CN219251395U - Automatic detection system for ventricular assist pump - Google Patents
Automatic detection system for ventricular assist pump Download PDFInfo
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- CN219251395U CN219251395U CN202222535857.6U CN202222535857U CN219251395U CN 219251395 U CN219251395 U CN 219251395U CN 202222535857 U CN202222535857 U CN 202222535857U CN 219251395 U CN219251395 U CN 219251395U
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Abstract
The utility model discloses an automatic detection system of a ventricular assist pump, which comprises a container tank, an electric damping valve, a detection assembly and a controller, wherein a liquid outlet of the container tank is connected with a liquid inlet of the ventricular assist pump through a first pipeline, the liquid inlet of the container tank is connected with a liquid outlet of the ventricular assist pump through a second pipeline, the electric damping valve is arranged on a second pipeline between the container tank and the ventricular assist pump, the detection assembly comprises a first pressure sensor arranged on the first pipeline, a second pressure sensor and a flow sensor arranged on the second pipeline, and the controller receives data of the first pressure sensor, the second pressure sensor and the flow sensor and controls the rotating speed of the ventricular assist pump and the action of the electric damping valve. The utility model simplifies the steps and the flow for measuring the Q-H curve of the ventricular assist pump, obtains more experimental data compared with the traditional manual method, reduces the detection personal error and realizes more accurate mapping of the Q-H curve.
Description
Technical Field
The utility model relates to the technical field of medical instrument testing, in particular to an automatic detection system for an auxiliary pump of a heart chamber.
Background
Heart failure is the final stage of a variety of heart diseases, with a mostly poor prognosis. According to epidemiological investigation, the incidence rate of heart failure in China is continuously increased in the past few decades, the incidence rate of people aged 25-64 is 0.57%, the incidence rate of people aged 65-79 is 3.86%, the incidence rate of people aged 80 is 7.55%, and the death rate in 5 years is as high as 50%. The ventricular assist device is one of the most effective treatment means for end-stage heart failure, has the functions of assisting heart to pump blood and guaranteeing viscera blood supply, can remarkably improve the life quality and survival rate of heart failure patients, can be used as a bridge for heart transplantation treatment for patients with transplantation conditions, can be used as a target treatment for patients without transplantation conditions, can be used as a rehabilitation bridge for patients with acute heart failure or acute cardiogenic shock, and can be used for temporarily replacing heart functions and preventing cardiac muscle from further ischemia damage.
In the development process of the ventricular assist device, the performance of the ventricular assist device needs to be detected through a simulated hydraulic experiment, wherein a Q-H curve (a lift-flow curve) describes the corresponding relation between flow and lift at different rotating speeds, and the lift can be converted with pressure (mmHg), so that the performance of the ventricular assist device is one of the most important characteristic curves of the ventricular assist pump. The Q-H curve can reflect the basic performance of the pump, is an important basis for selecting different auxiliary pumps with heart chambers, and is an essential step in the research and development process of the auxiliary pumps with heart chambers. Under the condition that the rotation speed of the pump is fixed, the Q-H curve is fixed, and the rotation speed of the pump is changed, and the Q-H curve is correspondingly changed.
In the laboratory research and development environment, there is no unified, simple and convenient standard method for determining the Q-H curve of the ventricular assist pump, and many technicians design detection devices and methods by themselves, usually use a pipeline to connect with a blood pump, and add a manual damping valve (a clamp for adjusting the clamping degree), a pressure sensor, a flow sensor, a liquid container and other components on the circuit for testing. When testing, the main problem that exists is complex operation, the damping of damping valve needs constantly manual change in order to change the lift under each rotational speed, and the data point of record is limited and needs a assistant to assist manual record experimental data, is difficult to obtain a large amount of accurate data in the short time, and nonstandard experimental operation has great influence to experimental error, probably leads to the skew of survey result.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide an automatic detection system for a ventricular assist pump, which can simply and conveniently measure the steps and the flow of a ventricular assist pump Q-H curve, can obtain more experimental data compared with a traditional manual method, reduces the detected human error and realizes more accurate mapping of the Q-H curve.
In order to solve the technical problems, the utility model adopts the following technical scheme: a ventricular assist pump automated detection system, comprising:
the liquid outlet of the container tank is connected with the liquid inlet of the ventricular assist pump through a first pipeline, and the liquid inlet of the container tank is connected with the liquid outlet of the ventricular assist pump through a second pipeline;
an electric damping valve disposed on the second line between the canister and the ventricular assist pump;
the detection assembly comprises a first pressure sensor arranged on the first pipeline, a second pressure sensor arranged on the second pipeline and a flow sensor, wherein the second pressure sensor is arranged between the electric damping valve and the ventricular assist pump, and the flow sensor is arranged between the second pressure sensor and the electric damping valve;
the input end of the controller is respectively connected with the first pressure sensor, the second pressure sensor and the flow sensor, and the output end of the controller is respectively connected with the ventricular assist pump and the electric damping valve;
the controller receives data of the first pressure sensor, the second pressure sensor and the flow sensor, controls the rotating speed of the ventricular assist pump and controls the action of the electric damping valve.
As a further development of the utility model, a temperature sensor is also provided on the first line and/or the second line, which temperature sensor is electrically connected to the controller.
As a further improvement of the present utility model, the electric damping valve includes:
a housing;
the motor is arranged at the top of the shell and is connected with the output end of the controller;
one end of the screw is coaxially connected with the output end of the motor, and the other end of the screw extends into the shell from the top of the shell;
the upper pressing plate is arranged in the shell and can move up and down along with the screw rod when the screw rod rotates;
the lower pressure plate is arranged at the bottom of the shell, and the second pipeline is positioned between the upper pressure plate and the lower pressure plate and penetrates through the shell;
when the motor rotates, the screw rod is driven to rotate, and the upper pressing plate is driven to slide up and down in the shell.
As a further improvement of the utility model, the top end of the upper pressing plate is provided with a screw groove matched with the screw rod, and the side walls of the left end and the right end of the upper pressing plate are contacted with the inner wall of the shell.
As a further improvement of the utility model, the bottom of the upper pressing plate and the top of the lower pressing plate are respectively provided with corresponding convex blocks.
As a further improvement of the utility model, the upper end of the container tank is cylindrical, the lower end of the container tank is conical, the liquid outlet of the container tank is arranged at the lowest part of the container tank, and the liquid inlet of the container tank is arranged at the uppermost part of the container tank.
As a further improvement of the utility model, the top end of the container tank is provided with a sample adding port.
As a further improvement of the utility model, the outer wall of the container tank is provided with capacity scales, and the container tank is made of transparent materials.
As a further improvement of the utility model, the first pipeline and the second pipeline are made of transparent hoses.
As a further development of the utility model, the first pressure sensor and the second pressure sensor are arranged on the same horizontal plane.
As a further improvement of the utility model, the distance between the first pressure sensor and the liquid inlet of the auxiliary ventricular pump is smaller than or equal to 10cm, and the distance between the second pressure sensor and the liquid outlet of the auxiliary ventricular pump is smaller than or equal to 10cm.
As a further improvement of the utility model, the distance between the flow sensor and the second pressure sensor is 15-25cm, and the distance between the flow sensor and the electric damping valve is 15-25cm.
As a further improvement of the present utility model, the flow sensor is a non-contact flow sensor.
Compared with the prior art, the utility model has the following beneficial effects:
according to the automatic detection system for the auxiliary ventricular pump, disclosed by the utility model, the electric damping valve is controlled by the controller to automatically adjust the flow pressure in the second pipeline, so that the flow pressure of the auxiliary ventricular pump at different rotating speeds and under different pipeline loads can be automatically adjusted, all detection parameters can be automatically recorded, a data table and a curve are generated, the step and the flow for measuring the Q-H curve of the auxiliary ventricular pump are greatly simplified, more experimental data are obtained compared with a traditional manual method, the detection personal errors are reduced, and the Q-H curve is mapped more accurately.
Drawings
FIG. 1 is a schematic diagram of an automated detection system for a ventricular assist pump according to the present utility model;
FIG. 2 is a schematic diagram of an electric damping valve in an automated detection system for a ventricular assist pump according to the present utility model;
fig. 3 is a schematic diagram of a Q-H curve (lift-flow curve) detected by an automated detection system for a ventricular assist pump according to the present utility model.
Drawings
100. A container tank; 110. a sample adding port;
200. a ventricular assist pump;
H. a first pipeline;
l, a second pipeline;
300. an electric damping valve; 310. a housing; 320. a motor; 330. a screw; 340. an upper press plate; 350. a lower pressing plate;
400. a detection assembly; 410. a first pressure sensor; 420. a second pressure sensor; 430. a flow sensor; 440. a temperature sensor;
500. and a controller.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 to 2 are schematic structural views showing an embodiment of an automated inspection system for a ventricular assist pump according to the present utility model, wherein a main body portion thereof includes a canister 100, a first pipeline H, a second pipeline L, an electric damping valve 300, an inspection assembly 400, and a controller 500.
The container tank 100 is used for storing liquid to be detected, and simultaneously different amounts of liquid can simulate different cardiac preloads, the liquid outlet of the container tank 100 is connected with the liquid inlet of the ventricular assist pump 200 through the first pipeline H, and the liquid inlet of the container tank 100 is connected with the liquid outlet of the ventricular assist pump 200 through the second pipeline L. Preferably, in this embodiment, the upper end of the container tank 100 is cylindrical, the lower end is conical, the liquid outlet of the container tank 100 is disposed at the lowest part of the container tank 100, the liquid inlet of the container tank 100 is disposed at the uppermost part of the container tank 100, when the liquid circulates, bubbles are generated in the container tank 100 due to impact, if the bubbles enter the liquid inlet of the ventricular assist pump 200, the liquid outlet of the container tank 100 is disposed at the lowest end of the container tank 100 at one end of the conical shape, the liquid outlet of the container tank 100 is disposed above the container tank 100, so that the bubbles are prevented from entering the circulation inlet, the conical barrel replaces various blood containers in the traditional detection method, and the conical outlet at the lower end limits the bubbles possibly generated from entering the subsequent loop and the blood pump, thereby reducing experimental errors and protecting experimental devices. Preferably, the outer wall of the container can 100 is provided with capacity scales and the container can is made of transparent materials for the convenience of inspection personnel. The top of the container 100 is provided with a sample inlet 110 to facilitate pouring of liquids of different volumes. The canister 100 and the ventricular assist pump 200 form a complete circuit by the connection of the first line H and the second line L. Preferably, in the present embodiment, the first pipeline H and the second pipeline L are made of transparent hoses, such as PVC or transparent hoses made of other materials, so as to facilitate observation of whether bubbles exist in the pipelines, and the inner diameters of the first pipeline H and the second pipeline L may be 3/8 inch, 1/4 inch, 1/2 inch or other dimensions.
An electrically operated damping valve 300 is provided on the second line L between the canister 100 and the ventricular assist pump 200 for regulating the fluid flow pressure in the second line L while regulating the system load (simulating cardiac afterload). Specifically, the electric damping valve 300 includes a housing 310, a motor 320, a screw 330, an upper platen 340, and a lower platen 350. The motor 320 is mounted on the top of the housing 310 and connected to the output end of the controller 500, one end of the screw 330 is coaxially connected to the output end of the motor 320, the other end extends from the top of the housing 310 into the housing 310, the upper pressure plate 340 is mounted in the housing 310 and moves up and down along with the screw 330 when the screw 330 rotates, the lower pressure plate 350 is mounted on the bottom of the housing 310, and the second pipeline L is located between the upper pressure plate 340 and the lower pressure plate 350 and penetrates the housing 310. In this embodiment, the controller 500 controls the motor 320 to rotate, and the motor 320 drives the screw 330 to rotate, thereby driving the upper platen 340 to slide up and down in the housing 310. When in use, one end of the second pipeline L passes through the through hole arranged on the shell 310, so that the second pipeline L is positioned between the upper pressing plate 340 and the lower pressing plate 350, when the motor 320 rotates clockwise, the driving screw 330 rotates to drive the upper pressing plate 340 to push towards the direction of the second pipeline L, the second pipeline L is gradually clamped, and when the motor 320 rotates anticlockwise, the driving screw 330 rotates to drive the upper pressing plate 340 to push towards the direction far away from the second pipeline L, and the opening of the second pipeline L is gradually realized. The rotation angle of the motor 320 is positively correlated with the clamping degree of the screw 330, so that the clamping and opening of the second line L can be precisely controlled, thereby adjusting the liquid flow pressure in the second line L. Specifically, in the present embodiment, a screw groove adapted to the screw 330 is formed at the top end of the upper pressing plate 340, and the side walls at the left and right ends of the upper pressing plate 340 are in contact with the inner wall of the housing 310. When the motor 320 drives the screw 330 to move, the bottom of the screw 330 rotates in the screw groove provided at the top end of the upper pressing plate 340, thereby driving the screw 330 to slide up and down in the housing 310, and the side walls at the left and right ends of the upper pressing plate 340 are in contact with the inner wall of the housing 310, so that the stability of the upper pressing plate 340 during up and down sliding is further ensured.
Preferably, in the present embodiment, in order to improve the clamping force of the upper and lower pressure plates 340 and 350 on the pipeline, corresponding protrusions are provided at the bottom of the upper pressure plate 340 and the top of the lower pressure plate 350. When the device is used, the second pipeline L is positioned between the bottom convex block of the upper pressing plate 340 and the top convex block of the lower pressing plate 350, and the motor 320 drives the screw 320 to rotate, so that when the upper pressing plate 340 is driven to push towards the direction of the second pipeline L, the two convex blocks can further achieve better clamping effect on the second pipeline L, and the detection accuracy is further improved.
The sensing assembly 400 includes a first pressure sensor 410 disposed on the first line H, a second pressure sensor 420 disposed on the second line L, the second pressure sensor 420 disposed between the electric damping valve 300 and the ventricular assist pump 200, and a flow sensor 430 disposed between the second pressure sensor 420 and the electric damping valve 300. The first pressure sensor 410 is used for detecting the pressure before the pump, the second pressure sensor 420 is used for detecting the pressure after the pump, and the flow sensor 430 is used for detecting the flow rate of the liquid in the second pipeline L. Preferably, in this embodiment, in order to reduce errors and improve detection accuracy, the first pressure sensor 410 and the second pressure sensor 420 are disposed on the same horizontal plane, in addition, the first pressure sensor 410 needs to be as close to the liquid inlet of the ventricular assist pump 200 as possible, the distance between the liquid inlet of the ventricular assist pump 200 and the liquid inlet of the ventricular assist pump 200 is less than or equal to 10cm, the second pressure sensor 420 is mounted between the liquid outlet of the ventricular assist pump 200 and the electric damping valve 300, and needs to be as close to the liquid outlet of the ventricular assist pump 200 as possible, and the distance between the liquid outlet of the ventricular assist pump 200 and the liquid outlet of the ventricular assist pump 200 is less than or equal to 10cm, so as to ensure detection accuracy. In the present embodiment, the distance between the first pressure sensor 410 and the liquid inlet of the ventricular assist pump 200 and the distance between the second pressure sensor 420 and the liquid outlet of the ventricular assist pump 200 are set to 10cm.
Preferably, in the present embodiment, the flow sensor 430 is a non-contact flow sensor, specifically, the flow sensor 430 is an ultrasonic flow sensor, the flow sensor 430 is embedded outside the second pipeline L and does not contact with the liquid in the second pipeline L, the non-contact measurement is performed, and the ultrasonic wave is released from the flow sensor 430 side to receive the return ultrasonic wave, thereby detecting the flow rate of the liquid in the second pipeline L. In the present embodiment, the distance between the flow sensor 430 and the second pressure sensor 420 is 15-25cm, the distance between the flow sensor 430 and the electric damping valve 300 is 15-25cm, and preferably, the distance between the flow sensor 430 and the second pressure sensor 420 and the distance between the flow sensor 430 and the electric damping valve 300 are 20cm.
The input end of the controller 500 is connected with the first pressure sensor 410, the second pressure sensor 420 and the flow sensor 430, respectively, and the output end of the controller 500 is connected with the ventricular assist pump 200 and the electric damping valve 300, respectively. Wherein, the controller 500 receives data of the first pressure sensor 410, the second pressure sensor 420, the flow sensor 430 and the temperature sensor 440, and automatically controls the rotation speed of the ventricular assist pump 200 and controls the operation of the electric damping valve 300.
Preferably, in the present embodiment, in order to detect the temperature of the liquid in the pipeline in real time, a temperature sensor 440 is provided in the first pipeline H and/or the second pipeline L, and the temperature sensor 440 is electrically connected to the controller 500. In the present embodiment, the temperature sensor 440 is provided on the second line L near the tank 100.
Referring to fig. 1 to 3, an automated detection system for a ventricular assist pump according to this embodiment is specifically implemented as follows:
first, in the detection preparation stage, the solution is filled into the container tank 100 through the sample inlet 110, the container tank 100 is filled with the liquid in advance, and the first pipeline H, the ventricular assist pump 200 and the second pipeline L are automatically filled with the liquid under the action of gravity. The controller 500 then presets the rotational speed range of the ventricular assist pump 200 as well as the interval parameters of the different rotational speeds. In this embodiment, the rotational speed range may be set to 1000-5000rpm, and the interval parameter is set to 1000rpm, and the rotational speeds automatically measured by the system are Q-H curves at 1000rpm, 2000rpm, 3000rpm, 4000rpm, and 5000 rpm. It should be understood that the rotation speed range and the interval parameter in the present embodiment are not limited to the specific examples described above, and for example, the interval parameter may be set to 5000rpm or more or less, and the interval parameter may be set to 500rpm or other values as long as the detection requirements can be satisfied.
Then, the controller 500 controls the ventricular assist pump 200 to start in the formal detection stage, at the set first rotation speed, that is, 1000rpm preset in the present embodiment, the controller 500 controls the electric damping valve 300 to gradually and completely release from the completely closed state, under the condition that the electric damping valve 300 has different closing degrees to the second pipeline L, the first pressure sensor 410 detects the pressure of the liquid inlet of the ventricular assist pump 200 in real time, the second pressure sensor 420 detects the pressure of the liquid outlet of the ventricular assist pump 200 in real time, the flow sensor 430 detects the flow rate of the liquid in the second pipeline L in real time, the temperature sensor 440 detects the temperature of the liquid in the second pipeline L in real time and respectively transmits the temperature to the controller 500, the controller 500 regenerates the complete Q-H curve under different loading conditions of 1000rpm according to the transmitted inlet pressure, outlet pressure, flow rate parameter and temperature parameter, and when the first rotation speed set by the system detects that the electric damping valve 300 completely closes, the controller 500 controls the electric damping valve 300. Then the system automatically jumps to a preset second rotation speed, namely preset 2000rpm in the embodiment, the controller 500 controls the electric damping valve 300 from a fully closed state to gradually fully released, repeatedly detects the parameters and respectively transmits the parameters to the controller 500, and a Q-H curve of different loads at 2000rpm is regenerated.
Finally, the system automatically repeats the above operation, and sequentially measures Q-H curves of different loads at preset 3000rpm, 4000rpm and 5000 rpm. The rotation speed range and interval of the ventricular assist pump 200 are set by the controller 500, the damping size of the electric damping valve 300 is automatically adjusted by the system, parameters such as rotation speed, flow rate, lift, liquid outlet pressure of the ventricular assist pump 200 and liquid inlet pressure of the ventricular assist pump 200 are automatically recorded, Q-H curves under different rotation speeds are automatically generated, and after all preset rotation speeds are detected, the controller 500 controls the ventricular assist pump 200 to be closed and the electric damping valve 300 to be completely clamped. As shown in fig. 3, in this embodiment, the experimental medium is a glycerol-water mixture, and the system automatically records flow pressure detection parameters of the ventricular assist pump at different rotational speeds and under different pipeline loads, and generates a Q-H curve. Wherein, the abscissa is the flow rate at different detected rotational speeds, and the ordinate is the pressure difference (the difference between the outlet pressure after the pump and the inlet pressure before the pump). Through the standardization and unification of the whole set of detection equipment, the steps and the flow of determining the Q-H curve of the ventricular assist pump are greatly simplified, more experimental data are obtained compared with the traditional manual method, the detection human error is reduced, the system error is reduced as much as possible, and the detection is more accurate.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (13)
1. A ventricular assist pump automated detection system, comprising:
the liquid outlet of the container tank (100) is connected with the liquid inlet of the ventricular assist pump (200) through a first pipeline (H), and the liquid inlet of the container tank (100) is connected with the liquid outlet of the ventricular assist pump (200) through a second pipeline (L);
-an electric damping valve (300), said electric damping valve (300) being arranged on a second line (L) between the tank (100) and the ventricular assist pump (200);
a detection assembly (400), the detection assembly (400) comprising a first pressure sensor (410) disposed on a first line (H), a second pressure sensor (420) disposed on a second line (L), the second pressure sensor (420) disposed between the electric damping valve (300) and the ventricular assist pump (200), and a flow sensor (430) disposed between the second pressure sensor (420) and the electric damping valve (300);
the input end of the controller (500) is respectively connected with the first pressure sensor (410), the second pressure sensor (420) and the flow sensor (430), and the output end of the controller (500) is respectively connected with the ventricular assist pump (200) and the electric damping valve (300);
wherein the controller (500) receives data from the first pressure sensor (410), the second pressure sensor (420) and the flow sensor (430), and controls the rotational speed of the ventricular assist pump (200) and controls the operation of the electric damping valve (300).
2. The automated ventricular assist pump detection system of claim 1, wherein the first and/or second lines (H, L) are further provided with a temperature sensor (440), the temperature sensor (440) being electrically connected to the controller (500).
3. The automated ventricular assist pump detection system of claim 1, wherein the electrically-operated damping valve (300) comprises:
a housing (310);
the motor (320) is arranged at the top of the shell (310) and is connected with the output end of the controller (500);
the screw rod (330), one end of the screw rod (330) is coaxially connected with the output end of the motor (320), and the other end extends into the shell (310) from the top of the shell (310);
an upper pressing plate (340), wherein the upper pressing plate (340) is installed in the shell (310) and can move up and down along with the screw (330) when the screw (330) rotates;
a lower pressure plate (350), wherein the lower pressure plate (350) is installed at the bottom of the shell (310), and the second pipeline (L) is positioned between the upper pressure plate (340) and the lower pressure plate (350) and penetrates through the shell (310);
when the motor (320) rotates, the screw (330) is driven to rotate, and the upper pressing plate (340) is driven to slide up and down in the shell (310).
4. A ventricular assist pump automated detection system as claimed in claim 3, wherein: the top end of the upper pressing plate (340) is provided with a screw groove matched with the screw rod (330), and the side walls of the left end and the right end of the upper pressing plate (340) are contacted with the inner wall of the shell (310).
5. The automated ventricular assist pump detection system of claim 4 wherein: the bottom of the upper pressing plate (340) and the top of the lower pressing plate (350) are respectively provided with corresponding convex blocks.
6. An automated ventricular assist pump detection system as claimed in claim 1, wherein: the upper end of the container tank (100) is cylindrical, the lower end of the container tank is conical, the liquid outlet of the container tank (100) is arranged at the lowest part of the container tank (100), and the liquid inlet of the container tank (100) is arranged at the uppermost part of the container tank (100).
7. The automated ventricular assist pump detection system of claim 6, wherein: the top end of the container tank (100) is provided with a sample adding port (110).
8. The automated ventricular assist pump detection system of claim 7, wherein: the outer wall of the container tank (100) is provided with capacity scales, and the container tank (100) is made of transparent materials.
9. An automated ventricular assist pump detection system as claimed in claim 1, wherein: the first pipeline (H) and the second pipeline (L) are made of transparent hoses.
10. An automated ventricular assist pump detection system as claimed in claim 1, wherein: the first pressure sensor (410) and the second pressure sensor (420) are arranged on the same horizontal plane.
11. The automated ventricular assist pump detection system of claim 10, wherein: the distance between the first pressure sensor (410) and the liquid inlet of the ventricular assist pump (200) is smaller than or equal to 10cm, and the distance between the second pressure sensor (420) and the liquid outlet of the ventricular assist pump (200) is smaller than or equal to 10cm.
12. The automated ventricular assist pump detection system of claim 10, wherein: the distance between the flow sensor (430) and the second pressure sensor (420) is 15-25cm, and the distance between the flow sensor (430) and the electric damping valve (300) is 15-25cm.
13. An automated ventricular assist pump detection system as claimed in claim 1, wherein: the flow sensor (430) is a non-contact flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535857.6U CN219251395U (en) | 2022-09-22 | 2022-09-22 | Automatic detection system for ventricular assist pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535857.6U CN219251395U (en) | 2022-09-22 | 2022-09-22 | Automatic detection system for ventricular assist pump |
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| Publication Number | Publication Date |
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| CN219251395U true CN219251395U (en) | 2023-06-27 |
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| CN202222535857.6U Active CN219251395U (en) | 2022-09-22 | 2022-09-22 | Automatic detection system for ventricular assist pump |
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- 2022-09-22 CN CN202222535857.6U patent/CN219251395U/en active Active
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