阅读说明：本技术 一种心脏瓣膜开闭检测仪 (Heart valve opening and closing detector ) 是由 史鼎盛 曹鹏 于 2019-08-30 设计创作，主要内容包括：本发明涉及医疗器械技术领域,尤其涉及一种心脏瓣膜开闭检测仪,包括外壳体、测试腔、增压装置和顺应腔、回流管、瓣膜夹具、快拆件、排气孔,所述测试腔前后两端开口设置,所述外壳体上位于测试腔前后两端的开口处设置有观察窗,所述增压装置与测试腔、顺应腔与测试腔、回流管与测试腔、鲁尔接头与测试腔之间均为贯通设置；本发明可以使用注射器作为动力源,也可以使用各种气动的,液动的脉动泵作为动力源,同时由于特殊的动力传递系统可以隔绝动力机构的液体或者气体与腔体内的无菌液体,防止泵内的液体和气体与腔体内的液体进行接触,有效的隔绝了细菌,也减少了液体的浪费。(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.)

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.

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.