Real-time wear test device for cardiovascular implant mitral / tricuspid valve

Abstract

The invention relates to a real-time wear test device for a cardiovascular implant mitral valve / tricuspid valve, which comprises a plurality of test mechanisms, and each test mechanism comprises a first compliance adjusting module, a second compliance adjusting module, a liquid flowing pipeline and a driving module, a valve carrier module and a return pipe are connected between the second compliance adjusting module and the first compliance adjusting module; one end of the liquid flowing pipeline is communicated with the first compliance adjusting module, and the other end is connected with the driving module; test liquid sequentially flows through the liquid flowing pipeline, the first compliance adjusting module, the backflow pipe, the second compliance adjusting module and the valve carrier module and flows back into the first compliance adjusting module and the liquid flowing pipeline so as to perform circulating reciprocating motion. According to the invention, a test environment highly similar to human physiological conditions can be simulated, so that the credibility and the accuracy of test results of the mitral valve and the tricuspid valve are ensured, and a real and reliable basis is provided for evaluating the service life of the mitral valve and the tricuspid valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of mitral valve and tricuspid valve wear testing, and in particular relates to a real-time wear testing device for a mitral valve / tricuspid valve of a cardiovascular implant. Background Art

[0002] The human heart has four valves, divided according to the direction of blood flow: the aortic valve, the pulmonary valve, and the mitral valve and tricuspid valve. Real-time wear testing of artificial heart valves requires a close simulation of human physiological conditions, such as physiological pressure curves and pulse frequency. This requires more than just providing fluid circulation; the long-term dynamic opening and closing of the artificial heart valves must be examined under these conditions.

[0003] Currently, most of the test equipment for the mitral and tricuspid valves on the market can only provide simulated liquid pulsating circulation, but cannot provide conditions close to human physiological conditions. For example, how to make the valve open and close normally at a frequency close to the human pulse, and how to make the pressure curve before and after the valve opening and closing conform to the corresponding physiological curve. If the above conditions are not met, the credibility and accuracy of the test results obtained will be poor, and it will be impossible to accurately evaluate the service life of the mitral / tricuspid valve. Summary of the Invention

[0004] The object of the present invention is to provide a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant, so as to solve the problem of poor accuracy of wear test results.

[0005] The real-time wear test device for the mitral valve / tricuspid valve of the cardiovascular implant of the present invention is implemented as follows: A real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant comprises a plurality of test mechanisms arranged side by side, wherein the test mechanisms include a first compliance adjustment module; a second compliance adjustment module, wherein a valve carrier module and a return tube are connected to the first compliance adjustment module; a liquid flow conduit, one end of which is in communication with the first compliance adjustment module; a driving module connected to the other end of the liquid flow conduit and configured to provide power to the test liquid in the test mechanism; The test liquid flows through the liquid flow pipe, the first compliance adjustment module, the return pipe, the second compliance adjustment module and the valve carrier module in sequence, and flows back into the first compliance adjustment module and the liquid flow pipe to perform a cyclic reciprocating motion.

[0006] Furthermore, the first compliance adjustment module includes a first adjustment box that is in communication with the valve carrier module, the return pipe, and the interior of the liquid flow pipe respectively; A one-way valve is installed in the inner cavity of the first regulating box for connecting the valve carrier module and the return pipe; A first rectifying valve plate is provided on the lower side of the one-way valve; A first exhaust switch is provided on the top of the first regulating box; A drain outlet is provided at the bottom of the first regulating box; A first observation window corresponding to the valve carrier module is provided on a side of the first adjustment box facing away from the valve carrier module; A second observation window corresponding to the return pipe is provided on a side of the first regulating box body facing away from the return pipe.

[0007] Furthermore, the second compliance adjustment module includes a second adjustment box connected to the valve carrier module and the return tube respectively; A damping adjustment component is provided at the bottom of the second adjustment box; The damping adjustment assembly includes an energy cavity provided at the bottom of the second adjustment box, a diaphragm provided between the second adjustment box and the energy cavity, and a spring provided below the diaphragm; The top of the second regulating box is provided with a liquid storage cavity communicated with the interior thereof, and the liquid storage cavity is provided with a second exhaust switch.

[0008] Furthermore, a throttle valve and a second rectifying valve plate are installed in the inner cavity of the second regulating box for connecting the valve carrier module and the return pipe.

[0009] Furthermore, the valve carrier module includes an outflow end clamp connected to the first compliance adjustment module, an inflow end clamp connected to the second compliance adjustment module, and a valve carrier installed between the outflow end clamp and the inflow end clamp, and the cardiovascular implant is placed in the valve carrier; Pressure sensors are respectively installed on the outflow end fixture and the inflow end fixture.

[0010] Furthermore, the return pipe is arranged above the valve carrier module, and a return throttle valve is installed on the return pipe.

[0011] Furthermore, the liquid flow conduit is located below the valve carrier module; The liquid flow conduit includes a first flow conduit communicated with the driving module, and a second flow conduit telescopically arranged at a free end of the first flow conduit and connected to the first compliance adjustment module.

[0012] Furthermore, the driving module includes a driving member, a sleeve mounted on a power output end of the driving member, and a pusher located in the sleeve and connected to a power output rod of the driving member, wherein an inner cavity of the sleeve facing away from the pusher is in communication with the liquid flow conduit; The driving component is a voice coil motor or a cylinder.

[0013] Furthermore, the liquid flow pipes of each test mechanism are mounted on a main board, and the main board is provided with a first through hole for connecting the corresponding liquid flow pipe with the driving module; A heating plate is provided on one side of the main board facing the driving module.

[0014] Furthermore, a connecting sleeve is provided on the side of the driving module facing the mainboard, the internal part of which is connected to the corresponding liquid flow pipeline, an exhaust hole is provided on the top of the connecting sleeve, a lower exhaust joint is installed on the exhaust hole, an exhaust cavity is provided on the top of the mainboard, an upper exhaust joint is installed on the side of the exhaust cavity, the lower exhaust joint is connected to the upper exhaust joint through an air pipe, and a third exhaust switch is provided on the top of the exhaust cavity.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects: The present invention cooperates with a first compliance adjustment module, a second compliance adjustment module, a valve carrier module, a return tube, a liquid flow tube and a drive module to allow the test liquid to circulate reciprocatingly therein, thereby simulating a test environment that is highly similar to the physiological conditions of the human body, thereby ensuring the credibility and accuracy of the mitral valve / tricuspid valve test results and providing a real and reliable basis for evaluating the service life of the mitral valve / tricuspid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 This is a structural diagram from a first perspective of a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 2 This is a structural diagram from a second perspective of a real-time wear test device (without a box) for a cardiovascular implant mitral valve / tricuspid valve according to a preferred embodiment of the present invention; Figure 3 4 is a cross-sectional view of a first compliance adjustment module of a real-time wear testing device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 4 is a cross-sectional view of a second compliance adjustment module of a real-time wear testing device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 5This is an exploded view of a valve carrier module of a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 6 This is an exploded view of a liquid flow channel of a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 7 This is an exploded view of the driving module, heating plate and main board of a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; Figure 8 1 is a cross-sectional view of a driving module, a heating plate, and a main plate of a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant according to a preferred embodiment of the present invention; In the figure: first compliance adjustment module 1, first adjustment box 1-1, valve body block 1-2, base cover 1-3, first valve carrier interface 1-4, first return pipe interface 1-5, one-way valve 1-6, first exhaust switch 1-7, drain port 1-8, first observation window 1-9, second observation window 1-10, first flow pipe interface 1-11, first rectifying valve plate 1-12, second compliance adjustment module 2, second adjustment box 2-1, second return pipe interface 2-2, second valve carrier interface 2-3, energy chamber 2-4, diaphragm 2-5, spring 2-6, diaphragm clamp 2-7, spring base 2-8, damping adjustment valve 2-9, liquid storage chamber 2-10, second exhaust switch 2-11, throttle valve 2-12, second rectifying valve plate 2-13, liquid Flow pipe 3, first flow pipe 3-1, second flow pipe 3-2, drive module 4, voice coil motor 4-1, sliding sleeve 4-2, push piece 4-3, motor bracket 4-4, connecting sleeve 4-5, exhaust hole 4-6, lower exhaust joint 4-7, valve carrier module 5, outflow end clamp 5-1, inflow end clamp 5-2, valve carrier 5-3, accommodating chamber 5-4, pressure sensor 5-5, return pipe 6, return throttle valve 6-1, high-speed camera mechanism 7, light source fixing block 7-1, light source 7-2, camera 7-3, camera bracket 7-4, support rod 8, box body 9, box body base 10, main board 11, first through hole 11-1, exhaust chamber 11-2, upper exhaust joint 11-3, third exhaust switch 11-4, heating plate 12, second through hole 12-1. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0020] like Figure 1-8 As shown, a real-time wear test device for a mitral valve / tricuspid valve of a cardiovascular implant comprises a plurality of test mechanisms arranged side by side, wherein the test mechanisms comprise a first compliance adjustment module 1, a second compliance adjustment module 2, a liquid flow conduit 3 and a drive module 4, a valve carrier module 5 and a return pipe 6 are connected between the second compliance adjustment module 2 and the first compliance adjustment module 1; one end of the liquid flow conduit 3 is communicated with the first compliance adjustment module 1; the drive module 4 is connected to the other end of the liquid flow conduit 3 for providing power for the test liquid in the test mechanism; the test liquid flows through the liquid flow conduit 3, the first compliance adjustment module 1, the return pipe 6, the second compliance adjustment module 2 and the valve carrier module 5 in sequence, and flows back to the first compliance adjustment module 1 and the liquid flow conduit 3 to perform a cyclic reciprocating motion.

[0021] Each test mechanism forms a test channel for testing a test valve. In this embodiment, three test mechanisms are arranged side by side, allowing simultaneous testing of three test valves. The number of test mechanisms is not limited to the three used in this embodiment; the number can be adjusted as needed.

[0022] The first compliance adjustment module 1 , the return pipe 6 , the second compliance adjustment module 2 and the valve carrier module 5 form a circulating flow channel, and the driving module 4 provides power to the test liquid in the circulating flow channel through the liquid flow pipe 3 .

[0023] In order to form a circulatory flow channel, the first compliance adjustment module 1 includes a first adjustment box 1 - 1 which is in communication with the valve carrier module 5 , the return tube 6 and the interior of the liquid flow pipe 3 respectively.

[0024] The first regulating box 1-1 is a structure with openings at the top and bottom, the top of which is closed by a valve block 1-2, and the bottom of which is closed by a base cover 1-3.

[0025] The first adjustment box 1-1 is provided with a first valve carrier interface 1-4 for connecting the valve carrier module 5 and a first return tube interface 1-5 for connecting the return tube 6 on the side facing the second compliance adjustment module 2. The first return tube interface 1-5 and the first valve carrier interface 1-4 are located on the same side of the first adjustment box 1-1, and the first return tube interface 1-5 is located above the first valve carrier interface 1-4.

[0026] During the test, the test liquid flows from the first regulating box 1-1 into the return pipe 6, then enters the second compliance regulating module 2, and finally flows back to the first regulating box 1-1 through the valve carrier module 5. In order to control the flow direction of the test liquid in the above process, a one-way valve 1-6 is installed in the inner cavity of the first regulating box 1-1 for connecting the valve carrier module 5 and the return pipe 6.

[0027] The valve carrier module 5 is located below the return pipe 6, and the one-way valve 1-6 is a valve body that only allows the test liquid to flow from bottom to top, thereby being able to control the flow direction of the test liquid to the first regulating box 1-1 - return pipe 6 - second compliance regulating module 2 - valve carrier module 5 - first regulating box 1-1.

[0028] A first rectifying valve plate 1 - 12 is provided on the lower side of the one-way valve 1 - 6 .

[0029] Among them, the valve body block 1-2 at the top of the first regulating box 1-1 extends into the inner cavity of the first regulating box 1-1 and extends to the lower side of the first reflux pipe interface 1-5, and a cavity connected to the inner cavity of the first regulating box 1-1 is provided in the valve body block 1-2 to ensure that the test liquid smoothly enters the reflux pipe 6. The first rectifier valve plate 1-12 is fixed to the bottom of the valve body block 1-2 by means of screws and other connecting parts, and the one-way valve 1-6 is installed on the upper side of the first rectifier valve plate 1-12. In this way, when the valve body block 1-2 is disassembled, the first rectifier valve plate 1-12 and the one-way valve 1-6 can be inspected and replaced, and the operation is more convenient.

[0030] The arrangement of the first rectifying valve plate 1-12 can improve the flow velocity distribution of the test liquid, reduce turbulence and vortex, and lower flow resistance.

[0031] When the test liquid is injected into the test mechanism, in order to facilitate the discharge of gas in the first regulating box 1-1, a first exhaust switch 1-7 is provided on the top of the first regulating box 1-1.

[0032] The first exhaust switch 1-7 is installed on the valve body block 1-2.

[0033] In order to facilitate the discharge of the test liquid after the test is completed, a drain port 1-8 is provided at the bottom of the first regulating box 1-1.

[0034] The drain port 1-8 is provided at the bottom of the base cover plate 1-3.

[0035] In order to facilitate observation of the test status of the test valve in the valve carrier module 5 during the test, a first observation window 1 - 9 corresponding to the valve carrier module 5 is provided on the side of the first adjustment box 1 - 1 facing away from the valve carrier module 5 .

[0036] In order to observe the corresponding test conditions through the above-mentioned first observation window 1-9, the test device also includes a high-speed camera mechanism 7 cooperated with the first observation window 1-9, the high-speed camera mechanism 7 includes a light source fixing block 7-1 assembled outside the first observation window 1-9, a light source 7-2 installed on the periphery of the light source fixing block 7-1, and a camera 7-3 facing the outside of the light source fixing block 7-1, and the camera 7-3 is fixed on the camera bracket 7-4 at the outer end of the light source fixing block 7-1.

[0037] The high-speed camera mechanism 7 is a movable device, which can be switched on various test mechanisms of the test device and placed on the test mechanism that needs to be observed as needed.

[0038] Among them, the camera 7-3 can adopt a high frame rate visual industrial camera 7-3, supplemented by a light source 7-2, software and other control systems. The lens passes through the first observation window 1-9 to record and observe the opening and closing of the test valve in real time, and is connected to the computer through a data communication line to analyze, record and save the collected data.

[0039] In order to facilitate observation of the flow of the test liquid in the reflux pipe 6 during the test, a second observation window 1 - 10 corresponding to the reflux pipe 6 is provided on the side of the first regulating box 1 - 1 facing away from the reflux pipe 6 .

[0040] With respect to the situation in the reflux pipe 6 , the operator can directly visually observe the situation through the second observation window 1 - 10 without the aid of the camera 7 - 3 or the like.

[0041] In order to form a circulatory flow channel, the second compliance adjustment module 2 includes a second adjustment box 2 - 1 which is in communication with the valve carrier module 5 and the return tube 6 respectively.

[0042] Among them, the second regulating box 2-1 is provided with a second return pipe interface 2-2 and a second valve carrier interface 2-3 in sequence from top to bottom on the side facing the first regulating box 1-1 to facilitate connecting the return pipe 6 and the valve carrier module 5.

[0043] In order to receive and store the energy generated by the driving module 4 pushing the liquid to flow, a damping adjustment component is provided at the bottom of the second adjustment box 2-1.

[0044] Specifically, the damping adjustment assembly includes an energy cavity 2-4 arranged at the bottom of the second adjustment box 2-1, a diaphragm 2-5 arranged between the second adjustment box 2-1 and the energy cavity 2-4, and a spring 2-6 arranged below the diaphragm 2-5.

[0045] Among them, the bottom of the second adjustment box 2-1 is designed to be open, the energy cavity 2-4 is installed at the bottom of the second adjustment box 2-1 by bolts, the diaphragm 2-5 is fixed between the second adjustment box 2-1 and the energy cavity 2-4 by the diaphragm clamp 2-7, and the spring 2-6 is installed in the energy cavity 2-4 below the diaphragm 2-5 and is positioned by the spring base 2-8.

[0046] After the driving module 4 pushes the test liquid into the second regulating box 2-1, the damping adjustment component can receive the energy generated by pushing the test liquid to flow, causing its diaphragm 2-5 to deform downward while compressing the spring 2-6 to form an energy storage component. When the driving module 4 returns, the damping adjustment component releases energy and pushes the test liquid through the test valve.

[0047] Preferably, a damping regulating valve 2-9 is threadedly installed on the bottom of the energy cavity 2-4, and two air holes are provided on the end face thereof, while four air holes are also provided on the end face of the spring base 2-8. The positions of the two air holes are changed by rotating the damping regulating valve 2-9 to adjust the flux between the two air holes and the air holes on the end face of the spring base 2-8, thereby achieving the purpose of adjusting the ability of the energy cavity 2-4 to receive the buffering test liquid.

[0048] In order to form an energy storage component on the top of the second regulating box 2-1, a liquid storage chamber 2-10 communicating with the interior of the second regulating box 2-1 is provided on the top of the second regulating box 2-1, and a second exhaust switch 2-11 is provided on the liquid storage chamber 2-10.

[0049] Among them, the top of the second regulating box 2-1 is also designed to be open. When the test liquid passes through the one-way valve 1-6 and flows through the reflux pipe 6 into the second regulating box 2-1, the excess liquid will cause the liquid level in the liquid storage chamber 2-10 to rise, thereby making it a short-term energy storage component.

[0050] When the test liquid is injected into the test mechanism before the test begins, in order to conveniently exhaust the air in the second regulating box 2-1, a second exhaust switch 2-11 is installed on the top of the liquid storage chamber 2-10.

[0051] A throttle valve 2 - 12 and a second rectifying valve plate 2 - 13 are installed in the inner cavity of the second regulating box 2 - 1 for connecting the valve carrier module 5 and the return pipe 6 .

[0052] The throttle valve 2-12 is provided to adjust the degree of opening and closing of the test valve by changing the flow rate of the test liquid in the circulation channel.

[0053] In order to facilitate the installation of the throttle valve 2-12, the inner diameter of the inner cavity of the second regulating box 2-1 where the throttle valve 2-12 is located is smaller to form a reduced diameter section, so as to control the flow rate of the test liquid. The throttle valve 2-12 is arranged on the side of the first regulating box 1-1, and its regulating end extends into the inner cavity of the reduced diameter section.

[0054] The second rectifying valve plate 2-13 serves the same function as the first rectifying valve plate 1-12, namely, to improve the flow velocity distribution of the test liquid, reduce turbulence and vortices, and lower flow resistance. The bottom of the reduced diameter section forms an end surface, and the second rectifying valve plate 2-13 is mounted to this end surface using screws or other fasteners. It is located below the throttle valve 2-12.

[0055] In order to install the test valve in the valve carrier module 5, the valve carrier module 5 includes an outflow end clamp 5-1 connected to the first compliance adjustment module 1, an inflow end clamp 5-2 connected to the second compliance adjustment module 2, and a valve carrier 5-3 installed between the outflow end clamp 5-1 and the inflow end clamp 5-2, and the cardiovascular implant is placed in the valve carrier 5-3.

[0056] The outflow fixture 5-1 is mounted on the first valve carrier interface 1-4 of the first regulating housing 1-1, with a sealing ring interposed between them. The inflow fixture 5-2 is mounted on the second valve carrier interface 2-3 of the second regulating housing 2-1, with a sealing ring interposed between them. A receiving cavity 5-4 is provided on opposite sides of the outflow fixture 5-1 and the inflow fixture 5-2. The valve carrier 5-3 is positioned within this receiving cavity 5-4, with sealing rings interposed between the valve carrier 5-3 and both the inflow fixture 5-2 and the outflow fixture 5-1. The cardiovascular implant, i.e., the test valve, is placed within the valve carrier 5-3.

[0057] In order to be able to test the test liquid pressure in the inflow end fixture 5 - 2 and the outflow end fixture 5 - 1 in real time, pressure sensors 5 - 5 are respectively installed on the outflow end fixture 5 - 1 and the inflow end fixture 5 - 2.

[0058] Preferably, in order to ensure the stability between the first adjustment box 1-1 and the second adjustment box 2-1, a support rod 8 located at the periphery of the valve carrier module 5 is installed between the first adjustment box 1-1 and the second adjustment box 2-1.

[0059] The return pipe 6 is arranged above the valve carrier module 5 , and a return throttle valve 6 - 1 is installed on the return pipe 6 .

[0060] The two ends of the reflux pipe 6 are respectively assembled at the first reflux pipe 6 interface and the second reflux pipe interface 2-2, and sealing rings are also installed between them to prevent leakage of the test liquid.

[0061] The reflux throttle valve 6-1 is used to regulate the flow of the test liquid in the circulation channel to adjust the degree of opening and closing of the test valve.

[0062] Preferably, the outer ring surface of the middle portion of the return pipe 6 is a rectangular columnar structure, so that the outer ring surface can form a plane to facilitate the installation of the return throttle valve 6-1.

[0063] In order to transmit the power of the driving module 4 to the test liquid in the circulation channel, the liquid flow pipe 3 is located below the valve carrier module 5; the liquid flow pipe 3 includes a first flow pipe 3-1 connected to the driving module 4, and a second flow pipe 3-2 telescopically arranged at the free end of the first flow pipe 3-1 and connected to the first compliance adjustment module 1.

[0064] A first flow pipe interface 1-11 is provided on the side of the first regulating box 1-1 facing the second regulating box 2-1. The end of the second flow pipe 3-2 is installed at the first flow pipe interface 1-11, and a sealing ring is provided between the two.

[0065] The two-stage telescopic design of the liquid flow conduit 3 can not only adjust the length of the entire liquid flow conduit 3 as needed, but also facilitate the disassembly and assembly of the entire test mechanism and the replacement of the test valve.

[0066] Preferably, a sealing ring is provided on the outer wall of the second flow duct 3 - 2 to ensure the sealing between the first flow duct 3 - 1 and the second flow duct 3 - 2 .

[0067] In order to provide power to the test liquid, the driving module 4 includes a driving member, a sleeve 4-2 installed at the power output end of the driving member, and a push member 4-3 located in the sleeve 4-2 and connected to the power output rod of the driving member. The inner cavity of the sleeve 4-2 facing away from the push member 4-3 is connected to the liquid flow pipe 3.

[0068] Specifically, the driving modules 4 corresponding to each test mechanism are arranged side by side and installed in a box 9, the power output rod of the driving member is set toward the direction of the first adjustment box 1-1, the "H"-shaped silicone rubber pusher 4-3 is assembled (preferably threaded) on the power output rod, and the acrylic sleeve 4-2 is sleeved on the outer ring of the pusher 4-3. When the driving member is working, its power output rod can drive the pusher 4-3 to perform reciprocating linear motion in the sleeve 4-2 to provide power for the test liquid.

[0069] The driving component is a voice coil motor 4-1 or a cylinder.

[0070] In this embodiment, the driving element is a voice coil motor 4-1.

[0071] Specifically, the voice coil motor 4 - 1 is fixed in the box 9 through two front and rear motor brackets 4 - 4 , and the motor brackets 4 - 4 are fixed on the box base 10 .

[0072] In order to integrate the various test mechanisms into an integrated test device, the liquid flow pipes 3 of each test mechanism are installed on a main board 11 , and the main board 11 is provided with a first through hole 11 - 1 for connecting the corresponding liquid flow pipe 3 with the driving module 4 .

[0073] The end of the first flow conduit 3 - 1 is mounted on the corresponding first through hole 11 - 1 to communicate with the corresponding inner cavity of the sliding sleeve 4 - 2 (the portion facing the liquid flow conduit 3 ) through the first through hole 11 - 1 .

[0074] In order to make the test environment closer to the internal temperature of the human body, a heating plate 12 is provided on the side of the main board 11 facing the driving module 4 .

[0075] Specifically, the heating plate 12 is arranged between the driving module 4 and the main board 11, and a second through hole 12-1 is provided on the heating plate 12 for connecting the driving module 4 with the corresponding liquid flow pipe 3, and the second through hole 12-1 is arranged corresponding to the first through hole 11-1, that is, the inner cavity of the sleeve 4-2 of the driving module 4 (the part facing the liquid flow pipe 3) is connected with the corresponding liquid flow pipe 3 through the second through hole 12-1 and the first through hole 11-1 in sequence, and the power of the driving member can be transmitted to the liquid flow pipe 3 and the test liquid in the circulation channel through the pushing member 4-3.

[0076] The two ends of the sliding sleeve 4 - 2 are respectively sealed with the heating plate 12 and the motor bracket 4 - 4 opposite to the heating plate 12 .

[0077] Preferably, the heating plate 12 is made of aviation aluminum material with a heating belt wrapped around it, which has good thermal conductivity.

[0078] The heating tape generates heat and transfers the heat to the internal liquid, thereby making the test liquid temperature in the test environment closer to the internal temperature of the human body, eliminating the test influence caused by the difference in ambient temperature.

[0079] A connecting sleeve 4-5 is provided on the side of the driving module 4 facing the main board 11, and the interior of the connecting sleeve 4-5 is connected to the corresponding liquid flow pipe 3. An exhaust hole 4-6 is provided on the top of the connecting sleeve 4-5, and a lower exhaust connector 4-7 is installed on the exhaust hole 4-6. An exhaust cavity 11-2 is provided on the top of the main board 11, and an upper exhaust connector 11-3 is installed on the side of the exhaust cavity 11-2. The lower exhaust connector 4-7 is connected to the upper exhaust connector 11-3 through an air pipe (not shown in the figure), and a third exhaust switch 11-4 is provided on the top of the exhaust cavity 11-2.

[0080] The connection sleeve 4-5 is provided to facilitate the installation of the sliding sleeve 4-2. The connection sleeve 4-5 is provided in one-to-one correspondence with the sliding sleeve 4-2 and the voice coil motor 4-1. The two ends of the sliding sleeve 4-2 are respectively sealed with the connection sleeve 4-5 and the motor bracket 4-4 opposite to the connection sleeve 4-5.

[0081] During the test, bubbles are easily generated in the connecting sleeve 4-5. In order to discharge the bubbles, an exhaust hole 4-6, an exhaust cavity 11-2 and a third exhaust switch 11-4 are provided. The gas in the connecting sleeve 4-5 enters the exhaust cavity 11-2 through the exhaust hole 4-6 and the air pipe, and is then discharged from the test mechanism through the third exhaust switch 11-4.

[0082] Among them, the exhaust cavity 11-2 and the connecting sleeve 4-5 are arranged in a one-to-one correspondence, which not only facilitates the connection of the air pipe, but also improves the efficiency of gas exhaust.

[0083] During testing, the voice coil motor 4-1 performs a reciprocating motion at the human pulse frequency of 1.2 Hz or the test frequency of 3.3 Hz. Its power output rod pushes the pusher 4-3 to reciprocate along the inner wall of the sleeve 4-2, simulating the pulsating cycle of the human heart. When the voice coil motor 4-1 pushes the liquid, the test liquid enters the valve carrier module 5 and the return pipe 6 through the first regulating housing 1-1. Because the test valve is closed, the test liquid can only enter the first regulating housing 1-1 through the return pipe 6, where it stores energy in the damping adjustment assembly and the liquid reservoir 2-10. During the return stroke, the energy within the damping adjustment assembly and the liquid reservoir 2-10 is released. Due to the presence of the one-way valve 1-6, the test liquid can only flow back from the valve carrier module 5, where the test valve is located, into the first regulating housing 1-1 and the liquid flow pipe 3. During this process, the test valve opens. In this way, the voice coil motor 4-1 performs reciprocating motion to realize the circulation of the test liquid, and the test valve performs clinical performance of opening and closing at a specified frequency.

[0084] The test device described in the present invention is capable of creating physiological conditions that are highly close to those required by the human mitral valve / tricuspid valve, stably and reliably providing the dynamic opening and closing of the artificial heart valve mitral valve / tricuspid valve at a real-time frequency (human pulse frequency), and detecting various movement parameters such as movement frequency, waveform, pressure, temperature, etc. throughout the process to accurately record the clinical performance of the test valve in an environment close to the human body, providing a real and reliable basis for evaluating the service life of the mitral valve / tricuspid valve.

[0085] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A real-time wear test device for cardiovascular implants, mitral valve / tricuspid valve, characterized in that: It comprises a plurality of test mechanisms arranged side by side, wherein the test mechanisms include A first compliance adjustment module (1); A second compliance adjustment module (2), a valve carrier module (5) and a return tube (6) being connected to the first compliance adjustment module (1); a liquid flow conduit (3), one end of which is in communication with the first compliance adjustment module (1); a driving module (4), connected to the other end of the liquid flow pipe (3) and used to provide power for the test liquid in the test mechanism; The test liquid flows through the liquid flow pipe (3), the first compliance adjustment module (1), the return pipe (6), the second compliance adjustment module (2) and the valve carrier module (5) in sequence, and flows back into the first compliance adjustment module (1) and the liquid flow pipe (3) to perform a cyclic reciprocating motion.

2. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The first compliance adjustment module (1) comprises a first adjustment box (1-1) which is in internal communication with the valve carrier module (5), the return pipe (6) and the liquid flow pipe (3) respectively; A one-way valve (1-6) is installed in the inner cavity of the first regulating box (1-1) for connecting the valve carrier module (5) and the return pipe (6); A first rectifying valve plate (1-12) is provided on the lower side of the one-way valve (1-6); A first exhaust switch (1-7) is provided on the top of the first regulating box (1-1); The bottom of the first regulating box (1-1) is provided with a drain outlet (1-8); A first observation window (1-9) corresponding to the valve carrier module (5) is provided on a side of the first adjustment box (1-1) facing away from the valve carrier module (5); A second observation window (1-10) corresponding to the return pipe (6) is provided on a side of the first regulating box (1-1) facing away from the return pipe (6).

3. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The second compliance adjustment module (2) comprises a second adjustment box (2-1) which is in communication with the valve carrier module (5) and the return pipe (6) respectively; A damping adjustment component is provided at the bottom of the second adjustment box (2-1); The damping adjustment component comprises an energy cavity (2-4) arranged at the bottom of the second adjustment box (2-1), a diaphragm (2-5) arranged between the second adjustment box (2-1) and the energy cavity (2-4), and a spring (2-6) arranged below the diaphragm (2-5); The top of the second regulating box (2-1) is provided with a liquid storage cavity (2-10) communicated with the interior thereof, and the liquid storage cavity (2-10) is provided with a second exhaust switch (2-11).

4. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 3, characterized in that: A throttle valve (2-12) and a second rectifying valve plate (2-13) are installed in an inner cavity of the second regulating box (2-1) for connecting the valve carrier module (5) and the return pipe (6).

5. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The valve carrier module (5) comprises an outflow end clamp (5-1) connected to the first compliance adjustment module (1), an inflow end clamp (5-2) connected to the second compliance adjustment module (2), and a valve carrier (5-3) installed between the outflow end clamp (5-1) and the inflow end clamp (5-2), and a cardiovascular implant is placed in the valve carrier (5-3); Pressure sensors (5-5) are respectively installed on the outflow end fixture (5-1) and the inflow end fixture (5-2).

6. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The return pipe (6) is arranged above the valve carrier module (5), and a return throttle valve (6-1) is installed on the return pipe (6).

7. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The liquid flow conduit (3) is located below the valve carrier module (5); The liquid flow conduit (3) comprises a first flow conduit (3-1) in communication with the drive module (4), and a second flow conduit (3-2) telescopically arranged at the free end of the first flow conduit (3-1) and connected to the first compliance adjustment module (1).

8. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The driving module (4) comprises a driving member, a sliding sleeve (4-2) mounted on the power output end of the driving member, and a pushing member (4-3) located in the sliding sleeve (4-2) and connected to the power output rod of the driving member, wherein the inner cavity of the sliding sleeve (4-2) facing away from the pushing member (4-3) is in communication with the liquid flow pipe (3); The driving component is a voice coil motor (4-1) or a cylinder.

9. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 1, characterized in that: The liquid flow pipe (3) of each test mechanism is mounted on a main board (11), and the main board (11) is provided with a first through hole (11-1) for connecting the corresponding liquid flow pipe (3) with the driving module (4); A heating plate (12) is provided on the side of the main board (11) facing the drive module (4).

10. The real-time wear test device for cardiovascular implant mitral valve / tricuspid valve according to claim 9, characterized in that: A connecting sleeve (4-5) is provided on a side of the driving module (4) facing the mainboard (11), the interior of which is connected to a corresponding liquid flow pipe (3); an exhaust hole (4-6) is provided on the top of the connecting sleeve (4-5); a lower exhaust connector (4-7) is installed on the exhaust hole (4-6); an exhaust cavity (11-2) is provided on the top of the mainboard (11); an upper exhaust connector (11-3) is installed on the side of the exhaust cavity (11-2); the lower exhaust connector (4-7) is connected to the upper exhaust connector (11-3) via an air pipe; and a third exhaust switch (11-4) is provided on the top of the exhaust cavity (11-2).

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