CN104258485A - Infusion pump/infusion pump detector comprehensive calibration device - Google Patents
Infusion pump/infusion pump detector comprehensive calibration device Download PDFInfo
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- CN104258485A CN104258485A CN201410554975.9A CN201410554975A CN104258485A CN 104258485 A CN104258485 A CN 104258485A CN 201410554975 A CN201410554975 A CN 201410554975A CN 104258485 A CN104258485 A CN 104258485A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
本发明是一种输液泵/输液泵检测仪综合校准装置，是采用密度测量的方法对输液泵或输液泵检测仪进行校准，其主要由供水桶、活塞式流量控制器、压力表、液体质量流量计、密度连测仪、阻力调节阀、测量筒和第一光栅尺组成；其中，供水桶的出水口通过管道与活塞式流量控制器的活塞缸的进液口连接，活塞缸的出液口通过管道与测量筒的入口连接，测量筒的出口通过管道与供水桶的进水口连接，构成液体循环回路；第一光栅尺设置于测量筒；压力表、液体质量流量计、密度连测仪及阻力调节阀设置于连接活塞缸的出液口与测量筒的入口的管道上；被校准的输液泵或输液泵检测仪接入连接活塞缸的出液口与测量筒的入口的管道。
The present invention is a comprehensive calibration device for infusion pump/infusion pump detector, which adopts the method of density measurement to calibrate the infusion pump or infusion pump detector, which is mainly composed of water supply bucket, piston flow controller, pressure gauge, liquid quality It is composed of a flowmeter, a density continuous measuring instrument, a resistance regulating valve, a measuring cylinder and a first grating ruler; among them, the water outlet of the water supply bucket is connected with the liquid inlet of the piston cylinder of the piston flow controller through a pipeline, and the liquid outlet of the piston cylinder The mouth is connected to the inlet of the measuring cylinder through a pipeline, and the outlet of the measuring cylinder is connected to the water inlet of the water supply barrel through a pipeline to form a liquid circulation loop; the first grating ruler is set on the measuring cylinder; pressure gauge, liquid mass flowmeter, density continuous measuring instrument And the resistance regulating valve is arranged on the pipeline connecting the liquid outlet of the piston cylinder and the inlet of the measuring cylinder; the calibrated infusion pump or infusion pump tester is connected to the pipeline connecting the liquid outlet of the piston cylinder and the inlet of the measuring cylinder.
Description
Technical field
The present invention relates to a kind of calibration (tracing to the source) device of medical testing equipment, particularly relate to a kind of infusion pump/infusion pump detector integrated correction device.
Background technology
Infusion pump detector is used to the measurement instrument calibrating infusion pump.For infusion pump and infusion pump detector, topmost measuring parameter has two: flow and blockage pressure.Wherein, the measuring range of flow is (0-1.200) L/h, and the measuring range of blockage pressure is (0-20) kPa.Infusion pump can be understood as the generator of fluid flow, and infusion pump tester is then the aggregation of sensor.
At present, calibration steps both at home and abroad for infusion pump/infusion pump detector is substantially all confined to weight method, namely add the quality of method determination liquid and the time of flowing of stopwatch (or software timing) with balance, thus calculate the fluid flow of unit interval.The advantage of this method is that method simply, easily obtains, and major appliances is easily traced to the source.But there is a lot of shortcoming equally in this method, as: time controling part, according to hand-held stopwatch, so Time Calculation easily introduces the larger measurement error caused by anthropic factor; According to software type clocking method, the sample frequency of relevant device cannot ensure again; In weighing process, evaporate, tube wall hang liquid and low discharge injection time last a few drop of liquid drippage situation, all can impact the quality of liquid.Although therefore weight method widely uses, not science, rationally.
At present, what the calibration of the blockage pressure of infusion pump detector adopted is the method that air pressure detects, and with fluid loop without any contacting, this is irrational in the infusion process of reality.
In addition, because inside of human body exists certain intrinsic pressure, but the calibration steps of traditional infusion pump/infusion pump detector does not all realize intrinsic pressure simulation, can say, does not have the method for intrinsic pressure detection to be unscientific.And in conventional calibration method, whole loop is open loop mode, and the real infusion process of human body is a closed-loop path, and the liquid of infusion incorporates in blood circulation process after entering vein.
Summary of the invention
The object of the invention is to, a kind of infusion pump/infusion pump detector integrated correction device of new structure is provided, technical problem to be solved is that it adopts the method for density measure, the density of liquid within certain period is measured by density tie-in instrument, and calculate the meansigma methods of during this period of time fluid density, by the variable quantity of liquid capacity in the first optical grating ruler measurement during this period of time measuring cylinder, and by the meansigma methods of density that will record in Measuring Time according to density tie-in instrument and the product of the variable quantity of liquid capacity in measuring cylinder in Measuring Time, the mass flow recorded in Measuring Time with liquid mass flow meter and the product of Measuring Time are compared, ensure that density measuring method is to the accuracy of infusion pump/infusion pump detector calibration result.
Another object of the present invention is to, a kind of infusion pump/infusion pump detector integrated correction device of new structure is provided, technical problem to be solved is that it passes through to add in the loop the simulation arm of band blood circulation, in order to simulate the intrinsic pressure of human body in infusion process, form the closed loop of real intrinsic pressure simulation, make detection more scientific.
Another object of the present invention is, a kind of infusion pump/infusion pump detector integrated correction device of new structure is provided, technical problem to be solved is that it can carry out areal survey to the flow velocity in infusion pump or infusion pump detector range ability by employing three groups of piston fluid controllers, makes calibration result more accurate.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of infusion pump/infusion pump detector integrated correction device that the present invention proposes, it comprises: for bucket, piston fluid controller, Pressure gauge, liquid mass flow meter, density tie-in instrument, resistance control valve, measuring cylinder and the first grating scale; Wherein, the described outlet for bucket is connected by pipeline with the inlet of the piston cylinder of described piston fluid controller, the liquid outlet of the described piston cylinder of described piston fluid controller is connected by pipeline with the entrance of described measuring cylinder, the outlet of described measuring cylinder is connected by pipeline with the described water inlet for bucket, forms liquid circulation loop; Described first grating scale is arranged at described measuring cylinder, measures the variable quantity of liquid capacity in described measuring cylinder; Described Pressure gauge, described liquid mass flow meter, described density tie-in instrument and described resistance control valve be arranged at connect the liquid outlet of described piston cylinder and the entrance of described measuring cylinder pipeline on; Described Pressure gauge, described liquid mass flow meter and described density tie-in instrument measure the pressure of the liquid flowed through in the pipeline of place, mass flow and density respectively; Described resistance control valve regulates the blockage pressure of the liquid flowed through in the pipeline of place; The infusion pump be calibrated or the access of infusion pump detector connect the pipeline of the liquid outlet of described piston cylinder and the entrance of described measuring cylinder, make the liquid that flowed out by the liquid outlet of described piston cylinder enter described measuring cylinder after the infusion pump that is calibrated or infusion pump detector.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid infusion pump/infusion pump detector integrated correction device, wherein said piston fluid controller also comprises: push rod, push rod controller and the second grating scale; Described push rod controller is connected with described push rod, and described push rod is connected with the piston rod of described piston cylinder, drives the piston of described piston rod to move in described piston cylinder; Described second grating scale is arranged at described push rod, detects the displacement of described push rod.
Aforesaid infusion pump/infusion pump detector integrated correction device, comprise piston fluid controller described in three groups, described in three groups, the described piston cylinder of piston fluid controller is connected in parallel; And the volume of the described piston cylinder of piston fluid controller described in three groups is different, be respectively areal survey is carried out to the flow velocity in the infusion pump be calibrated or infusion pump detector range ability.
Aforesaid infusion pump/infusion pump detector integrated correction device, the flow rates wherein in the infusion pump be calibrated corresponding to described piston cylinder of piston fluid controller described in three groups or the range ability of infusion pump detector is respectively (0-0.050) L/h, (0.051-0.150) L/h and (0.151-1.200) L/h.
Aforesaid infusion pump/infusion pump detector integrated correction device, wherein on the pipeline connecting the liquid outlet of described piston cylinder and the entrance of described measuring cylinder, be provided with the first two position three-way valve, the entrance of described first two position three-way valve is connected by pipeline with the liquid outlet of described piston cylinder, and the first outlet and second outlet of described first two position three-way valve are connected by pipeline with the entrance of described measuring cylinder respectively; Described Pressure gauge, described liquid mass flow meter, described density tie-in instrument and described resistance control valve are arranged on the pipeline of the first outlet of described first two position three-way valve of connection and the entrance of described measuring cylinder; The infusion pump be calibrated or infusion pump detector are that access connects the first outlet of described first two position three-way valve and the pipeline of the entrance of described measuring cylinder.
Aforesaid infusion pump/infusion pump detector integrated correction device, also comprises: the simulation arm of band blood circulation; Described simulation arm be arranged at connect the liquid outlet of described piston cylinder and the entrance of the first two position three-way valve pipeline on, make the liquid flowed out by the liquid outlet of described piston cylinder after the blood circulation of described simulation arm, enter the infusion pump or infusion pump detector be calibrated.
Aforesaid infusion pump/infusion pump detector integrated correction device, wherein on the pipeline connecting the liquid outlet of described piston cylinder and the entrance of the first two position three-way valve, be provided with the first check-valves, the blood circulation of described simulation arm in parallelly with described first check-valves accesses described liquid circulation loop; Wherein, the entrance of the blood circulation of described simulation arm and outlet are connected respectively by the pipeline of pipeline with described first check-valves both sides, and the pipeline be connected with described first check-valves two side ducts in entrance and the outlet of the blood circulation of described simulation arm is respectively equipped with the second check-valves and the 3rd check-valves.
Aforesaid infusion pump/infusion pump detector integrated correction device, the blood circulation of wherein said simulation arm is also connected with an overflow valve, and described overflow valve is connected second of described first two position three-way valve by pipeline and exports and be connected with the first entrance of the second two position three-way valve on the pipeline of the entrance of described measuring cylinder with being arranged at; Wherein, the second entrance of described second two position three-way valve exports with second of described first two position three-way valve to be connected by pipeline, and the outlet of described second two position three-way valve is connected by pipeline with the entrance of described measuring cylinder.
Aforesaid infusion pump/infusion pump detector integrated correction device, wherein in the first outlet connecting described first two position three-way valve with the pipeline of the entrance of described measuring cylinder, be provided with the first electromagnetic valve, the infusion pump be calibrated or infusion pump detector in parallelly with described first electromagnetic valve access described liquid circulation loop; Wherein, the entrance of the infusion pump be calibrated or infusion pump detector and outlet are connected respectively by the pipeline of pipeline with described first electromagnetic valve both sides, and the pipeline be connected with described first electromagnetic valve two side ducts in entrance and the outlet of the infusion pump be calibrated or infusion pump detector is respectively equipped with the second electromagnetic valve and the 3rd electromagnetic valve.
Aforesaid infusion pump/infusion pump detector integrated correction device, the wherein said outlet for bucket is connected by the entrance of pipeline with a Ge Fa island, and three outlets on described valve island are connected respectively by the inlet of pipeline with three described piston cylinders of piston fluid controller described in three groups; Described in three groups, the liquid outlet of three described piston cylinders of piston fluid controller is connected in parallel on pipeline and is respectively equipped with check-valves.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, infusion pump of the present invention/infusion pump detector integrated correction device at least has following advantages and beneficial effect:
One, infusion pump of the present invention/infusion pump detector integrated correction device adopts by density tie-in instrument, the method of the density measure of measuring cylinder and the first grating scale composition replaces traditional weight method, the density of liquid within certain period is measured by density tie-in instrument, and calculate the meansigma methods of during this period of time fluid density, by the variable quantity of liquid capacity in the first optical grating ruler measurement during this period of time measuring cylinder, and by the meansigma methods of density that will record in Measuring Time according to density tie-in instrument and the product of the variable quantity of liquid capacity in measuring cylinder in Measuring Time, the mass flow recorded in Measuring Time with liquid mass flow meter and the product of Measuring Time are compared, ensure that density measuring method is to the accuracy of infusion pump/infusion pump detector calibration result.
Two, infusion pump of the present invention/infusion pump detector integrated correction device, by adding the simulation arm of band blood circulation in the loop, in order to simulate the intrinsic pressure of human body in infusion process, forms the closed loop of real intrinsic pressure simulation, makes detection more scientific.
Three, infusion pump of the present invention/infusion pump detector integrated correction device can carry out areal survey to the flow velocity in infusion pump or infusion pump detector range ability by employing three groups of piston fluid controllers, ensure enough flow accuracies, make calibration result more accurate.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of description, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a preferred embodiment of infusion pump of the present invention/infusion pump detector integrated correction device.
1: for bucket 2,3,4: piston fluid controller
5: Pressure gauge 6: liquid mass flow meter
7: density tie-in instrument 8: resistance control valve
9: measuring cylinder 10: the first grating scale
11,12,13: piston cylinder 14,15,16: push rod
17,18,19: push rod controller 20,21,22: and the second grating scale
23: the first electromagnetic valve 24: the second electromagnetic valves
25: the three electromagnetic valves 26: blood circulation
27: simulation arm 28: the first check-valves
29: the second check-valves 30: the three check-valves
31: overflow valve 32: the second two position three-way valve
33: the first two position three-way valves 34: valve island
35: electromagnetic valve 36,37,38: check-valves
40: infusion pump or infusion pump detector
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the infusion pump proposed according to the present invention/its detailed description of the invention of infusion pump detector integrated correction device, structure, feature and effect thereof, be described in detail as follows.
Referring to shown in Fig. 1, is the schematic diagram of a preferred embodiment of infusion pump of the present invention/infusion pump detector integrated correction device.
Infusion pump of the present invention/infusion pump detector integrated correction device is used for the measurement and calibration to infusion pump and infusion pump detector, it is primarily of supplying bucket 1, piston fluid controller 2,3,4, Pressure gauge 5, liquid mass flow meter 6, density tie-in instrument 7, resistance control valve 8, measuring cylinder 9 and the first grating scale 10 form.
Wherein, be connected by pipeline with the inlet of the piston cylinder 11,12,13 of piston fluid controller 2,3,4 for the outlet of bucket 1, the liquid outlet of the piston cylinder 11,12,13 of piston fluid controller 2,3,4 is connected by pipeline with the entrance of measuring cylinder 9, the outlet of measuring cylinder 9 is connected by pipeline with the water inlet for bucket 1, forms liquid circulation loop.First grating scale 10 is arranged at measuring cylinder 9, for measuring the variable quantity of liquid capacity in measuring cylinder 7.Pressure gauge 5, liquid mass flow meter 6, density tie-in instrument 7 and resistance control valve 8 are arranged on the pipeline of the connection liquid outlet of piston cylinder 11,12,13 and the entrance of measuring cylinder 9.The infusion pump be calibrated or infusion pump detector 40 access the pipeline connecting the liquid outlet of piston cylinder 11,12,13 and the entrance of measuring cylinder 9, make the liquid that flowed out by the liquid outlet of piston cylinder 11,12,13 enter measuring cylinder 9 after the infusion pump that is calibrated or infusion pump detector 40.
Wherein, Pressure gauge 5, liquid mass flow meter 6 and density tie-in instrument 7 are respectively used to measure the pressure of the liquid flowed through in the pipeline of place, mass flow and density, resistance control valve 8, for regulating the blockage pressure of the liquid flowed through in the pipeline of place, makes to be consistent with actual infusion process to the calibration of infusion pump or infusion pump detector 40.
As shown in Figure 1, in liquid circulation loop of the present invention, the pipeline connecting the liquid outlet of piston cylinder 11,12,13 and the entrance of measuring cylinder 9 is provided with the first electromagnetic valve 23.The infusion pump be calibrated or infusion pump detector 40 in parallelly with the first electromagnetic valve 23 access liquid circulation loop.Wherein, the entrance and exit of the infusion pump be calibrated or infusion pump detector 40 is connected respectively by the pipeline of pipeline with the first electromagnetic valve 23 both sides, and the pipeline be connected in entrance and exit and the first electromagnetic valve 23 liang of side ducts of the infusion pump be calibrated or infusion pump detector 40 is respectively equipped with the second electromagnetic valve 24 and the 3rd electromagnetic valve 25.
When using the present invention to calibrate infusion pump or infusion pump detector 40, that the first electromagnetic valve 23 cuts out, and the second electromagnetic valve 24 and the 3rd electromagnetic valve 25 are opened, make the liquid coming from piston fluid controller 2,3 or 4 by entering measuring cylinder 9 after infusion pump or infusion pump detector 40.
Infusion pump of the present invention/infusion pump detector integrated correction device utilizes by density tie-in instrument 7, the method of the density measure of measuring cylinder 9 and the first grating scale 10 composition replaces traditional weight method, the density of liquid within certain period is measured by density tie-in instrument 7, and calculate the meansigma methods of during this period of time fluid density, the variable quantity of liquid capacity in during this period of time measuring cylinder 9 is measured by the first grating scale 10, according to the relation of density and quality and volume, i.e. formula ρ=m/V, by the meansigma methods of density that records in Measuring Time according to density tie-in instrument 7 and the product of the variable quantity of liquid capacity in measuring cylinder 9 in Measuring Time, as the first mass change amount, with the product of the mass flow during this period of time recorded by liquid mass flow meter 6 and Measuring Time, as the second mass change amount, compare, to ensure the accuracy that density measuring method is calibrated infusion pump or infusion pump detector 40 flow velocity.
Piston fluid controller 2,3,4 of the present invention is mainly by piston cylinder 11,12,13, and push rod 14,15,16, push rod controller 17,18,19 and second grating scale 20,21,22 forms.Wherein, push rod controller 17,18,19 is connected with push rod 14,15,16, and push rod 14,15,16 is connected with the piston rod of piston cylinder 11,12,13, and the piston of piston rod moves in piston cylinder 11,12,13.Second grating scale 20,21,22 is arranged at push rod 14,15,16, detects the displacement of push rod 14,15,16.
In the preferred embodiment, be provided with three groups of such piston fluid controllers 2,3,4 in infusion pump of the present invention/infusion pump detector integrated correction device, areal survey is carried out to the flow velocity in the infusion pump be calibrated or infusion pump detector 40 range ability.Wherein, the piston cylinder 11,12,13 of three groups of piston fluid controllers 2,3,4 is connected in parallel, and the volume of the piston cylinder 11,12,13 of three groups of piston fluid controllers 2,3,4 is different, and such as its volume is 150ml, 600ml and 1.5L respectively.Flow rates in the infusion pump be calibrated corresponding to piston cylinder 11,12,13 of three groups of piston fluid controllers 2,3,4 or the range ability of infusion pump detector 40, such as, be respectively (0-0.050) L/h, (0.051-0.150) L/h and (0.151-1.200) L/h.
In the preferred embodiment, the pipeline be connected with the inlet of piston cylinder 11,12,13 for the outlet of bucket 1 of the present invention is provided with valve.As shown in Figure 1, the outlet for bucket 1 of the present invention is connected by the entrance of pipeline with a Ge Fa island 34, and three outlets on valve island 34 are connected respectively by the inlet of pipeline with three piston cylinders 11,12,13 of three groups of piston fluid controllers 2,3,4.Be connected in parallel on pipeline at the liquid outlet of three piston cylinders 11,12,13 of the present invention's three groups of piston fluid controllers 2,3,4 and be respectively equipped with check-valves 36,37,38.
As shown in Figure 1, the present invention is also provided with the first two position three-way valve 33 on the pipeline connecting the liquid outlet of piston cylinder 11,12,13 and the entrance of measuring cylinder 9.The entrance A of the first two position three-way valve 33 is connected by pipeline with the liquid outlet of piston cylinder 11,12,13, and the first outlet B and second outlet C of the first two position three-way valve 33 is connected by pipeline with the entrance of measuring cylinder 9 respectively.Wherein, Pressure gauge 5, liquid mass flow meter 6, density tie-in instrument 7 and resistance control valve 8 are arranged on the pipeline of the first outlet B of connection first two position three-way valve 33 and the entrance of measuring cylinder 9, and the infusion pump be calibrated or infusion pump detector 40 are pipelines of the first outlet B of access connection first two position three-way valve 33 and the entrance of measuring cylinder 9.
When using the present invention to calibrate infusion pump or infusion pump detector 40, make the entrance A of the first two position three-way valve 33 and first export B to be communicated with, thus make the liquid coming from piston fluid controller 2,3 or 4 after Pressure gauge 5, liquid mass flow meter 6, density tie-in instrument 7, infusion pump or infusion pump detector 40 and resistance control valve 8, enter measuring cylinder 9 by the first two position three-way valve 33, the flow velocity of infusion pump or infusion pump detector 40 is calibrated.When not using the present invention to calibrate infusion pump or infusion pump detector 40, make the entrance A of the first two position three-way valve 33 and second export C to be communicated with, thus make the liquid coming from piston fluid controller 2,3 or 4 directly enter measuring cylinder 9 by the first two position three-way valve 33, the self calibration to this loop can be realized.
Shown in Fig. 1, the present invention can also add the simulation arm 27 of band blood circulation 26 in liquid circulation loop, simulates the intrinsic pressure of human body in infusion process, thus forms the closed loop of real intrinsic pressure simulation.Wherein, simulation arm 27 is arranged on the pipeline of the connection liquid outlet of piston cylinder 11,12 or 13 and the entrance A of the first two position three-way valve 33, makes the liquid flowed out by the liquid outlet of piston cylinder 11,12 or 13 enter the infusion pump or infusion pump detector 40 that are calibrated after simulating the blood circulation 26 of arm 27.
As shown in Figure 1, in liquid circulation loop of the present invention, the pipeline connecting the liquid outlet of piston cylinder 11,12,13 and the entrance of measuring cylinder 9 is also provided with the first check-valves 28, and simulating arm 27 blood circulation 26 is in parallelly with the first check-valves 28 access liquid circulation loop.Wherein, the entrance of blood circulation 26 and the outlet of simulation arm 27 are connected respectively by the pipeline of pipeline with the first check-valves 28 both sides, and the pipeline be connected with the first check-valves 28 liang of side ducts at the entrance of blood circulation 26 and outlet of simulating arm 27 is respectively equipped with the second check-valves 29 and the 3rd check-valves 30.
When using the present invention to calibrate infusion pump or infusion pump detector 40, if make the blood circulation 26 of simulation arm 27 participate in circulation, the first check-valves 28 is then needed to close, and the second check-valves 29 and the 3rd check-valves 30 are opened, the liquid stream making to come from piston fluid controller 2,3 or 4 by infusion pump or infusion pump detector 40, finally enters measuring cylinder 9 after simulating the blood circulation 26 of arm 27.And if make the blood circulation 26 of simulation arm 27 do not participate in circulation, the first check-valves 28 is then needed to open, and the second check-valves 29 and the 3rd check-valves 30 are closed, make the liquid coming from piston fluid controller 2,3 or 4 not flow through the blood circulation 26 of simulation arm 27 after by infusion pump or infusion pump detector 40, enter measuring cylinder 9.
As shown in Figure 1, the blood circulation 26 of simulation arm 27 of the present invention is also connected with an overflow valve 31, and overflow valve 31 is connected second of the first two position three-way valve 33 by pipeline and exports C and be connected with the first entrance A of the second two position three-way valve 32 on the pipeline of the entrance of measuring cylinder 9 with being arranged at.Wherein, the second entrance B of the second two position three-way valve 32 exports C with second of the first two position three-way valve 33 to be connected by pipeline, and the outlet C of the second two position three-way valve 32 is connected by pipeline with the entrance of measuring cylinder 9.
As shown in Figure 1, the present invention is also provided with electromagnetic valve 35 in the outlet of measuring cylinder 9, and the outlet of measuring cylinder 9 of the present invention is connected with the water inlet for bucket 1 by pipeline by electromagnetic valve 35.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107206158A (en) * | 2015-02-02 | 2017-09-26 | 赛诺菲-安万特德国有限公司 | The method that preparation starts medical pump |
| CN108152530A (en) * | 2018-01-16 | 2018-06-12 | 西安市红会医院 | A kind of microtubule tachymeter and its speed-measuring method |
| CN115400286A (en) * | 2022-10-09 | 2022-11-29 | 杭州市临平区质量计量监测中心 | Infusion pump detector calibrating device and method |
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| CN115400286A (en) * | 2022-10-09 | 2022-11-29 | 杭州市临平区质量计量监测中心 | Infusion pump detector calibrating device and method |
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