CN110538003A - Heart valve opening and closing detector - Google Patents

Abstract

The invention relates to the technical field of medical instruments, in particular to a heart valve opening and closing detector which comprises an outer shell, a test cavity, a supercharging device, a compliance cavity, a return pipe, a valve clamp, a quick-release part and exhaust holes, wherein openings at the front end and the rear end of the test cavity are arranged; the invention can use the injector as the power source, and can also use various pneumatic and hydraulic pulsating pumps as the power source, and simultaneously, because the special power transmission system can isolate the liquid or gas of the power mechanism from the sterile liquid in the cavity, the liquid and gas in the pump are prevented from contacting with the liquid in the cavity, the bacteria are effectively isolated, and the waste of the liquid is also reduced.

Description

Heart valve opening and closing detector

Technical Field

The invention relates to the technical field of medical instruments, in particular to a heart valve opening and closing detector.

Background

With the development of socio-economic and the aging of population, the incidence rate of valvular heart disease is obviously increased, and research shows that the incidence rate of valvular heart disease of the old people over 75 years old is up to 13.3%. At present, a plurality of companies in China develop heart valve prostheses and have achieved certain success; however, a detection instrument for observing whether the valve leaflets of the heart valve prosthesis open and close uniformly is not involved, so that the detection instrument becomes a blank for research in the field of heart valves.

Although some pulsating machines can be used for detection in the market, the existing pulsating machines are very complex in structure, sterilization can be affected, the price is very high, the operation is difficult, time and labor are wasted, the use on a production line is not facilitated, and the pulse-tube type pulse-tube machine is only suitable for detection in a laboratory. In addition, the valve fatigue machine is used for replacing and observing the opening and closing conditions of the heart valve, but the valve fatigue machine is too fast in opening and closing frequency, is not suitable for the condition of low flow rate and is more unfavorable for observation, certain damage can be caused to valve leaflets to a certain extent, and the structure and the required structure have larger access. Therefore, it is important to develop a valve opening and closing instrument that is easy and convenient to use and test and is accurate.

Disclosure of Invention

the invention aims to provide a heart valve opening and closing detector, which has the following advantages: 1. the adaptability is good: the injector can be used as a power source, and various pneumatic and hydraulic pulse pumps can also be used as power sources; 2. good safety performance: because the special power transmission system can isolate the liquid or gas of the power mechanism from the sterile liquid in the cavity, the liquid and gas in the pump are prevented from contacting with the liquid in the cavity, bacteria are effectively isolated, and the waste of the liquid is reduced; 3. the application range is wide: the device can be suitable for detecting various artificial valves which are supported by radial direction, the inner diameter of the cavity is 80mm, and the device can be suitable for measuring various artificial tricuspid valves containing special structures, such as the artificial tricuspid valve containing a braided ring. The flow field diameter of the traditional fluid mechanics detection equipment is less than 55mm, and the traditional fluid mechanics detection equipment is generally designed for detection of an aortic stent; 4. convenient sterilization and cleaning: the corner uses the replaceable low-price standard component, and can be directly replaced. A large number of straight holes are designed to be convenient to directly use alcohol for cleaning; 5. flow field stabilization: the larger, longer lumen, combined with the compliant lumen design, reduces the effects of adverse turbulence during liquid turbulence.

In order to solve the technical problem, the invention is solved by the following technical scheme: a heart valve opening and closing detector comprises an outer shell, a testing cavity arranged in the outer shell, a pressurizing device and a compliance cavity which are connected to the upper end of the outer shell in a matching mode, a return pipe connected to the lower end of the outer shell in a matching mode, a valve clamp arranged in the outer shell and connected with the testing cavity in a matching mode, and a plurality of exhaust holes formed in the outer shell, wherein openings in the front end and the rear end of the testing cavity are formed; the test liquid is injected into the test cavity from the upper end of the compliance cavity, air in the test cavity is exhausted through the exhaust hole, and then the test liquid flows through the return pipe to form a complete loop; when the pressurizing device pressurizes the test cavity, the valve leaf is in a closed state, the test liquid flows to the lower return pipe from the left end of the test cavity and finally returns to the compliance cavity, and the test liquid in the compliance cavity can be observed to rise; when the pressurizing device depressurizes the test cavity, the valve leaf is in an open state, and the test liquid flows to the left end of the test cavity from the right end of the test cavity.

the pressure boosting device comprises a pressure boosting interface, a water outlet pipe, a silicone tube, an upper spherical shell, a lower spherical shell and a silicone membrane, wherein the pressure boosting interface is connected with the test cavity in a matched mode, the upper spherical shell is fixedly connected with the lower spherical shell, the silicone tube is arranged at the upper end of the upper spherical shell, the lower end of the lower spherical shell is connected with the upper end of the pressure boosting interface in a matched mode, and the silicone membrane is fixed between the upper spherical shell and the lower spherical shell.

Wherein, be provided with flexible line on the pellosil.

the backflow pipe comprises a first joint, a second joint, a first pipeline, a second pipeline, a quick joint and a nozzle, the first joint is detachably connected with the first pipeline in a matched mode, the second joint is detachably connected with the second pipeline in a matched mode, the first pipeline is connected with the second pipeline in a matched mode through the quick joint, and the nozzle is arranged in the quick joint.

The nozzle is provided with a flow stabilizing hole, a flow stabilizing guide angle is arranged on the flow stabilizing hole, and the flow stabilizing guide angle is arranged in a circular arc shape.

wherein, luer joint is connected on the exhaust hole in a matching way.

wherein, the observation window is made of acrylic or PC material with high permeability.

wherein, the test chamber divide into preceding test chamber and back test chamber, the shell body divide into leading casing and rearmounted casing, preceding test chamber sets up in leading casing, back test chamber sets up in rearmounted casing, valve anchor clamps are set up in the front test chamber and the rear test chamber junction, leading casing and rearmounted casing are through quick detach spare fixed connection.

the valve clamp is characterized in that a mounting groove with an upper end opening is formed in the outer shell, an inner insert is arranged in the mounting groove, the valve clamp is arranged inside the inner insert, a pressing plate and a cover plate arranged above the pressing plate are arranged at the top end of the inner insert, and the cover plate is detachably connected with the outer shell through a quick-detaching piece.

The valve clamp is characterized in that an inner thread and a clamp fixing piece in matched threaded connection with the inner insert through the inner thread are arranged inside the inner insert, and the valve clamp is fixed with the inner insert through the clamp fixing piece.

Compared with the prior art, the invention has the advantages that:

1. The adaptability and the safety performance are good: the injector can be used as a power source, various pneumatic and hydraulic pulse pumps can also be used as the power source, and meanwhile, as the special power transmission system can isolate liquid or gas of the power mechanism from sterile liquid in the cavity, the liquid and the gas in the pump are prevented from contacting with the liquid in the cavity, bacteria are effectively isolated, and the waste of test liquid is reduced;

2. simple structure, the installation is simple and easy and convenient sterilization and washing: the valve leaflet structure has the advantages that the number of parts is small, the number of moving parts is small, the rapid detachable design of the rapid detaching part is realized, the main body adopts an integrated design, high-permeability acrylic or PC is used as a material of an observation window, and the opening and closing states of the valve leaflet are more beneficial to observation due to the characteristic of different refractive indexes of gas and liquid;

3. the flow field is stable and the test is accurate, the design of the larger and longer inner cavity and the compliance cavity reduces the influence of adverse turbulence in the liquid disturbance process, and the peak pressure can reach about 90 mm Hg when the aorta is tested by the detection of the previous test prototype, so that the requirement of the test is relatively close and the damage to valve leaflets is small; 4. portable and application scope is wide: small, can be single need not the instrument and remove, can be applicable to simultaneously that various lean on the artificial valve of radial support to detect, cavity internal diameter 80mm, applicable in all kinds of artificial tricuspid valve that contain special construction valves, for example contain the measurement of weaving the ring. The flow field diameter of the traditional fluid mechanics detection equipment is less than 55mm, and the traditional fluid mechanics detection equipment is generally designed for detection of an aortic stent;

5. The processing cost, the use cost and the personnel requirement are low: a large number of standard parts are used, and basically straight holes are used, so that the structure is simple; the manufacturing cost can be as low as about 1/10 of a common pulsating flow machine, the cavity is small in size, less test solution is required to fill, the clamping is quick, the time cost is low, and the clamping can be completed by 4-5 steps with convenient use; training for 30 minutes;

6. convenient sterilization and cleaning and low environmental requirements: replaceable low-price standard parts are used at corners and can be directly replaced; a large number of straight holes are designed to be convenient to clean by directly using alcohol, and a needle cylinder can be used as a power source, so that the work of removing electricity can be realized;

7. The space can be expanded: preparing connecting ports of two sensors for acquiring a pressure curve; various test structure requirements can be expanded by using different clamp designs.

Drawings

fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic front structural view of the present invention.

fig. 3a-3b are schematic views showing the separation of the front case and the rear case according to the present invention.

FIGS. 4a-4c are schematic structural views of the return tube of the present invention; wherein FIG. 4c is a schematic structural view of the nozzle of the present invention.

fig. 5 is a schematic structural diagram of the supercharging device of the present invention.

Fig. 6 is a schematic structural view of a silicone membrane of the present invention.

Fig. 7 is a schematic view of the valve prosthesis of the present invention fixed in a valve holder.

FIGS. 8a-8b are schematic cross-sectional views of the present invention; FIG. 8a shows the flow direction of the test solution when the pressurizing device of the present invention pressurizes the test chamber and the valve leaflets are in the closed state; fig. 8b shows the flow direction of the test solution when the valve leaflet is in the open state when the pressurizing device of the present invention is depressurizing the test chamber.

FIGS. 9a-9c are schematic structural views of another embodiment of the present invention; FIG. 9a is a schematic perspective view of another embodiment of the present invention; FIG. 9b is a schematic front view of another embodiment of the present invention; fig. 9c is a schematic structural view of the inner insert of the present invention taken out from the outer shell.

Fig. 10 is a schematic view of the structure of the insert of the present invention.

the names of the parts indicated by the numbers in the drawings are as follows: 1-outer shell, 12-front shell, 13-rear shell, 2-test cavity, 21-front test cavity, 22-rear test cavity, 3-supercharging device, 31-supercharging interface, 32-water outlet pipe, 33-silicone tube, 34-upper spherical shell, 35-lower spherical shell, 36-silicone membrane, 361-telescopic line, 4-compliance cavity, 5-backflow pipe, 51-first joint, 52-second joint, 53-first pipeline, 54-second pipeline, 55-quick joint, 56-nozzle, 561-steady flow hole, 562-steady flow guide angle, 6-valve clamp, 7-quick-dismantling piece, 8-exhaust hole, 81-luer joint, 9-observation window, 10-installation groove, 101-inner insert piece, 1011-internal thread, 1012-clamp fixing piece, 102-pressing plate, 103-cover plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The first embodiment is as follows:

As shown in fig. 1 and 2, a heart valve opening and closing detector comprises an outer shell 1, a testing cavity 2 arranged in the outer shell 1, a pressurizing device 3 and a compliance cavity 4 which are connected at the upper end of the outer shell 1 in a matching manner, a return pipe 5 which is connected at the lower end of the outer shell 1 in a matching manner, a valve clamp 6 which is arranged in the outer shell 1 and is connected with the testing cavity 2 in a matching manner, and a plurality of exhaust holes 8 which are arranged on the outer shell 1, wherein openings at the front end and the rear end of the testing cavity 2 are arranged, observation windows 9 are arranged at openings at the front end and the rear end of the testing cavity 2 on the outer shell 1, and the pressurizing device 3 and the testing cavity 2, the compliance cavity 4 and the testing cavity 2, the return pipe 5 and; the test liquid is injected into the test cavity 2 from the upper end of the compliance cavity 4, the air in the test cavity 2 is exhausted through the exhaust hole 8, and then the test liquid flows through the return pipe 5 to form a complete loop; when the pressurizing device 3 pressurizes the testing chamber 2, the valve leaf is in a closed state, the testing liquid flows from the left end of the testing chamber 2 to the return pipe 5 below and finally returns to the compliance chamber 4, and the testing liquid in the compliance chamber 4 can be observed to rise (as shown in fig. 8 a); when the pressurizing device 3 depressurizes the inside of the testing cavity 2, the valve leaf is in an open state, and the testing liquid flows from the left end of the testing cavity 2 to the right end of the testing cavity 2 (as shown in fig. 8 b); the valve prosthesis is fixed on the valve clamp 6, the pressure in the testing cavity 2 is controlled by the pressurizing device 3, so that the testing liquid in the testing cavity 2 is in a flowing state to simulate the flowing of blood in the heart, and the opening and closing states of valve leaflets of the valve prosthesis are observed through the observation window 9; the valve clamp 6 can be a silica gel sheet with a hole in the middle, and the valve prosthesis is fixed on the silica gel sheet through the hole.

in this embodiment, the pressurization device 3 includes a pressurization interface 31, a water outlet pipe 32, a silicone tube 33, an upper spherical shell 34, a lower spherical shell 35, and a silicone membrane 36, the pressurization interface 31 is connected with the test chamber 2 in a matching manner, the upper spherical shell 34 is fixedly connected with the lower spherical shell 35, the silicone tube 33 is disposed at the upper end of the upper spherical shell 34, the lower end of the lower spherical shell 35 is connected with the upper end of the pressurization interface 31 in a matching manner, and the silicone membrane 36 is fixed between the upper spherical shell 34 and the lower spherical shell 35 (as shown in fig. 5); one end of the silicone tube 33 is connected with an external power source which can be a needle cylinder or an electric pump, the adaptability is high, and when the needle cylinder is used as the power source, the power can be cut off; the power source applies pressure to the spherical shell through the silicone tube 33, so that the silicone membrane 36 expands or retracts to control the pressure intensity in the test cavity 2, thereby controlling the flow rate of the test liquid in the test cavity 2 and simulating the flow of blood in the heart of a human body.

In this embodiment, the silicone membrane 36 is provided with a stretch mark 361 (as shown in fig. 6); the arrangement of the telescopic lines is beneficial to the expansion or retraction of the silicon membrane 36; when the power source pressurizes the inside of the test cavity 2 through the silicone tube 33, the silicone membrane 36 expands downward; conversely, when the power source depressurizes the inside of the test chamber 2 through the silicone tube 33, the silicone membrane 36 bulges upward.

in this embodiment, the return pipe 5 includes a first joint 51, a second joint 52, a first pipe 53, a second pipe 54, a quick joint 55, and a nozzle 56, where the first joint 51 is detachably connected to the first pipe 53 in a matching manner, the second joint 52 is detachably connected to the second pipe 54 in a matching manner, the first pipe 53 is detachably connected to the second pipe 54 in a matching manner through the quick joint 55, and the nozzle 56 is disposed in the quick joint 55 (as shown in fig. 4a-4 b); the first pipeline 53 and the second pipeline 54 are detachably connected, so that the cleaning and sterilization of the instrument after use are more convenient; the first pipeline 53 and the second pipeline 54 can adopt the low-price silicone tube 33, and after the use, new pipelines can be directly replaced, so that the use cost is low, and the operation is convenient and fast; the nozzle 56 can assist in controlling the flow rate of the test liquid in the test chamber 2 by the size of the central hole; the nozzle may be a one-way valve arranged so that test fluid can only flow from the left end of the test chamber 2 to the right end of the test chamber 2 when the leaflets are in the open position, but not through the return conduit 5.

In this embodiment, the nozzle 56 is provided with a steady flow hole 561, the steady flow hole 561 is provided with a steady flow guide angle 562, and the steady flow guide angle 562 is arranged in a circular arc shape (as shown in fig. 4 c); the detector can adjust the pressure difference in the test cavity 2 by the size of the flow stabilizing hole 561 on the nozzle 56, and meanwhile, the smooth flow stabilizing conduction angle 562 of the flow stabilizing hole 561 can avoid the condition that the test liquid generates turbulence before passing through the nozzle 56; of course, a pressure pump may be connected to the silicone tube 33 to control the pressure difference in the test chamber 2, but such an arrangement would result in a substantial increase in the cost of the apparatus, which is not favorable for practical production and application, and also would increase the complexity of the apparatus structure.

in this embodiment, the vent hole 8 is connected with a luer 81 in a matching manner; the luer 81 on the side wall surface of the testing cavity 2 can be connected with a pressure sensor so as to test a pressure curve; other sensors, such as temperature sensors, etc., may also be connected.

In this embodiment, the observation window 9 is made of acrylic or PC material with high permeability; the use of high permeability acrylic or PC as the material of the viewing window 9 combined with the different refractive indices of the gas and liquid makes the leaflet open and closed configuration more accessible for viewing.

In this embodiment, the test chamber 2 is divided into a front test chamber 21 and a rear test chamber 22, the outer housing 1 is divided into a front housing 11 and a rear housing 12, the front test chamber 21 is disposed in the front housing 11, the rear test chamber 22 is disposed in the rear housing 12, the valve clamp 6 is disposed at a connection point of the front test chamber 21 and the rear test chamber 22, and the front housing 11 and the rear housing 12 are fixedly connected through a quick-release member 7 (as shown in fig. 3a-3 b); the front shell 11 and the rear shell 12 can be separated and fixed through the quick-release part 7, so that the front shell and the rear shell can be conveniently and quickly detached.

The second embodiment is as follows:

As shown in fig. 9a-9 c; a mounting groove 10 with an opening at the upper end is formed in the outer shell 1, an inner insert 101 is arranged in the mounting groove 10, the valve clamp 6 is arranged in the inner insert 101, a pressing plate 102 and a cover plate 103 arranged above the pressing plate 102 are arranged at the top end of the inner insert 101, and the cover plate 103 is matched and detachably connected with the outer shell 1 through a quick-release part 7; different from the first embodiment, the outer shell 1 is provided as an integral structure, the valve clamp 6 is fixed inside the inner insert 101, and the inner insert 101 and the valve clamp 6 inside the inner insert 101 are taken out by opening the cover plate 103 and the pressure plate 102; the purpose of the design is that after one valve prosthesis is detected, the cover plate 103 and the pressing plate 102 are only required to be opened, the inner insert 101 is taken out, the next valve prosthesis to be detected is replaced, and the valve prosthesis does not need to be replaced after the test liquid in the test cavity 2 is discharged, so that the loss of the test liquid is greatly reduced, and the use cost is reduced.

In this embodiment, the inner part of the inner insert 101 is provided with an internal thread 1011 and a clamp fixing member 1012 screwed with the inner insert 101 through the internal thread 1011, and the valve clamp 6 is fixed to the inner insert 101 through the clamp fixing member 1012 (as shown in fig. 10); the valve clamp 6 is placed in the inner insert 101, and then the clamp fixing piece 1012 is fixed through the internal thread 1011, so that the stability of the valve clamp 6 in the inner insert 101 can be improved, and the phenomena of unstable fixation and movement of the valve prosthesis during detection are avoided.

The operation process of the invention is as follows:

the first embodiment is as follows:

1. Unlocking the quick-release part 7 by controlling the handle 712 to enable the sleeve hook 715 to leave the clamping groove 722, separating the front shell 11 from the rear shell 12, and taking out the valve clamp 6;

2. Inserting the valve prosthesis into the valve holder 6 (as shown in fig. 7);

3. The valve clamp 6 is put into the original position, the sleeve hook 715 is sleeved in the clamping groove 722, and the handle 712 is operated to fix the front shell 11 and the rear shell 12 together;

4. Injecting test liquid into the port of the compliance cavity 4, discharging air in the test cavity 2 through the luer connector 8, and enabling the test liquid to flow through the return pipe 5 to form a complete loop;

5. One end of the silicone tube 33 is connected with a power source (the power source can be a needle cylinder or a motor pump), so that the test can be started, and the opening and closing conditions of the valve leaflets can be observed through the observation window 9;

6. Disconnecting the first pipe 53 from the second pipe 54 and draining the water, after ensuring that the liquid is drained, opening the quick-release element 7 and removing the valve; the second embodiment is as follows:

1. Unlocking the quick-release part 7, removing the cover plate 103 and the pressure plate 102, and taking the inner insert 101 out of the mounting groove 10;

2. Unscrewing the clamp fixing member 1012 in the inner insert 101, and then pulling out the valve clamp 6;

3. Inserting the valve prosthesis into the valve clamp 6 (as shown in fig. 7), then inserting the valve clamp 6 into the inner insert 101, and screwing the clamp fixing member 1012 to complete the fixation;

4. placing the inner insert 101 into the mounting groove 10, placing the pressure plate 102 and the cover plate 103 at the top end of the mounting groove 10, and then fixing through the quick-release part 7;

5. Test liquid is injected into the opening of the compliance cavity 4, air in the test cavity 2 is discharged through the luer connector 8, the test liquid flows through the return pipe 5 to form a complete loop, and meanwhile, one end of the silicone tube 33 is connected with a power source (the power source can be a needle cylinder or a motor pump), so that the test can be started, and the opening and closing conditions of the valve leaflets can be observed through the observation window 9;

6. if a valve prosthesis to be detected still exists, water drainage is not needed, and only the cover pressing plate 103 and the pressing plate 102 need to be opened, the inner insert 101 is removed, and the valve prosthesis to be detected is replaced;

7. Disconnecting the first pipe 53 from the second pipe 54 and draining the water, after ensuring that the liquid is drained, opening the quick-release element 7 and removing the valve;

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (10)

1. A heart valve opening and closing detector is characterized in that: the device comprises an outer shell, a testing cavity arranged in the outer shell, a pressurizing device and a compliance cavity which are connected to the upper end of the outer shell in a matching way, a return pipe connected to the lower end of the outer shell in a matching way, a valve clamp arranged in the outer shell and connected with the testing cavity in a matching way, and a plurality of exhaust holes arranged on the outer shell, wherein openings at the front end and the rear end of the testing cavity are arranged, observation windows are arranged at openings at the front end and the rear end of the testing cavity on the outer shell, and the pressurizing device and the testing cavity, the compliance cavity and the testing cavity, the return pipe and the testing; when the pressurizing device pressurizes the test cavity, the valve leaf is in a closed state, the test liquid flows to the lower return pipe from the left end of the test cavity and finally returns to the compliance cavity, and the test liquid in the compliance cavity can be observed to rise; when the pressurizing device decompresses the testing cavity, the valve leaf is in an open state, and the testing liquid flows to the left end of the testing cavity from the right end of the testing cavity.

2. The heart valve opening and closing detector of claim 1, wherein: the pressurizing device comprises a pressurizing interface, a water outlet pipe, a silicone tube, an upper spherical shell, a lower spherical shell and a silicone membrane, wherein the pressurizing interface is connected with the test cavity in a matched mode, the upper spherical shell is fixedly connected with the lower spherical shell, the silicone tube is arranged at the upper end of the upper spherical shell, the lower end of the lower spherical shell is connected with the upper end of the pressurizing interface in a matched mode, and the silicone membrane is fixed between the upper spherical shell and the lower spherical shell.

3. The heart valve opening and closing detector of claim 2, wherein: the silica gel membrane is provided with telescopic grains.

4. The heart valve opening and closing detector of claim 1, wherein: the back flow includes first joint, second joint, first pipeline, second pipeline, connects and the nozzle soon, first joint can be dismantled with the cooperation of first pipeline and be connected, the second joint can be dismantled with the cooperation of second pipeline and be connected, first pipeline passes through the cooperation of quick-operation joint with the second pipeline and is connected, the nozzle sets up in the quick-operation joint.

5. the apparatus according to claim 4, wherein: the nozzle is provided with a flow stabilizing hole, a flow stabilizing guide angle is arranged on the flow stabilizing hole, and the flow stabilizing guide angle is arranged in a circular arc shape.

6. The heart valve opening and closing detector of claim 1, wherein: luer connectors are connected to the exhaust holes in a matched mode.

7. The heart valve opening and closing detector of claim 1, wherein: the observation window is made of high-permeability acrylic or PC materials.

8. The heart valve opening and closing detector of claim 1, wherein: the test chamber divide into preceding test chamber and back test chamber, the shell body divide into leading casing and rearmounted casing, preceding test chamber sets up in leading casing, the back test chamber sets up in rearmounted casing, valve anchor clamps are set up in the front test chamber and the back test chamber junction, leading casing and rearmounted casing are through quick detach piece fixed connection.

9. The heart valve opening and closing detector of claim 1, wherein: the valve clamp is characterized in that a mounting groove with an upper end opening is formed in the outer shell, an inner insert is arranged in the mounting groove, the valve clamp is arranged inside the inner insert, a pressing plate and a cover plate arranged above the pressing plate are arranged at the top end of the inner insert, and the cover plate is detachably connected with the outer shell through a quick-detaching piece in a matched mode.

10. The heart valve opening and closing detector of claim 8, wherein: the valve clamp is characterized in that an internal thread and a clamp fixing piece in matched threaded connection with the inner insert through the internal thread are arranged inside the inner insert, and the valve clamp is fixedly connected with the inner insert through the clamp fixing piece.