Multifunctional combined type heart valve test experimental equipment

Abstract

The invention relates to the technical field of heart valve testing, in particular to multifunctional combined type heart valve testing experimental equipment which comprises a base station, a base body, a pressure adjusting assembly, a pace-making assembly and a circulation assembly, the base body, the pressure adjusting assembly, the pace-making assembly and the circulation assembly are fixedly installed above the base station, and the base body comprises an atrium simulation area, a ventricle simulation area and an artery simulation area. An atrium simulation area is formed in the upper part of the base body, a ventricle simulation area is fixedly communicated with the lower portion of the atrium simulation area, an artery simulation area is fixedly communicated with the lower portion of the ventricle simulation area, the communicating pipe is communicated with the atrium simulation area, the ventricle simulation area is communicated with the pace-making assembly, and the artery simulation area is communicated with the circulation assembly. Therefore, under the dynamic pressure, whether the multifunctional combined type heart valve leaks or not is tested, meanwhile, the diastole and contraction of the heart are simulated, then the trans-valve pressure difference of the multifunctional combined type heart valve is monitored in real time, and the problem that it is difficult to accurately test the trans-valve pressure difference and leakage or not of the multifunctional combined type heart valve under the dynamic pressure is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heart valve testing, and in particular to a multifunctional combined heart valve testing experimental device. Background Art

[0002] When the existing multifunctional combined heart valve is tested in vitro using an in vitro fluid circulation simulation system, it can only be tested in a stable fluid state, which makes it difficult to simulate the complex and dynamic pressure environment caused by factors such as breathing and body posture in blood flow, making it difficult to accurately test whether the multifunctional combined heart valve has leakage under dynamic pressure in actual use. If the artificial heart valve has leakage, the transvalvular pressure difference of the multifunctional combined heart valve under dynamic pressure is further increased.

[0003] Therefore, the present invention provides a multifunctional combined heart valve test experimental equipment to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is that it is difficult to accurately test the transvalvular pressure difference of a multifunctional combined heart valve under dynamic pressure and whether it is leaking.

[0005] The present invention provides the following technical solutions: a multifunctional combined heart valve test experimental equipment, comprising a base, a base, a voltage regulating assembly, a pacing assembly and a circulation assembly, wherein the base, the voltage regulating assembly, the pacing assembly and the circulation assembly are fixedly installed on the top of the base, the base comprises an atrial simulation area, a ventricular simulation area and an arterial simulation area, an atrial simulation area is opened inside the upper part of the base, a ventricular simulation area is fixedly connected to the bottom of the atrial simulation area, an arterial simulation area is fixedly connected to the bottom of the ventricular simulation area, the connecting tube is connected to the atrial simulation area, the ventricular simulation area is connected to the pacing assembly, and the arterial simulation area is connected to the circulation assembly.

[0006] The pressure regulating assembly includes a telescopic platform and a pressure water tank. The telescopic platform is fixedly installed above the base, and the pressure water tank is fixedly installed above the telescopic platform. One end of a connecting pipe is installed in the pressure water tank, and the other end of the connecting pipe is fixedly connected to the upper part of the base. The pacing assembly is fixed to the middle part of the base, and the circulation assembly is fixedly connected to the lower part of the base.

[0007] The ventricular simulation area includes an outer wall, a pressurization area and an inner wall. The inner wall is fixedly installed inside the outer wall, and a pressurization area is opened between the outer wall and the inner wall; the pacing component includes a piston air pump, and the pressurization area is fixedly connected to the piston air pump.

[0008] There are at least two atrial simulation areas, ventricular simulation areas and arterial simulation areas arranged in the horizontal direction. At least two connecting pipes corresponding to the atrial simulation areas are installed horizontally in the pressure water tank, and one end of the piston air pump is connected through at least two air pipes corresponding to the boosting areas.

[0009] The first pressure detector is fixedly installed in both the atrial simulation area and the arterial simulation area.

[0010] A solenoid valve is installed at the end height of the connecting pipe.

[0011] The pacing component also includes a pressure detector, and a second pressure detector is fixedly installed in the inner wall.

[0012] The circulation component includes a first liquid pipe, a recovery box, a second liquid pipe and a reflux pump. The artery simulation area is connected to the recovery box through the first liquid pipe. A reflux pump is fixedly installed in the recovery box. The reflux pump is connected to the pressure water tank through the second liquid pipe.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can simulate the atria, ventricles and arteries in the base to test the multifunctional combined heart valve, and cooperate with the first and second pressure detectors to monitor the pressure value in real time under dynamic pressure to test the leakage of the multifunctional combined heart valve under dynamic pressure. At the same time, the piston air pump is used to control the contraction and relaxation of the ventricular simulation area to simulate the contraction and relaxation of the heart, and then the transvalvular pressure difference of the multifunctional combined heart valve is monitored in real time under dynamic pressure, and the influence of the Frank-Starling mechanism on the multifunctional combined heart valve can also be simulated.

[0014] 2. The present invention has multiple valves installed horizontally at the atrium, ventricle and artery, which can improve the efficiency of testing the multifunctional combined heart valve. In addition, the telescopic table drives the pressure water tank to move up and down, and can also control the pressure in real time during the test, thereby simulating the pressure fluctuation of venous blood returning to the heart caused by breathing, bone compression, body posture and cardiac contraction and relaxation activities in real time, thereby facilitating the testing of the leakage and pressure bearing performance of the multifunctional combined heart valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the other side of the overall structure of the present invention; Figure 3 A schematic diagram of the structure of an artificial heart valve installed on the base of the present invention; Figure 4 It is a schematic cross-sectional view of the internal structure of the substrate of the present invention; Figure 5 It is a schematic diagram of the contraction and relaxation structure state of the ventricular simulation area of ​​the present invention; Figure 6 This is a schematic diagram of the downward movement state of the pressure water tank of the present invention; Figure 7 This is a schematic diagram of the state in which the pressure water tank of the present invention moves upward to increase pressure.

[0017] In the figure: 1. base; 2. base; 21. atrial simulation area; 22. ventricular simulation area; 221. outer wall; 222. pressurization area; 223. inner wall; 23. artery simulation area; 24. movable position; 25. first pressure detector; 26. solenoid valve; 27. artificial heart valve; 3. pressure regulating assembly; 31. telescopic table; 32. pressure water tank; 33. connecting pipe; 4. pacemaker assembly; 41. piston air pump; 42. ventilation tube; 43. second pressure detector; 5. circulation assembly; 51. first liquid pipe; 52. recovery box; 53. second liquid pipe; 54. reflux pump. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0021] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The disclosed embodiments are intended to solve the existing problem of difficulty in accurately testing the transvalvular pressure difference and leakage of a multifunctional combined heart valve under dynamic pressure. In view of this, the embodiment of the present disclosure proposes a multifunctional combined heart valve test experimental equipment, including a base 1, a base 2, a voltage regulating component 3, a pacing component 4 and a circulation component 5, the base 2, the voltage regulating component 3, the pacing component 4 and the circulation component 5 are fixedly installed on the base 1, the base 2 includes an atrial simulation area 21, a ventricular simulation area 22 and an arterial simulation area 23, the upper part of the base 2 is provided with an atrial simulation area 21, the lower part of the atrial simulation area 21 is fixedly connected with a ventricular simulation area 22 simulating the left and / or right ventricle, the lower part of the ventricular simulation area 22 is fixedly connected with an arterial simulation area 23 simulating the pulmonary artery and / or the aorta, the connecting tube 33 is connected with the atrial simulation area 21 for simulating venous blood returning to the heart, the ventricular simulation area 22 is connected with the pacing component 4 for simulating ventricular contraction and relaxation, and the arterial simulation area 23 is connected with the circulation component 5 for transporting the dextran solution in the arterial simulation area 23 back to the pressure water tank 32 for recycling.

[0023] The atrial simulation area 21 and the arterial simulation area 23 are respectively fixedly installed with multifunctional combined heart valves simulating the tricuspid valve and / or the mitral valve, the pulmonary valve and / or the aortic valve.

[0024] A moving position 24 is horizontally slidably installed in the atrial simulation area 21 and the arterial simulation area 23, and the multifunctional combined heart valve is fixedly installed in the moving position 24. By sliding the moving position 24 outward horizontally, it is convenient for the operator to install the multifunctional combined heart valve. After the multifunctional combined heart valve is installed, the moving position 24 is reset, so that the multifunctional combined heart valve is located in the atrial simulation area and / or the arterial simulation area 23 for testing.

[0025] The pressure regulating component 3 includes a telescopic platform 31 and a pressure water tank 32. The telescopic platform 31 is fixedly installed above the base 1, and the pressure water tank 32 is fixedly installed above the telescopic platform 31. One end of a connecting pipe 33 is installed in the pressure water tank 32, and the other end of the connecting pipe 33 is fixedly connected to the upper part of the base 2. The pacing component 4 is fixed to the middle part of the base 2, and the circulation component 5 is fixedly connected to the lower part of the base 2.

[0026] The pressure water tank 32 stores a liquid simulating blood. In the embodiment of the present disclosure, a dextran solution is selected. The dextran solution is similar to blood in physical properties such as density and viscosity, and can fully simulate blood for testing. Of course, in the embodiment of the present disclosure, any liquid in the prior art with physical properties similar to blood can be used to replace the dextran solution.

[0027] A multifunctional modular heart valve is installed in the base 2 for simulation testing, and the dextran solution in the pressure water tank 32 can flow into the multifunctional modular heart valve to simulate venous blood flowing into the atrium. As the dextran solution in the pressure water tank 32 enters the multifunctional modular heart valve, the multifunctional modular heart valve is tested for leakage by whether the dextran solution penetrates. The telescopic platform 31 can drive the pressure water tank 32 to move up and down through its own telescopic performance, so as to control the pressure of the dextran solution in the pressure water tank 32 when it is input, and then the fluctuation of the pressure of the venous blood returning to the heart caused by breathing, bone compression, body posture and cardiac contraction and relaxation activities can be simulated in real time. At the same time, the pressure applied by the dextran solution in the pressure water tank 32 to the multifunctional modular heart valve can also be controlled, so as to test the pressure resistance of the multifunctional modular heart valve.

[0028] The ventricular simulation area 22 includes an outer wall 221, a pressurization area 222 and an inner wall 223. The inner wall 223 is fixedly installed in the outer wall 221, and a pressurization area 222 is provided between the outer wall 221 and the inner wall 223; the pacing component 4 includes a piston air pump 41, and the pressurization area 222 is fixedly connected to the piston air pump 41 through a ventilation tube 42. The hardness of the outer wall 221 is greater than that of the inner wall 223. In the embodiment disclosed in the present invention, the outer wall 221 is made of hard metal, and the inner wall 223 is made of a flexible and easily deformable rubber material, and a specific airbag structure is selected. The outer wall 221 and the inner wall 223 are fixedly connected and the fixed connection points are arranged at intervals, thereby reserving the pressurization area 222.

[0029] It should be noted that the specific structure and principle of the piston air pump 41 are prior art and will not be described in detail.

[0030] After the dextran solution enters the ventricular simulation area 22, the piston air pump 41 starts to continuously switch to the pressurization area 222 to input air pressurization and extract air negative pressure, thereby controlling the space of the flexible and deformable inner wall 223 to expand and contract, thereby simulating the changes in the internal space and pressure during ventricular contraction. It should be noted that the piston air pump 41 can control the size and expansion and contraction of the space in the inner wall 223 according to the input or extraction of air, thereby simulating the influence of the Frank-Starling mechanism on the multifunctional combined heart valve.

[0031] At least two atrial simulation areas 21, ventricular simulation areas 22 and arterial simulation areas 23 are arranged in the horizontal direction. At least two connecting pipes 33 corresponding to the atrial simulation areas 21 are installed in the pressure water tank 32 in the horizontal direction. The output end of the piston air pump 41 is connected through at least two ventilation pipes 42 corresponding to the pressurization areas 222. Multiple atrial simulation areas 21, ventricular simulation areas 22 and arterial simulation areas 23 in the horizontal direction can work synchronously or asynchronously, so that multiple multifunctional combined heart valves can be tested simultaneously or asynchronously, thereby improving the efficiency of testing the multifunctional combined heart valve.

[0032] It should be noted that the atrial simulation area 21, ventricular simulation area 22 and arterial simulation area 23 in the present application can be made by inverted molds of the human heart structure, so that the internal structures of the atrial simulation area 21, ventricular simulation area 22 and arterial simulation area 23 are consistent with the human heart structure.

[0033] The first pressure detector 25 is fixedly installed in both the atrial simulation area 21 and the arterial simulation area 23. The atrial simulation area 21 and the arterial simulation area 23 are provided with installation openings at the horizontal position of the multifunctional combined heart valve installation position, and the horizontal position of the installation openings is the same as that of the multifunctional combined heart valve, and the first pressure detector 25 is fixedly installed in the installation openings.

[0034] By fixedly installing the first pressure sensor in the installation port at the same level as the multifunctional combined heart valve, the first pressure sensor can detect changes in pressure values ​​in the atrium and / or artery to test whether the multifunctional combined heart valve has leakage. In addition, the pressure detector can also be used to display the pressure to which the multifunctional combined heart valve is subjected, thereby testing the pressure resistance of the multifunctional combined heart valve.

[0035] The end of the connecting pipe 33 is provided with a solenoid valve 26. The solenoid valve 26 is used to control the time for the dextran solution in the pressure water tank 32 to enter the atrial simulation area 21 at a stable flow rate, thereby controlling the amount of the dextran solution entering, and further actively controlling and setting the total amount and pressure of the dextran solution in the atrial simulation area 21, thereby facilitating active setting and testing of the leakage and pressure resistance of the multifunctional combined heart valve.

[0036] The pacing component 4 also includes a second pressure detector 43, which is fixedly installed in the inner wall 223. The second pressure detector 43 can monitor the change of pressure in the inner wall 223, and cooperate with the pressure value monitored by the first pressure detector 25 in the atrial simulation area 21 and the arterial simulation area 23 to monitor in real time whether the multifunctional combined heart valve is leaking. At the same time, while the piston air pump 41 drives the inner wall 223 to contract and relax to simulate the heart, the second pressure detector 43 can also cooperate with the first pressure detector 25 to display the pressure difference, so that in the process of the dextran solution passing through the artificial heart valve 27 due to the pressure difference, the instantaneous pressure difference displayed by the first pressure detector 25 and the second pressure detector 43 is used to reflect the transvalvular pressure difference, and then cooperate with the pressure dynamically controlled by the pressure regulating component 3 to reflect the transvalvular pressure difference under dynamic pressure.

[0037] It should be noted that the first and second pressure detectors 43 can be any structure or device capable of detecting pressure in the prior art, and a pressure transmitter is used in the embodiment of the present disclosure.

[0038] The circulation assembly 5 includes a first liquid pipe 51, a recovery box 52, a second liquid pipe 53 and a reflux pump 54. The artery simulation area 23 is connected to the recovery box 52 through the first liquid pipe 51. A reflux pump 54 is fixedly installed in the recovery box 52, and the reflux pump 54 is connected to the pressure water tank 32 through the second liquid pipe 53. After the dextran solution enters the artery simulation area 23, it directly enters the recovery box 52 through the first liquid pipe 51, so that the dextran solution is transported to the pressure water tank 32 again through the reflux pump 54 and the second liquid pipe 53 for recycling.

[0039] It should be noted that the second liquid passage 53 is a hose or a retractable bellows structure, so that it can be stably connected to the pressure water tank 32 that can be raised and lowered.

[0040] A control console for controlling the base 2 , the voltage regulating component 3 , the pacing component 4 and the circulation component 5 is fixedly mounted on the base 1 .

[0041] At the beginning of the test, the operator pulls out the moving body horizontally and installs the multifunctional combined heart valve in the moving body, then resets the moving body to enter the atrial simulation area 21 and the arterial simulation area 23 for testing, and then the operator opens the solenoid valve 26 to control a certain amount of dextran solution in the pressure water tank 32 to enter the atrial simulation area 21. In the process of the dextran solution entering the atrial simulation area 21, the operator controls the telescopic table 31 to drive the pressure water tank 32 to move up and down, thereby controlling the pressure of the dextran solution entering the atrial simulation area 21 to fluctuate, thereby simulating in real time the fluctuation of the pressure of venous blood returning to the heart caused by breathing, bone compression, body posture and cardiac contraction and relaxation activities. After the dextran solution enters the atrial simulation area 21, it stays for a certain period of time. During this process, the first pressure detector 25 detects in real time whether the pressure value in the atrial simulation area 21 is stable, thereby judging whether the multifunctional combined heart valve in the atrial simulation area 21 is leaking.

[0042] Then the piston inflation pump is started, and the piston air pump 41 is started to continuously switch to the pressurization area 222 to input air pressurization and extract air negative pressure, thereby generating a pressure difference between the atrial simulation area 21 and the ventricular simulation area 22, and then allowing the dextran solution in the atrial simulation area 21 to enter the atrial simulation area 21.

[0043] After the dextran solution enters the ventricular simulation area 22, the operator controls the piston-type inflation pump through the central control console on the base 1 to input a small amount of air to slightly increase the pressure in the ventricular simulation area 22, thereby detecting through the second pressure detector 43 whether the pressure in the ventricular simulation area 22 is stable, and then judging whether the multifunctional combined heart valve in the atrial simulation area 21 and the arterial simulation area 23 is leaking.

[0044] After testing whether the multifunctional combined heart valve in the arterial simulation area 23 is leaking, the operator increases the amount of air input or extracted by the piston inflation pump, thereby creating a pressure difference between the ventricular simulation area 22 and the arterial simulation area 23, thereby allowing the dextran solution to enter the arterial simulation area 23.

[0045] During this process, the first pressure detector 25 and the second pressure detector 43 cooperate with each other to display the pressure difference between the atrial simulation area 21 and the ventricular simulation area 22, so that when the pressure value in the atrial simulation area 21 decreases, the transvalvular pressure difference of the blood is reflected according to the instantaneous difference between the first pressure detector 25 and the second pressure detector 43.

[0046] After entering the artery simulation area 23 , the dextran solution enters the recovery tank 52 through the first liquid pipe 51 , and is then transported to the pressure water tank 32 again through the reflux pump 54 and the second liquid pipe 53 for recycling.

[0047] Thus, the leakage of the multifunctional combined heart valve and the pressure difference across the valve are detected.

[0048] It needs to be explained again that, since the multifunctional combined heart valve combines a variety of components or materials with different functions, the performance of each multifunctional combined heart valve is different. The embodiment of the present disclosure can actively adjust and control the pressure of the dextran solution entering the atrial simulation area 21, as well as the pressure difference between the atrial simulation area 21, the pulsation simulation area and the ventricular simulation area 22. Therefore, the embodiment of the present disclosure is more suitable for testing multifunctional combined heart valves with different performances.

[0049] Finally, it should be noted that, under dynamic pressure, the embodiment of the present disclosure tests whether the artificial heart valve 27 is leaking by checking whether the pressure values ​​displayed in real time by the first pressure detector 25 and the second pressure detector 43 are the same as the standard pressure value, and the standard pressure value is pre-set.

[0050] Embodiment 2: The embodiment of the present disclosure is established on the basis of embodiment 1 and only records the differences from embodiment 1, and the similarities are not repeated.

[0051] In the disclosed embodiment, the telescopic platform 31 includes a base plate and a hydraulic telescopic rod. The extension and retraction of the hydraulic telescopic rod can drive the base plate and the pressure water tank 32 to move up and down, thereby actively controlling the pressure in the atrial simulation area 21 .

[0052] During the process of the dextran solution entering the atrial simulation area 21 to detect whether the multifunctional combined heart valve is leaking, at this time, the piston air pump 41 has not been started, and the solenoid valve 26 is in a normally open state. The operator can control the hydraulic telescopic rod to extend, thereby controlling the pressure increase in the atrial simulation area 21, and then detecting whether the multifunctional combined heart valve is permeable and has pressure-bearing performance.

[0053] The disclosed embodiment can adjust the pressure of the dextran solution entering the atrial simulation area 21 at any time during the leakage test, thereby improving the flexibility during use and facilitating testing.

[0054] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional combined heart valve test experimental device, comprising a base (1), a base body (2), a voltage regulating component (3), a pacing component (4) and a circulation component (5), wherein the base body (2), the voltage regulating component (3), the pacing component (4) and the circulation component (5) are fixedly mounted on the base (1), characterized in that: The base (2) comprises an atrial simulation area (21), a ventricular simulation area (22) and an arterial simulation area (23); the upper part of the base (2) is provided with the atrial simulation area (21); the lower part of the atrial simulation area (21) is fixedly connected to the ventricular simulation area (22); the lower part of the ventricular simulation area (22) is fixedly connected to the arterial simulation area (23); the connecting tube (33) is connected to the atrial simulation area (21); the ventricular simulation area (22) is connected to the pacing component (4); and the arterial simulation area (23) is connected to the circulation component (5).

2. The multifunctional combined heart valve test experimental equipment according to claim 1, characterized in that: The pressure regulating component (3) comprises a telescopic platform (31) and a pressure water tank (32); the telescopic platform (31) is fixedly mounted above the base (1); the pressure water tank (32) is fixedly mounted above the telescopic platform (31); one end of a connecting pipe (33) is mounted in the pressure water tank (32); the other end of the connecting pipe (33) is fixedly connected to the upper part of the base (2); the pacing component (4) is fixed to the middle part of the base (2); and the circulation component (5) is fixedly connected to the lower part of the base (2).

3. The multifunctional combined heart valve test experimental equipment according to claim 2, characterized in that: The ventricular simulation area (22) comprises an outer wall (221), a pressurization area (222) and an inner wall (223); the inner wall (223) is fixedly mounted inside the outer wall (221); and a pressurization area (222) is provided between the outer wall (221) and the inner wall (223); the pacing component (4) comprises a piston air pump (41); and the pressurization area (222) is fixedly connected to the piston air pump (41).

4. The multifunctional combined heart valve test experimental equipment according to claim 3, characterized in that: At least two of the atrial simulation area (21), ventricular simulation area (22) and arterial simulation area (23) are arranged in the horizontal direction. At least two connecting pipes (33) corresponding one to one with the atrial simulation area (21) are installed in the pressure water tank (32) in the horizontal direction. The output end of the piston air pump (41) is connected through at least two air pipes corresponding one to one with the pressurization area (222).

5. The multifunctional combined heart valve test experimental equipment according to claim 4, characterized in that: A first pressure detector (25) is fixedly installed in both the atrial simulation area (21) and the artery simulation area (23).

6. The multifunctional combined heart valve test experimental device according to claim 5, characterized in that: A solenoid valve (26) is installed at a height of the end of the connecting pipe (33).

7. The multifunctional combined heart valve test experimental device according to claim 6, characterized in that: The pacing component (4) further comprises a second pressure detector (43), and the second pressure detector (43) is fixedly installed in the inner wall (223).

8. The multifunctional combined heart valve test experimental device according to claim 7, characterized in that: The circulation assembly (5) comprises a first liquid-passing pipe (51), a recovery box (52), a second liquid-passing pipe (53) and a reflux pump (54); the artery simulation area (23) is connected to the recovery box (52) via the first liquid-passing pipe (51); a reflux pump (54) is fixedly installed in the recovery box (52); and the reflux pump (54) is connected to the pressure water tank (32) via the second liquid-passing pipe (53).

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