CN217033464U

CN217033464U - Heating base for valve wear tester and valve wear tester

Info

Publication number: CN217033464U
Application number: CN202220302793.2U
Authority: CN
Inventors: 徐敏省
Original assignee: Shanghai Yingge Intelligent Technology Co ltd
Current assignee: Shanghai Yingge Intelligent Technology Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-07-22
Anticipated expiration: 2032-02-15

Abstract

The utility model provides a heating base for a valve wear tester and the valve wear tester, wherein the heating base comprises a bottom plate and a heating frame which are sequentially arranged, and a heating device is arranged in the heating frame; the bottom plate is of a hollow structure, the upper layer plate of the bottom plate is provided with a plurality of through holes, and the side surface of the bottom plate is provided with a plurality of water outlets; the heating frame is arranged above the upper plate of the bottom plate and comprises an outer peripheral frame and a cross rod, and the cross rod is arranged in the outer peripheral frame; the heating frame is connected with the upper plate to form a first groove and a second groove; and a sealing structure is arranged between the outer peripheral frame of the heating frame and the upper plate. This heating base can carry out more even heating to solution to better simulation human body internal environment temperature makes the test result more accurate. The valve abrasion tester based on the heating base is simple in structure, different heartbeat frequencies are simulated by adjusting the reciprocating motion frequency of the piston through the driving mechanism, and testing within the range of 3-200BPM can be achieved.

Description

Heating base for valve wear tester and valve wear tester

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a heating base for a valve wear tester and the valve wear tester.

Background

Each individual has four valves in the heart, namely an aortic valve joining the left ventricle and the aorta, a pulmonary valve joining the right ventricle and the pulmonary arteries, a mitral valve joining the left atrium and the left ventricle, and a tricuspid valve joining the right atrium and the right ventricle. They all act as one-way valves, allowing blood to flow from one direction only to the other, but not back. The artificial heart valve is an artificial organ which can be implanted in the heart to replace a heart valve, can make blood flow in a single direction and has the function of a natural heart valve. At present, the adoption of the artificial heart valve is an effective means for treating heart valve diseases, so that the service life test of the artificial heart valve is particularly important.

The existing valve testing device needs to simulate the internal environment of a human body to test the abrasion condition of the valve, so that the service life of the valve testing device is prolonged. Temperature control of the test environment is typically achieved by external circulation heating, or by providing heating means within the solution. However, the problem of uneven heating still exists in such a mode, so that the deviation exists between the valve testing temperature and the internal environment temperature of a human body, and the actual service life of the valve cannot be accurately reflected.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies in the prior art, the present invention provides a heating base for a valve wear tester and a valve wear tester.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a heating base for a valve wear tester, which is of a hollow structure, wherein a heating device is arranged in the hollow structure;

the upper plate of the heating base is provided with a plurality of through holes for enabling the solution above the upper plate to flow into the hollow structure of the bottom plate through the through holes;

and a plurality of water outlets are formed in the side surface of the heating base and used for discharging the solution in the hollow structure through the water outlets.

In one embodiment, the heating device is a plurality of heating rods, and the heating rods are arranged in parallel.

In one embodiment, the number of the through holes is 4 or more.

The utility model also provides a valve wear tester, which comprises the heating base, a box body structure, a testing mechanism and a driving mechanism;

the box body structure and the testing mechanism are arranged on the heating base, and the testing structure is arranged in a first cavity defined by the box body structure;

the box body structure comprises a bottom frame, side walls and a box cover; the bottom frame is fixedly connected with the lower end parts of the side walls, and the box cover is movably connected with the upper end parts of the side walls;

the bottom frame is arranged above the heating base and is connected with the heating base through a connecting structure;

the bottom frame comprises an outer peripheral frame and a cross bar, and the cross bar is arranged in the outer peripheral frame; the bottom frame is connected with the upper plate to form a first groove and a second groove, and the first groove and the second groove are separated by a cross rod; the through holes are arranged in the first groove and the second groove.

In a specific embodiment, a sealing structure is further disposed between the bottom frame and the heating base, and the sealing structure is located on an inner side of the connecting structure.

In a specific embodiment, the testing mechanism comprises a second cavity, the second cavity is provided with a one-way liquid inlet valve which can be communicated with the inside of the second cavity and a plurality of valve installation positions for installing the heart valve to be tested, and the driving mechanism is connected with the second cavity;

when the one-way liquid inlet valve is opened and the heart valve to be tested arranged on the valve installation position is closed, the one-way liquid inlet valve is used for enabling liquid in the first cavity to flow into the second cavity through the one-way liquid inlet valve;

when the one-way liquid inlet valve is closed and a to-be-tested heart valve arranged on the valve installation position is opened, the one-way liquid inlet valve is used for enabling liquid in the second cavity to flow into the first cavity through the to-be-tested heart valve.

In a specific embodiment, the second cavity comprises a first supporting disk and a second supporting disk which are arranged in parallel, and the first supporting disk and the second supporting disk are vertically arranged on the base; the first supporting disc and the second supporting disc are connected through a first annular structure; the valve installation positions are vertically arranged on the first support disc and used for installing the heart valve to be tested; the valve installation position and the first annular structure are respectively positioned on two sides of the first support disc;

a second annular structure is arranged on the outer side of the second supporting disk, and the interior of the second annular structure is communicated with the interior of the first annular structure; and a piston is arranged in the second annular structure, is connected with the inner side wall of the second annular structure and is driven by a driving mechanism to reciprocate along the inner side wall of the second annular structure.

In a specific embodiment, the main body of the valve installation position is a hollow cylinder structure, a sealing cover is arranged on the valve installation position, or a heart valve to be tested can be installed in the hollow cylinder structure;

a pressure sensor is further arranged above the first annular structure and used for measuring the pressure in the second cavity; the diameter of the first annular structure is larger than that of the second annular structure and the hollow cylindrical structure of the valve installation position;

the first supporting disc and the second supporting disc are fixed on the base and fixedly connected through a plurality of bolt structures sequentially arranged along the peripheral direction, and the bolt structures are arranged on the outer side of the first annular structure;

the driving mechanism is arranged on the outer side of the box body structure, is connected with the piston through a driving shaft and is consistent with the arrangement direction of the piston.

In a specific embodiment, the side wall of the box structure comprises a first side wall vertically connected with the outer side wall of the second annular structure, and a second side wall arranged opposite to the first side wall; the first side wall and the second side wall are respectively connected with the two ends of the first side wall and the second side wall; the second side wall is made of transparent materials;

the valve wear tester also comprises a camera, wherein the camera is arranged outside the second side wall and is positioned right in front of the first supporting disc and used for photographing the heart valve to be tested.

Compared with the prior art, the utility model has the following beneficial effects:

1. the heating base can heat the solution more uniformly through the arrangement of the heating frame, so that the environmental temperature in a human body can be better simulated, and the test result is more accurate.

2. The valve wear tester provided by the utility model has the advantages that the piston reciprocates along the inner side wall of the second annular structure through the driving mechanism, so that the wear test is carried out on the valve to be tested by simulating the hydraulic pressure caused by heartbeat, and the service life of the valve to be tested is judged. The device can realize the simultaneous detection of a plurality of valves to be detected through a plurality of valve clamping structures; and can adjust according to the size to valve clamping structure, come to realize detecting simultaneously the valve that awaits measuring of different sizes.

3. According to the valve wear tester, the check valve is arranged below the second cavity, so that when the piston reciprocates, the solution in the first cavity and the solution in the second cavity form a backflow passage which enters the second cavity from the second cavity through the valve to be tested and then enters the first cavity from the check valve, and thus a test cycle is formed.

4. The testing device has simple structure, simulates different heartbeat frequencies by adjusting the reciprocating frequency of the piston through the driving mechanism, and can realize the test within the range of 3-200 BPM.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of a heating base structure according to the present invention;

FIG. 2 is a schematic view of the connection between the heating base and the bottom frame of the box structure;

FIG. 3 is a top view of the valve wear tester of the present invention;

FIG. 4 is a cross-sectional view of the valve wear tester of the present invention;

FIG. 5 is a block diagram of the housing of the valve wear tester of the present invention;

wherein: 1-heating the soleplate; 2-heating a rod; 3-a through hole; 4-upper layer plate; 5, a water outlet; 6-outer peripheral frame; 7-a cross bar; 8-sealing ring; 9-a first support disc; 10-a second support disc; 11-a first ring-shaped structure; 12-a second annular structure; 13-valve installation site; 14-a sealing cover; 15-a piston; 16-one-way liquid inlet valve; 17-a pressure sensor; 18-a side wall; 19-case cover; 20-a driving mechanism.

Detailed Description

Unless otherwise defined, technical or scientific terms used in the present specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model will be described in detail below with reference to specific embodiments and with reference to the accompanying drawings. It is noted that in the detailed description of these embodiments, in order to provide a concise description, all features of an actual implementation may not be described in detail.

Example 1

The embodiment provides a valve wear tester, as shown in fig. 1-5, comprising a heating base 1, a box structure, a testing mechanism and a driving mechanism 20; the box body structure and the testing mechanism are arranged on the heating base, and the testing structure is arranged in a first cavity formed by the box body structure;

the structure of the heating base described in this embodiment is shown in fig. 1-2, the heating base 1 is a hollow structure, a heating device is arranged in the hollow structure, and the heating device specifically adopted in this embodiment is two heating rods 2 arranged in parallel. The upper plate 4 of the heating base 1 is provided with a plurality of through holes 3, in this embodiment, 4 through holes 3, but not limited thereto, for flowing the solution above the upper plate 4 into the hollow structure of the heating base plate 1 through the through holes 3. The side of the heating base 1 is provided with a plurality of water outlets 5, in this embodiment, specifically, 4 water outlets 5 are provided, and 2 water outlets are provided on the left side and the right side, respectively, for discharging the solution in the hollow structure through the water outlets 5. On one hand, the heating base 1 can uniformly heat the solution in the box body structure above the heating base, so that the temperature of the solution is kept at 36.7 ℃ to simulate the environment temperature in a human body; on the other hand, the device can also be used as an outflow channel of the solution, so that the solution in the box body can be completely discharged.

The box structure in this embodiment includes a bottom frame, side walls 18, and a box cover 19; the bottom frame is fixedly connected with the lower end parts of the side walls, and the box cover 19 is movably connected with the upper end parts of the side walls 18.

The underframe setting is in heating base 1 top to connect through connection structure, the connection structure who adopts in this embodiment is a plurality of threaded connection spare that set up along circumference. The bottom frame comprises an outer peripheral frame 6 and a cross rod 7, and the cross rod 7 is arranged in the outer peripheral frame 6; the bottom frame is connected with the upper plate 4 to form a first groove and a second groove, and the first groove and the second groove are separated by a cross rod 7; the through-hole 3 is provided in the first and second grooves.

And a sealing structure is also arranged between the bottom frame and the heating base 1 and is positioned on the inner side of the connecting structure. The sealing structure adopted in the embodiment is a sealing ring 8. The sealing between the box body structure and the upper plate 4 of the heating base 1 is realized through the sealing ring 8 and the thread connecting piece arranged on the periphery of the sealing ring 8.

The testing mechanism in this embodiment includes a second cavity, the second cavity is provided with a one-way liquid inlet valve 16 capable of communicating with the inside of the second cavity and a plurality of valve mounting positions 13 capable of mounting the heart valve to be tested, and the driving mechanism 20 is connected with the second cavity;

the second cavity comprises a first supporting disc 9 and a second supporting disc 10 which are arranged in parallel, and the first supporting disc 9 and the second supporting disc 10 are vertically arranged on the heating base 1; the first supporting disk 9 and the second supporting disk 10 are connected by a first annular structure 11, the first annular structure 11 may be a cylindrical structure, or a polygonal cylindrical structure (that is, the cross section of the cylindrical structure is polygonal), and the present invention is not limited in particular; in this embodiment, a cylindrical structure is used as an example. First supporting disk 9 and second supporting disk 10 are still through a plurality of bolt structure fixed connection that set gradually along the peripheral direction, bolt structure sets up in the outside of first annular structure 11.

A plurality of valve installation positions 13 are vertically arranged on the first support disc 2 and used for installing the heart valves to be tested; and the valve mounting site 13 and the first annular structure 11 are respectively located on both sides of the first support disc 9; in this embodiment, taking 6 valve installation positions 13 as an example, each valve installation position 13 is sequentially arranged on the first support disk 9 along the circumferential direction. The main body of each valve installation position 13 is a hollow cylinder structure, a sealing cover 14 is arranged on each valve installation position 13, or the heart valve to be tested can be installed in the hollow cylinder structure. Namely, when 6 heart valves to be tested are tested, 1 heart valve to be tested is respectively installed on 6 valve installation positions 13; when testing 1-5 heart valves to be tested, at least 1 of the 6 valve mounting positions 13 is not provided with the heart valve to be tested, but is provided with the sealing cover 14, so that liquid does not pass through the valve mounting positions 13.

The outside of the second support disc 10 is provided with a second annular structure 12, and the inside of the second annular structure 12 is communicated with the inside of the first annular structure 11. The second annular structure 12 may be a cylindrical structure or a polygonal cylindrical structure, which is not particularly limited in the present invention; in this embodiment, a cylindrical structure is used as an example.

A piston 15 is arranged in the second annular structure 12, the piston 15 is connected with the inner side wall of the second annular structure 12, and the piston 15 is driven by a driving rod of a driving mechanism 20 arranged outside the box body structure to reciprocate along the inner side wall of the second annular structure 12. The driving mechanism 20 is connected with the second cavity, specifically, the driving shaft of the driving mechanism 20 is connected with the piston 15, and the direction of the driving shaft is consistent with the arrangement direction of the piston 15. The driving mechanism 20 used in the present invention is intended to achieve the linear reciprocating motion of the piston, and the specific form is not particularly limited, and may be an electric cylinder, a hydraulic cylinder, or an air cylinder.

A pressure sensor 17 is also arranged above the first ring-shaped structure 11 for measuring the pressure inside the second cavity.

The diameter of the first ring-shaped structure 11 is larger than that of the second ring-shaped structure 12 and the hollow cylinder structure of the valve installation position 13, so that when the piston 15 moves forwards, the flow rate of liquid flowing to each heart valve to be tested is the same, and the testing conditions of each heart valve to be tested are consistent.

The lateral walls 18 of the box structure comprise a first lateral wall vertically connected to the outer lateral wall of the second annular structure 12, and a second lateral wall arranged opposite to the first lateral wall; the first side wall and the second side wall are connected with the first side wall and the second side wall respectively, and the first side wall and the second side wall are arranged oppositely. The second side wall is made of a transparent material to facilitate clear photographing by a camera described below. The first side wall, the third side wall and the fourth side wall may also be made of a transparent material, and the present invention is not particularly limited.

The valve wear tester further comprises a camera which is arranged outside the second side wall and right in front of the first support disc 9 and used for photographing the heart valve to be tested. The service life of the heart valve to be tested is judged by taking a picture in real time and comparing the opening size of the heart valve to be tested in the picture.

When the valve wear testing device is used for testing, specifically, when the driving shaft of the driving mechanism 20 drives the piston 15 to move towards the direction close to the first cavity, the one-way liquid inlet valve 16 is closed, the to-be-tested heart valve is opened, and liquid in the second cavity enters the first cavity through the to-be-tested heart valve; when the driving shaft of the driving mechanism 20 drives the piston 15 to move in the direction away from the first cavity, the one-way liquid inlet valve 16 is opened and the heart valve to be measured is closed, so that the liquid in the first cavity enters the second cavity, thereby completing the liquid circulation.

When the device is operated, the solution is injected into the box body structure through the water inlet, and the liquid level of the solution is higher than the top end of the first annular structure 11 so as to ensure that the second cavity is filled with the solution. During the test, the reciprocating frequency of the piston 15 can be adjusted by the driving mechanism 20 to simulate different heart beat frequencies, and the device can be suitable for the test in the range of 3-200 BPM.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A heating base for a valve wear tester is characterized in that the heating base is of a hollow structure, and a heating device is arranged in the hollow structure;

the side of the heating base is provided with a plurality of water outlets for discharging the solution in the hollow structure through the water outlets.

2. The heating base for a valve wear tester as claimed in claim 1, wherein the heating means is a plurality of heating rods, and each heating rod is arranged in parallel.

3. The heated base for a valve wear tester as claimed in claim 1, wherein the number of through holes is 4 or more.

4. A valve wear tester comprising the heating base of any one of claims 1-3, and a case structure, a testing mechanism, and a drive mechanism;

5. The valve wear tester of claim 4, wherein a sealing structure is further disposed between the bottom frame and the heating base, and the sealing structure is located inside the connecting structure.

6. The valve wear tester of claim 4, wherein the testing mechanism comprises a second cavity, the second cavity is provided with a one-way liquid inlet valve which can be communicated with the inside of the second cavity and a plurality of valve installation positions for installing the heart valve to be tested, and the driving mechanism is connected with the second cavity;

when the one-way liquid inlet valve is closed and the to-be-tested heart valve arranged on the valve installation position is opened, the one-way liquid inlet valve is used for enabling liquid in the second cavity to flow into the first cavity through the to-be-tested heart valve.

7. The valve wear tester of claim 6, wherein the second chamber comprises a first support disk and a second support disk arranged in parallel, and the first support disk and the second support disk are vertically arranged on the base; the first supporting disk and the second supporting disk are connected through a first annular structure; the valve installation positions are vertically arranged on the first support disc and used for installing the heart valve to be tested; and the valve installation position and the first annular structure are respectively positioned at two sides of the first supporting disk.

8. The valve wear tester of claim 7, wherein the outside of the second support disk is provided with a second annular structure, the interior of the second annular structure communicating with the interior of the first annular structure; and a piston is arranged in the second annular structure, is connected with the inner side wall of the second annular structure and is driven by a driving mechanism to reciprocate along the inner side wall of the second annular structure.

9. The valve wear tester according to claim 7 or 8, wherein the valve mounting site has a main body of a hollow cylindrical structure, and a sealing cover is provided on the valve mounting site, or a heart valve to be tested can be mounted inside the hollow cylindrical structure;

the driving mechanism is arranged on the outer side of the box body structure, is connected with the piston through the driving shaft and is consistent with the arrangement direction of the piston.

10. The valve wear tester of claim 6, wherein the side walls of the box structure include a first side wall vertically connected to the second annular structure outer side wall, and a second side wall disposed opposite the first side wall; the first side wall and the second side wall are respectively connected with the two ends of the first side wall and the second side wall; the second side wall is made of transparent materials;