CN112403280A - Full-automatic pressure drop testing arrangement - Google Patents
Full-automatic pressure drop testing arrangement Download PDFInfo
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- CN112403280A CN112403280A CN202011395038.5A CN202011395038A CN112403280A CN 112403280 A CN112403280 A CN 112403280A CN 202011395038 A CN202011395038 A CN 202011395038A CN 112403280 A CN112403280 A CN 112403280A
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 189
- 238000004088 simulation Methods 0.000 claims abstract description 39
- 239000002699 waste material Substances 0.000 claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 23
- 239000002504 physiological saline solution Substances 0.000 description 9
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000037157 Azotemia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 208000009852 uremia Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/243—Dialysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/28—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/30—Accessories; Auxiliary operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/32—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2653—Degassing
- B01D2311/2657—Deaeration
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a full-automatic pressure drop testing device, which comprises a first container, a second container and a third container, wherein the first container, the second container and the third container are respectively used for containing simulation liquid, normal saline and waste liquid, the first container and the second container are both communicated with a liquid inlet of a dialyzer through a liquid inlet pipeline, the first container and the third container are both communicated with a liquid outlet of the dialyzer through a liquid outlet pipeline, a first pressure sensor is arranged on the liquid inlet pipeline, a second pressure sensor is arranged on the liquid outlet pipeline, and the first pressure sensor and the second pressure sensor are respectively close to the liquid inlet and the liquid outlet of the dialyzer; the dialyzer also comprises an ultrasonic bubble removing device arranged on the dialyzer and a controller electrically connected with the first pressure sensor, the second pressure sensor and the ultrasonic bubble removing device. The full-automatic pressure drop testing device can directly carry out continuity testing, reduces the influence of human factors in the testing process, and increases the testing accuracy.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a full-automatic pressure drop testing device.
Background
Dialysers, also known as artificial kidneys, are important medical instruments for treating uremia at present, and remove excessive water and toxins from patients by means of convection and diffusion in the treatment process, so that the lives of the patients are maintained. The pressure drop is an important index for evaluating the performance of the dialyzer in vitro, and the flow state of blood and dialysate in the dialyzer is directly influenced by the level of the pressure drop, so that the performance of the dialyzer is determined. The testing method adopted at the present stage is built according to the device in YY-0053, the adjustment of pressure and the reading of data in the testing process completely depend on the operation of personnel, the automation degree is low, the operation errors of different personnel are large, and the efficiency is low.
In summary, how to effectively solve the problems of low automation degree of dialyzer pressure drop and the like is a problem which needs to be solved urgently by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a full-automatic pressure drop testing device which can directly carry out continuity testing, reduces the influence of human factors in the testing process and increases the testing accuracy.
In order to solve the technical problems, the invention provides the following technical scheme:
a full-automatic pressure drop testing device comprises a first container, a second container and a third container which are used for containing simulation liquid, normal saline and waste liquid respectively, wherein the first container and the second container are communicated with a liquid inlet of a dialyzer through a liquid inlet pipeline, the first container and the third container are communicated with a liquid outlet of the dialyzer through a liquid outlet pipeline, a first pressure sensor is arranged on the liquid inlet pipeline, a second pressure sensor is arranged on the liquid outlet pipeline, and the first pressure sensor and the second pressure sensor are close to the liquid inlet and the liquid outlet of the dialyzer respectively; the dialyzer also comprises an ultrasonic bubble removing device arranged on the dialyzer and a controller electrically connected with the first pressure sensor, the second pressure sensor and the ultrasonic bubble removing device.
Preferably, the device further comprises an alarm device electrically connected with the controller.
Preferably, the device further comprises a magnetic heating stirrer arranged below the first container.
Preferably, the liquid inlet pipeline comprises two branch liquid inlet pipelines respectively communicated with the simulation liquid and the physiological saline and a total liquid inlet pipeline communicated with a liquid inlet of the dialyzer, the two branch liquid inlet pipelines and the total liquid inlet pipeline are connected through a first tee joint, the first pressure sensor is arranged on the total liquid inlet pipeline, and the first tee joint is electrically connected with the controller.
Preferably, the liquid outlet pipeline comprises two branching liquid pipelines respectively communicated with the simulation liquid and the waste liquid and a main liquid outlet pipeline communicated with a liquid outlet of a dialyzer, the two branching liquid pipelines and the main liquid outlet pipeline are connected through a second tee joint, a second pressure sensor is arranged on the main liquid outlet pipeline, and the second tee joint is electrically connected with the controller.
Preferably, a regulating pump is arranged on the total liquid inlet pipeline and electrically connected with the controller.
Preferably, a flow meter is arranged on the main liquid outlet pipeline and electrically connected with the controller.
Preferably, the liquid outlet pipeline, the branch liquid inlet pipeline and the liquid inlet pipeline are detachably connected with the dialyzer, the regulating pump, the first pressure sensor, the second pressure sensor, the flowmeter, the first tee joint and the second tee joint.
The invention provides a full-automatic pressure drop testing device which comprises a first container, a second container, a third container, a first pressure sensor, a second pressure sensor, an ultrasonic defoaming device and a controller. The first container is filled with simulation liquid for simulating blood. The second container is filled with physiological saline for flushing all parts and pipelines. The third container is used for containing the simulation liquid, the physiological saline and other waste liquid after being washed.
The first container and the second container are both communicated with a liquid inlet of the dialyzer through liquid inlet pipelines, and simulation liquid or normal saline is selected to be communicated with the liquid inlet of the dialyzer in different procedures, for example, in drainage and test processes, the simulation liquid is communicated with the liquid inlet of the dialyzer through the liquid inlet pipelines; in the process of pre-filling and flushing, the normal saline is communicated with the liquid inlet of the dialyzer through the liquid inlet pipeline. Be provided with first pressure sensor on the feed liquor pipeline, first pressure sensor sets up in the position that is close to the cerini dialyser cerini inlet, and first pressure sensor is used for detecting the pressure that gets into cerini dialyser cerini inlet simulation liquid.
The first container and the third container are both communicated with the liquid outlet of the dialyzer through liquid outlet pipelines, the first container and the third container are selected to be communicated with the liquid outlet of the dialyzer in different procedures, for example, in the test process, the simulation liquid is communicated with the liquid outlet of the dialyzer through the liquid outlet pipelines, the tested simulation liquid is not polluted, and the simulation liquid is conveyed into the first container again, so that the repeated use of the simulation liquid is realized, and the cost is saved; in the drainage process, the simulation liquid is polluted by the physiological saline, becomes waste liquid, needs to be communicated with the liquid outlet of the dialyzer through a liquid outlet pipeline, and is conveyed to the third container. And a second pressure sensor is arranged on the liquid outlet pipeline, the second pressure sensor is arranged at a position close to the liquid outlet of the dialyzer, and the second pressure sensor is used for detecting the pressure of the simulation liquid flowing out of the liquid outlet of the dialyzer.
The ultrasonic bubble removing device is arranged on the dialyzer, so that residual bubbles in the dialyzer can be effectively removed, the test efficiency is improved under the condition that the data is accurate, meanwhile, the ultrasonic bubble removing device is adopted, residual bubbles in membrane wires are removed to the maximum degree, and the test accuracy is improved.
The controller is electrically connected with the first pressure sensor, the second pressure sensor and the ultrasonic defoaming device, preferably, the controller is a programmable PLC controller, and can control each component of the full-automatic pressure drop testing device, such as selection of a communication pipeline, determination of liquid passing time, opening and closing of a dialyzer and the ultrasonic defoaming device, detection of pressure values before and after the dialyzer, calculation of a pressure measurement value, display and the like, so as to effectively control.
By applying the technical scheme provided by the embodiment of the invention, the continuity test can be directly carried out according to the preset program by adopting the automatic control of the processor, all the adjustments are directly controlled by the system, and the manual intervention is not needed after the system is installed on the computer, so that the influence of human factors in the test process is reduced, the test accuracy is increased, and the working efficiency is improved under the condition of ensuring the test accuracy; an ultrasonic bubble removing device is added, so that the interference of bubbles in the membrane wires on the test result can be reduced to the greatest extent; the automatic cleaning function can automatically clean the pipeline after the test is finished, and the repeatability of the test result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a fully automatic pressure drop testing apparatus according to an embodiment of the present invention.
The drawings are numbered as follows:
the device comprises an ultrasonic bubble removing device 1, a dialyzer 2, a first pressure sensor 3, a regulating pump 4, a first tee joint 5, a second container 6, a magnetic heating stirrer 7, a first container 8, a second tee joint 9, a third container 10, a flowmeter 11, a second pressure sensor 12 and a controller 13.
Detailed Description
The core of the invention is to provide a full-automatic pressure drop testing device, which can directly carry out continuous testing, reduce the influence of human factors in the testing process and increase the testing accuracy.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a full-automatic pressure drop testing apparatus according to an embodiment of the present invention.
In a specific embodiment, the full-automatic pressure drop testing device provided by the invention comprises a first container 8, a second container 6 and a third container 10 which are respectively used for containing simulation liquid, normal saline and waste liquid, wherein the first container 8 and the second container 6 are both communicated with a liquid inlet of a dialyzer 2 through a liquid inlet pipeline, the first container 8 and the third container 10 are both communicated with a liquid outlet of the dialyzer 2 through a liquid outlet pipeline, a first pressure sensor 3 is arranged on the liquid inlet pipeline, a second pressure sensor 12 is arranged on the liquid outlet pipeline, and the first pressure sensor 3 and the second pressure sensor 12 are respectively close to the liquid inlet and the liquid outlet of the dialyzer 2; the device further comprises an ultrasonic bubble removing device 1 arranged on the dialyzer 2, and a controller 13 electrically connected with the first pressure sensor 3, the second pressure sensor 12 and the ultrasonic bubble removing device 1.
In the structure, the full-automatic pressure drop testing device comprises a first container 8, a second container 6, a third container 10, a first pressure sensor 3, a second pressure sensor 12, an ultrasonic defoaming device 1 and a controller 13.
The first container 8 contains a simulation liquid for simulating blood. The second container 6 contains physiological saline for flushing the various parts and lines. The third container 10 is used for containing the simulation liquid and waste liquid such as physiological saline after flushing.
The first container 8 and the second container 6 are both communicated with a liquid inlet of the dialyzer 2 through a liquid inlet pipeline, and simulation liquid or normal saline is selected to be communicated with the liquid inlet of the dialyzer 2 in different procedures, for example, in drainage and test processes, the simulation liquid is communicated with the liquid inlet of the dialyzer 2 through the liquid inlet pipeline; in the process of pre-filling and flushing, the normal saline is communicated with the liquid inlet of the dialyzer 2 through the liquid inlet pipeline.
Be provided with first pressure sensor 3 on the feed liquor pipeline, first pressure sensor 3 sets up in the position that is close to 2 inlets of cerini dialyser cerini, and first pressure sensor 3 is used for detecting the pressure that gets into 2 inlets of cerini dialyser cerini simulation liquid.
The first container 8 and the third container 10 are both communicated with the liquid outlet of the dialyzer 2 through liquid outlet pipelines, the first container 8 and the third container 10 are selected to be communicated with the liquid outlet of the dialyzer 2 in different procedures, for example, in the test process, the simulation liquid is communicated with the liquid outlet of the dialyzer 2 through the liquid outlet pipeline, the tested simulation liquid is not polluted, and the simulation liquid is conveyed into the first container 8 again, so that the repeated use of the simulation liquid is realized, and the cost is saved; in the drainage process, the simulation fluid is polluted by the physiological saline, becomes waste fluid, and needs to be communicated with the liquid outlet of the dialyzer 2 through a liquid outlet pipeline, and the waste fluid is conveyed into the third container 10.
Be provided with second pressure sensor 12 on the drain pipe, second pressure sensor 12 is close to the position setting of cerini dialyser cerini 2 liquid outlet, and second pressure sensor 12 is used for detecting the pressure of the simulation liquid of flowing out from the liquid outlet of cerini dialyser cerini 2.
Ultrasonic defoaming device 1 sets up on cerini dialyser cerini 2, can effectually detach remaining bubble in cerini dialyser cerini 2, has improved efficiency of software testing under the accurate condition of assurance data, adopts ultrasonic defoaming device 1 simultaneously, and the at utmost has got rid of the remaining bubble in the membrane silk, has improved the accuracy of test.
The controller 13 is electrically connected to the first pressure sensor 3, the second pressure sensor 12 and the ultrasonic defoaming device 1, preferably, the controller 13 is a programmable PLC controller 13, and can control each component of the full-automatic pressure drop testing device, such as selection of a communication pipeline, determination of liquid communication time, opening and closing timings of the dialyzer 2 and the ultrasonic defoaming device 1, detection of pressure values before and after the dialyzer 2, calculation and display of pressure measurement values, and the like.
The full-automatic pressure drop testing device provided by the invention is not limited to the situation, and under the condition that other components are not changed, the full-automatic pressure drop testing device also comprises an alarm device electrically connected with the controller 13, when the pressure change is large in the testing process, for example, the pressure difference is larger than a set value, the alarm device is triggered, the alarm device can give out a sound prompt or a flicker prompt to prompt an operator to check the device and the dialyzer 2 in time, the abnormality and the fault existing in the full-automatic pressure drop testing device and the dialyzer 2 are discharged in time, and the normal operation of the full-automatic pressure drop testing device and the dialyzer 2 is ensured.
In order to further optimize the technical scheme, the blood simulator further comprises a magnetic heating stirrer 7 arranged below the first container 8, wherein the magnetic heating stirrer 7 heats and stirs the simulation liquid, the temperature of the simulation liquid is equal to the temperature of the blood, the simulation liquid is prevented from precipitating, the simulation liquid is closer to the blood, and the effectiveness of the simulation liquid is ensured.
In another more reliable embodiment, based on any of the above embodiments, the liquid inlet pipeline includes two branch liquid inlet pipelines and a main liquid inlet pipeline, the two branch liquid inlet pipelines are respectively communicated with the simulation liquid and the physiological saline, the main liquid inlet pipeline is communicated with the liquid inlet of the dialyzer 2, the two branch liquid inlet pipelines and the main liquid inlet pipeline are connected through a first tee joint 5, the first pressure sensor 3 is disposed on the main liquid inlet pipeline, and the type of the liquid flowing into the dialyzer 2 is controlled through the first tee joint 5. Similarly, the liquid outlet pipeline comprises two liquid outlet pipelines respectively communicated with the simulation liquid and the waste liquid and a total liquid outlet pipeline communicated with the liquid outlet of the dialyzer 2, the two liquid outlet pipelines are connected with the total liquid outlet pipeline through a second tee joint 9, a second pressure sensor 12 is arranged on the total liquid outlet pipeline, and the liquid flowing out of the dialyzer 2 is controlled to go to the direction through the second tee joint 9. The number of used pipelines is small, and the whole system is simple. The first tee joint 5 and the second tee joint 9 are both electrically connected with the controller 13, so that automatic control is realized, and the control is convenient.
On the basis of any one of the above embodiments, the liquid inlet pipeline is provided with the adjusting pump 4, preferably, the adjusting pump 4 is arranged on the total liquid inlet pipeline, and the flow rate of the liquid flowing into the liquid inlet of the dialyzer 2 can be adjusted by controlling the pump speed of the adjusting pump 4, so that the flow rate can simulate the blood flow rate more truly, and the test result is more true.
Furthermore, the regulating pump 4 is electrically connected with the controller 13, the controller 13 controls the parameters of the regulating pump 4 such as opening, size, closing and opening time, the control is more accurate, the operation of personnel is not needed, the test error is smaller, and the automatic control is realized.
On the basis of any one of the above embodiments, a flow meter 11 is arranged on the liquid outlet pipeline, preferably, the flow meter 11 is arranged on the total liquid outlet pipeline, the flow meter 11 is used for detecting whether liquid flows out of the dialyzer 2, when the flow meter 11 detects that the liquid passes through, the ultrasonic bubble removal device 1 clamped on the dialyzer 2 is opened, residual bubbles in the dialyzer 2 are effectively removed, the opening time of the ultrasonic bubble removal device 1 is ensured to be accurate, and the utilization efficiency of the ultrasonic bubble removal device 1 is improved.
Further, flowmeter 11 is connected with controller 13 electricity, and flowmeter 11 sends the detection information for controller 13, and when the detection information was for detecting liquid and pass through, controller 13 can automatic control supersound bubble removal device 1 work, effectively in time gets rid of remaining bubble in cerini dialyser cerini 2, realizes accurate control.
Specifically, the working process of the full-automatic pressure drop testing device is as follows: the PLC 13 controls the first tee joint 5 to communicate the normal saline with the liquid inlet of the dialyzer 2, controls the second tee joint 9 to enable the liquid outlet of the dialyzer 2 to flow to the waste liquid, and then automatically adjusts the flow rate of the pump 4 to pre-charge and start timing. When the flow meter 11 detects that liquid passes through, the ultrasonic bubble removing device 1 clamped on the dialyzer 2 is opened, and bubbles remained in the dialyzer 2 are effectively removed. And after the preset pre-charging time is reached, adjusting the first tee joint 5 to the position of the simulation liquid, closing the ultrasonic defoaming device 1, and then conducting drainage according to the preset flow speed and time. After the drainage is finished, the second tee joint 9 is adjusted to the position of the simulation liquid, the flow speed of the adjusting pump 4 is tested, the pump speed of the actual digital adjusting pump 4 is measured according to the flowmeter 11, and after the preset pump speed is reached, the pressure value P1 of the first pressure sensor 3 and the pressure value P2 of the second sensor start to monitor the pressure and feed back to the PLC in real time. If the pressure value changes greatly in the test process, an alarm device is triggered to prompt an operator to check whether the device and the dialyzer 2 are abnormal or not. When the whole system operates to the set time, the PLC controller automatically records the pressure value of the first pressure sensor 3 within 1min
P1 and the pressure value P2 of the second sensor, and calculating the average values P1 and P2 according to the formula that delta P is P1
ˉ
P2 calculates the pressure drop across dialyzer 2 and displays the resulting value of the pressure drop on the PLC control panel, and then tests the value of the pressure drop at the next flow rate. After all tests are finished, the first tee joint 5 is automatically adjusted to the physiological saline, the adjusting pump 4 is started, and the pipeline is flushed for the next test.
By applying the technical scheme provided by the embodiment of the invention, the continuity test can be directly carried out according to the preset program by adopting the automatic control of the processor, all the adjustments are directly controlled by the system, and the manual intervention is not needed after the system is installed on the computer, so that the influence of human factors in the test process is reduced, the test accuracy is increased, and the working efficiency is improved under the condition of ensuring the test accuracy; the ultrasonic bubble removing device 1 is added, so that the interference of bubbles in the membrane wires on the test result can be reduced to the greatest extent; the automatic cleaning function can automatically clean the pipeline after the test is finished, and the repeatability of the test result is improved.
On the basis of any one of the above embodiments, the outgoing liquid pipeline, the total liquid outlet pipeline, the branch liquid inlet pipeline and the total liquid inlet pipeline are detachably connected with the dialyzer 2, the regulating pump 4, the first pressure sensor 3, the second pressure sensor 12, the flowmeter 11, the first tee joint 5 and the second tee joint 9, the pipelines are disposable pipelines, the pipelines can be replaced after the test is completed, the pipeline pollution is avoided, and the accuracy of the test result is ensured.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The fully automatic pressure drop testing device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The full-automatic pressure drop testing device is characterized by comprising a first container (8), a second container (6) and a third container (10) which are used for containing simulation liquid, normal saline and waste liquid respectively, wherein the first container (8) and the second container (6) are communicated with a liquid inlet of a dialyzer (2) through liquid inlet pipelines, the first container (8) and the third container (10) are communicated with a liquid outlet of the dialyzer (2) through liquid outlet pipelines, a first pressure sensor (3) is arranged on the liquid inlet pipelines, a second pressure sensor (12) is arranged on the liquid outlet pipelines, and the first pressure sensor (3) and the second pressure sensor (12) are close to the liquid inlet and the liquid outlet of the dialyzer (2) respectively; the dialyzer also comprises an ultrasonic bubble removing device (1) arranged on the dialyzer (2), and a controller (13) electrically connected with the first pressure sensor (3), the second pressure sensor (12) and the ultrasonic bubble removing device (1).
2. The fully automatic pressure drop test device of claim 1, further comprising an alarm device electrically connected to the controller (13).
3. The fully automated pressure drop testing device of claim 1, further comprising a magnetically heated agitator (7) disposed below the first container (8).
4. The fully automatic pressure drop test device according to any one of claims 1 to 3, wherein the liquid inlet pipeline comprises two branch liquid inlet pipelines respectively communicated with the simulation liquid and the normal saline, and a total liquid inlet pipeline communicated with the liquid inlet of the dialyzer (2), the two branch liquid inlet pipelines and the total liquid inlet pipeline are connected through a first tee joint (5), the first pressure sensor (3) is arranged on the total liquid inlet pipeline, and the first tee joint (5) is electrically connected with the controller (13).
5. The fully automatic pressure drop test device according to claim 4, wherein the liquid outlet line comprises two outlet liquid lines respectively communicating with the simulation liquid and the waste liquid, and a main liquid outlet line communicating with a liquid outlet of the dialyzer (2), the two outlet liquid lines and the main liquid outlet line are connected by a second tee joint (9), a second pressure sensor (12) is disposed on the main liquid outlet line, and the second tee joint (9) is electrically connected with a controller (13).
6. The full-automatic pressure drop testing device according to claim 5, wherein a regulating pump (4) is arranged on the total liquid inlet pipeline, and the regulating pump (4) is electrically connected with the controller (13).
7. The full-automatic pressure drop testing device according to claim 6, wherein a flow meter (11) is arranged on the main liquid outlet pipeline, and the flow meter (11) is electrically connected with the controller (13).
8. The fully automatic pressure drop testing device according to claim 7, wherein the outlet liquid line, the main outlet liquid line, the inlet branch liquid line and the main inlet liquid line are detachably connected to the dialyzer (2), the regulating pump (4), the first pressure sensor (3), the second pressure sensor (12), the flow meter (11), the first tee joint (5) and the second tee joint (9).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114209906A (en) * | 2022-01-04 | 2022-03-22 | 山东威高血液净化制品股份有限公司 | Automatic device and method for testing blood chamber pressure drop |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114209906A (en) * | 2022-01-04 | 2022-03-22 | 山东威高血液净化制品股份有限公司 | Automatic device and method for testing blood chamber pressure drop |
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| CN112403280B (en) | 2024-09-17 |
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Address after: No.20, Xingshan Road, Weihai Torch hi tech Industrial Development Zone, Weihai City, Shandong Province, 264210 Applicant after: Shandong Weigao blood purification products Co.,Ltd. Address before: No. 20, Xingshan Road, Weigao Industrial Park, chucun, Weihai high tech District, Weihai City, Shandong Province, 264210 Applicant before: WEIHAI WEIGAO BLOOD PURIFICATION PRODUCTS Co.,Ltd. |
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