Integrated atrioventricular valve

Abstract

The utility model provides an integrated atrioventricular valve in the technical field of medical instruments, which comprises an inner valve frame and an outer valve frame, an inner skirt edge is arranged on the inner valve frame, an outer skirt edge is arranged on the outer valve frame, a buffer strip is arranged between the inner skirt edge and the outer skirt edge, and a plurality of fold cavities are arranged on the buffer strip. According to the utility model, the inner skirt edge and the outer skirt edge are connected together to form the buffer strip with the wrinkled cavity by enabling the suture line to jointly penetrate through the first suture involution hole in the inner skirt edge and the second suture involution hole and the third suture involution hole in the outer skirt edge, and the perivalvular leakage phenomenon can be reduced or eliminated by the buffer strip. By arranging the buffer strip with the wrinkle cavity, the inner valve frame and the outer valve frame are tightly attached, blood turbulence caused by the height difference between the inner valve frame and the outer valve frame is eliminated, and the blood fluid dynamics is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to an integrated atrioventricular valve. Background Art

[0002] Congestive heart failure (CHF) is a complex disease that can lead to debilitation and even death. In the early stages of the disease, the heart suffers muscle damage and shifts the load to the remaining healthy muscle. To compensate for this defect, the heart actively reshapes itself geometrically, which increases the load and pressure, causing further damage and forming a vicious cycle.

[0003] Mitral regurgitation associated with CHF is called functional mitral regurgitation (FMR). When the mitral valve ring dilates, the valve leaflets can no longer coapt, and blood leaks or flows back into the atrium during contraction. The heart has to pump blood more frequently than usual to offset the amount of blood leakage or return in order to maintain normal cardiac output, but this will undoubtedly increase the workload of the heart. The heart is under excessive pressure, resulting in muscle damage and aggravating congestive heart failure.

[0004] Mitral regurgitation is the most common mitral valve disease. There are usually two treatment options for patients with mitral regurgitation: repair and replacement. Generally, repair is the first and best option. However, in fact, many dysfunctional valves cannot achieve the expected treatment effect through repair. In this case, mitral valve replacement surgery is required.

[0005] However, at present, double-layer artificial heart valves containing inner and outer frames generally have a high probability of aortic obstruction after implantation due to the overall high height of the valve frame. At the same time, artificial heart valves containing inner and outer double-layer stents also have a large height difference and large gap between the inner and outer frames, which leads to blood turbulence and paravalvular leakage between the height difference of the inner and outer frames of the artificial heart valve. Utility Model Content

[0006] In view of the defects in the prior art, the purpose of the utility model is to provide an integrated atrioventricular valve.

[0007] According to the utility model, an integrated atrioventricular valve is provided, comprising an inner valve frame and an outer valve frame, wherein an inner skirt is arranged on the inner valve frame, an outer skirt is arranged on the outer valve frame, a buffer zone is arranged between the inner skirt and the outer skirt, and a plurality of pleated cavities are arranged on the buffer zone.

[0008] In some embodiments, the inner skirt is circumferentially attached to the inner surface of the inner valve frame, and the outer skirt is circumferentially attached to the outer surface of the outer valve frame.

[0009] In some embodiments, a plurality of suture holes are equidistantly arranged on one side of the inner skirt;

[0010] An inner hole is arranged at the center of the outer skirt surface, a plurality of suture matching holes three are arranged equidistantly around the edge of the inner hole, and a plurality of suture matching holes two are arranged equidistantly around the outer side of the inner hole, and the plurality of suture matching holes two are arranged on the outer skirt surface;

[0011] The buffer zone is formed after the plurality of suture matching holes 1, the plurality of suture matching holes 3 and the plurality of suture matching holes 2 are connected together by perforating through suture lines.

[0012] In some embodiments, a plurality of the pleated cavities are disposed on the surface of the buffer zone in a circumferential manner, and the plurality of the pleated cavities are disposed between a plurality of the third suture matching holes and a plurality of the second suture matching holes.

[0013] In some embodiments, a plurality of lever arm suture reserved openings are arranged around the outer side of the outer skirt, the plurality of lever arm suture reserved openings are used to connect connecting arms on other brackets, and the plurality of suture matching holes 2 are arranged between the plurality of suture matching holes 3 and the plurality of lever arm suture reserved openings.

[0014] In some embodiments, an opening is formed at the connection between the plurality of sewing holes 1 on the inner skirt and the plurality of sewing holes 3 on the outer skirt.

[0015] In some embodiments, the diameter of the second suture hole is larger than the diameter of the third suture hole, and the diameter of the third suture hole is larger than the diameter of the first suture hole.

[0016] In some implementations, the inner skirt is a parallelogram inner skirt, and the outer skirt is a circular sector outer skirt.

[0017] In some implementations, the inner skirt is made of PET material, and the outer skirt is made of PET material.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model forms a buffer zone with a pleated cavity by connecting the sutured matching hole 1 on the inner skirt edge and the sutured matching hole 2 and the sutured matching hole 3 on the outer skirt edge through the suture thread. The buffer zone can reduce or eliminate the paravalvular leakage phenomenon;

[0020] 2. The utility model provides a buffer zone containing a pleated cavity, so that the inner valve frame and the outer valve frame fit closely together, eliminates the blood turbulence caused by the height difference between the inner valve frame and the outer valve frame, and optimizes the blood fluid dynamics;

[0021] 3. The utility model sets an outer skirt and an inner skirt, and passes sutures through the suture holes on the outer skirt and the inner skirt to connect the outer skirt and the inner skirt into an integrated skirt to enhance the connection strength, and can reduce the overall height of the inner and outer valve frames on the atrioventricular valve of the utility model, thereby reducing the overall compressed diameter of the atrioventricular valve of the utility model after being gripped by the gripper, thereby reducing the risk of aortic obstruction after implantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 It is a schematic diagram of the axonometric structure of the integrated atrioventricular valve of the utility model;

[0024] Figure 2 It is a schematic diagram of the top view of the integrated atrioventricular valve of the utility model;

[0025] Figure 3 This is a schematic diagram of the inner skirt structure of the integrated atrioventricular valve of the utility model;

[0026] Figure 4 This is a schematic diagram of the outer skirt structure of the integrated atrioventricular valve of the utility model;

[0027] Figure 5 This is a schematic diagram of the specific application of the integrated atrioventricular valve of the utility model during implantation.

[0028] Reference numerals:

[0029] Inner petal frame 1 buffer belt 3

[0030] Inner skirt 11 pleated cavity 31

[0031] Suture joint hole 111 opening 4

[0032] Outer valve frame 2 leaflets 5

[0033] Outer skirt 21 catheter sheath 6

[0034] Inner hole 211 tendon catcher 7

[0035] Suture joint hole three 2111 inflow end 8

[0036] Suture joint hole 212 outflow end 9

[0037] Sutured opening 213 for the arm DETAILED DESCRIPTION

[0038] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0039] Example 1

[0040] like Figure 1-5 As shown, the integrated atrioventricular valve of the utility model comprises an inner valve frame 1 and an outer valve frame 2, an inner skirt 11 is arranged on the inner valve frame 1, an outer skirt 21 is arranged on the outer valve frame 2, a buffer belt 3 is arranged between the inner skirt 11 and the outer skirt 21, and a plurality of pleated cavities 31 are arranged on the buffer belt 3.

[0041] The inner skirt 11 is circumferentially attached to the inner surface of the inner petal frame 1, and the outer skirt 21 is circumferentially attached to the outer surface of the outer petal frame 2. A plurality of suture matching holes 1 111 are equidistantly arranged on one side of the inner skirt 11. An inner hole 211 is arranged at the center of the surface of the outer skirt 21, a plurality of suture matching holes 3 2111 are equidistantly arranged around the edge of the inner hole 211, and a plurality of suture matching holes 2 212 are equidistantly arranged around the outer side of the inner hole 211, and a plurality of suture matching holes 2 212 are arranged on the surface of the outer skirt 21. The plurality of suture matching holes 1 111, the plurality of suture matching holes 3 2111, and the plurality of suture matching holes 2 212 are connected by sutures through holes to form a buffer zone 3. A plurality of pleated cavities 31 are circumferentially arranged on the surface of the buffer zone 3, and the plurality of pleated cavities 31 are arranged between the plurality of suture matching holes 3 2111 and the plurality of suture matching holes 2 212. A plurality of arm suture reserved openings 213 are arranged around the outer side of the outer skirt 21, and a plurality of suture matching holes 212 are arranged between the plurality of suture matching holes 3 2111 and the plurality of arm suture reserved openings 213. An opening 4 is formed at the perforated connection between the plurality of suture matching holes 1 111 on the inner skirt 11 and the plurality of suture matching holes 3 2111 on the outer skirt 21. The diameter of the suture matching hole 212 is greater than the diameter of the suture matching hole 3 2111, and the diameter of the suture matching hole 3 2111 is greater than the diameter of the suture matching hole 1 111. The inner skirt 11 adopts a parallelogram inner skirt, and the outer skirt 21 adopts a circular fan-shaped outer skirt. The inner skirt 11 adopts a PET inner skirt, and the outer skirt 21 adopts a PET outer skirt.

[0042] Specifically, in the present embodiment, the outer skirt 21 is formed by splicing eighteen small pieces of flexible material, or may be formed by splicing six small pieces of flexible material or nine small pieces of flexible material.

[0043] Specifically, in the present embodiment, the inner skirt 11 and the outer skirt 21 are both made of flexible materials. In addition to PET materials, other suitable materials such as silicone, polybutadiene, polyurethane, polyester, nylon, and expanded polytetrafluoroethylene can also be used.

[0044] Specifically, in this embodiment, the spacing between the second suture matching hole 212 and the third suture matching hole 2111 is L1, and 5mm<L1≤10mm, and the height of the outer skirt 21 is L2, L1<L2,

[0045] Specifically, in this embodiment, when the inner valve frame 1 and the outer valve frame 2 are compressed or pass through the catheter sheath 6 on the conveyor, the buffer belt 3 containing the pleated cavity 31 can buffer the tensile deformation caused by friction between the outer skirt 21 and the catheter sheath 6.

[0046] Working principle:

[0047] In the utility model, the diameter of the second suture matching hole 212 is set to be larger than the diameter of the first suture matching hole 111 and the diameter of the third suture matching hole 2111, so that an opening 4 is formed at the edge of the inflow end 8 where the inner skirt 11 and the outer skirt 21 are connected. When the leaflet 5 is opened, the flow of antegrade blood can be slowed down through the opening 4, allowing blood to enter the pleat cavity 31, further promoting blood coagulation and tissue growth, thereby preventing leakage around the valve.

[0048] In the utility model, the buffer belt 3 containing the pleated cavity 31 is provided to make the inner valve frame 1 and the outer valve frame 2 fit closely, eliminate the blood turbulence caused by the height difference between the inner valve frame 1 and the outer valve frame 2, and optimize the blood fluid dynamics.

[0049] In the present invention, an outer skirt 21 and an inner skirt 11 are provided, and sutures are passed through the suture holes on the outer skirt 21 and the inner skirt 11 to connect the outer skirt 21 and the inner skirt 11 into an integrated skirt to enhance the connection strength. The overall height of the inner and outer valve frames on the atrioventricular valve of the present invention can be reduced, thereby reducing the overall compressed diameter of the atrioventricular valve of the present invention after being gripped by the gripper, thereby reducing the risk of aortic obstruction after implantation.

[0050] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. An integrated atrioventricular valve, characterized in that: The invention comprises an inner petal frame (1) and an outer petal frame (2), wherein an inner skirt (11) is arranged on the inner petal frame (1), an outer skirt (21) is arranged on the outer petal frame (2), a buffer zone (3) is arranged between the inner skirt (11) and the outer skirt (21), and a plurality of pleated cavities (31) are arranged on the buffer zone (3).

2. The integrated atrioventricular valve according to claim 1, characterized in that: The inner skirt (11) is circumferentially fitted on the inner surface of the inner valve frame (1), and the outer skirt (21) is circumferentially fitted on the outer surface of the outer valve frame (2).

3. The integrated atrioventricular valve according to claim 1, characterized in that: A plurality of suturing holes (111) are equidistantly arranged on one side of the inner skirt (11); An inner hole (211) is arranged at the center of the surface of the outer skirt (21), a plurality of suturing holes (2111) are arranged equidistantly around the edge of the inner hole (211), and a plurality of suturing holes (212) are arranged equidistantly around the outer side of the inner hole (211), and the plurality of suturing holes (212) are arranged on the surface of the outer skirt (21); The buffer zone (3) is formed after the plurality of suture matching holes one (111), the plurality of suture matching holes three (2111), and the plurality of suture matching holes two (212) are connected together by perforating through suture lines.

4. The integrated atrioventricular valve according to claim 3, characterized in that: The plurality of pleated cavities (31) are arranged circumferentially on the surface of the buffer belt (3), and the plurality of pleated cavities (31) are arranged between the plurality of suture matching holes three (2111) and the plurality of suture matching holes two (212).

5. The integrated atrioventricular valve according to claim 3, characterized in that: A plurality of lever arm suture reserved openings (213) are arranged around the outer side of the outer skirt (21), and the plurality of suture matching holes 2 (212) are arranged between the plurality of suture matching holes 3 (2111) and the plurality of lever arm suture reserved openings (213).

6. The integrated atrioventricular valve according to claim 3, characterized in that: An opening (4) is formed at the connection point between the plurality of sewing matching holes one (111) on the inner skirt (11) and the plurality of sewing matching holes three (2111) on the outer skirt (21).

7. The integrated atrioventricular valve according to claim 3, characterized in that: The diameter of the second suture matching hole (212) is greater than the diameter of the third suture matching hole (2111), and the diameter of the third suture matching hole (2111) is greater than the diameter of the first suture matching hole (111).

8. The integrated atrioventricular valve according to claim 1, characterized in that: The inner skirt (11) comprises a parallelogram inner skirt, and the outer skirt (21) comprises a circular sector-shaped outer skirt.

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