipeline side in the situation that the 2nd valve member side has been pushed, liquid flows or to flowing towards the direction of the 2nd valve member side from above-mentioned normal saline pipeline side towards the direction in downstream to the upstream side from above-mentioned base portion pipeline portion; And

The 1st relief valve, it has movable link and is disposed on above-mentioned normal saline pipeline, for by making above-mentioned movable link move and above-mentioned normal saline pipeline is opened and closed.

2. fluid loop suit according to claim 1, wherein,

Above-mentioned the 1st relief valve is configured to, and under the state of being pressed, makes above-mentioned normal saline to above-mentioned base portion pipeline portion side flow at above-mentioned movable link from outside.

3. fluid loop suit according to claim 1 and 2, wherein,

This fluid loop suit also comprises:

Changer pipeline, its one end is connected with changer and the other end is connected with above-mentioned base portion pipeline portion; And

The 2nd relief valve, it has movable link and is configured on this changer pipeline, for by making above-mentioned movable link move and this changer pipeline is opened and closed.

4. be set with according to the fluid loop described in any one in claim 1～3, wherein,

On at least one pipeline in above-mentioned contrast agent pipeline and above-mentioned normal saline pipeline, be provided with drop chamber.

5. a fluid loop system, wherein,

This fluid loop system comprises:

Therapeutic medical fluid loop suit in claim 1～4 described in any one;

Infusion appliance, it to be the mode of the syringe dismounting being connected with this fluid loop can be kept to this syringe, and the piston component of this syringe is moved and carries out injection and the suction of liquid; And

Switch, it is for keeping the part in aforesaid liquid loop, and has the driver part of the above-mentioned movable link action for making at least above-mentioned the 1st relief valve.

6. fluid loop system according to claim 5, wherein,

The above-mentioned driver part of above-mentioned switch has according to the drive division moving from outside control signal.

7. fluid loop system according to claim 6, wherein,

Above-mentioned drive source is motor.

8. according to the fluid loop system described in any one in claim 5～7, wherein,

Above-mentioned switch also has the air borne sensor for detection of the bubble in above-mentioned patient's pipeline.