Upper support barb structure of artificial heart valve stent

Abstract

The utility model provides an artificial heart valve support upper support barb structure in the technical field of medical instruments, which comprises a first frame and a second frame, one end of the second frame is connected onto the first frame, the second frame is obliquely arranged on the inner side of the first frame, the other end of the second frame is connected with a boss, and barbs are arranged on the boss. According to the utility model, one end of the conical barb is connected with the boss, so that the stent is not easy to loosen after being integrally embedded into a corresponding position in a heart through the boss, resistance for preventing the stent from rotating reversely in the circumferential direction can be provided, and acting force for preventing the stent from flying off in the axial direction can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a supporting barb structure on an artificial heart valve stent. Background Art

[0002] Since transcatheter surgery has many advantages such as less trauma and quick recovery, more and more interventional surgeries are being performed transcatheter. Mitral valve replacement surgery has also changed from early surgical methods to transcatheter mitral valve replacement. The artificial heart valve for transcatheter mitral valve replacement requires a stent that is easy to fix and firmly fixed.

[0003] However, since the connection between the stent and the chords is a rotational riveting method, the chords tend to rotate in the opposite direction after being twisted, which leads to the hidden danger of an unstable connection between the stent and the chords, thereby affecting the normal functioning of the artificial heart valve after replacement. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a supporting barb structure on an artificial heart valve stent.

[0005] According to the utility model, a supporting barb structure on an artificial heart valve stent is provided, comprising a frame one and a frame two, wherein the frame two is obliquely arranged on the inner side of the frame one, one end of the frame two is connected to the frame one, and the other end of the frame two is connected to a boss, and the boss is provided with barbs.

[0006] In some embodiments, one end of the frame is configured as an open end, and the other end of the frame is configured as a closed end;

[0007] One end of the frame 2 is set as an open end 2, and the other end of the frame 2 is set as a closed end 2;

[0008] The opening direction of the open end 1 is opposite to the opening direction of the open end 2, and the closing direction of the closed end 1 is opposite to the closing direction of the closed end 2.

[0009] In some embodiments, the frame one includes frame side one and frame side two, the frame two includes frame side three and frame side four, one end of the frame side three is connected to the inner side of the frame side one, one end of the frame side four is connected to the inner side of the frame side two, and one end of the frame side three and the frame side four are both connected to two-thirds of the inner sides of the frame side one and the frame side two.

[0010] In some embodiments, the frame 1 adopts a large V-shaped frame 1, the frame edge 1 adopts a serpentine frame edge 1, and the frame edge 2 adopts a serpentine frame edge 2;

[0011] The frame 2 adopts a small V-shaped frame 2, the frame edge 3 adopts a serpentine frame edge 3, the frame edge 4 adopts a serpentine frame edge 4, and the barbs adopt conical barbs.

[0012] In some embodiments, one end of the boss is connected to the closed end 2, and the other end of the boss is connected to the barb.

[0013] In some embodiments, the diameter of the upper cone of the boss is smaller than the diameter of the bottom surface of the barb.

[0014] In some implementations, the frame 2 is tilted 15-22 degrees relative to the reference plane of the frame 1.

[0015] In some implementations, the volume of the frame 1 is greater than the volume of the frame 2.

[0016] In some embodiments, the frame one is made of nickel-titanium alloy, the frame two is made of nickel-titanium alloy, the boss is made of nickel-titanium alloy, and the barb is made of nickel-titanium alloy.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model connects a boss at one end of the conical barb, and the boss prevents the utility model from being easily loosened after being integrally embedded in the corresponding position of the heart. It can not only provide resistance to prevent the stent from circumferential reverse rotation, but also provide a force to prevent the stent from axially flying off, thereby preventing the tendons from reversely rotating after being twisted, so that the stent and the tendons are firmly connected, and the normal function of the artificial heart valve is not affected;

[0019] 2. The utility model sets frame 2 at a certain angle relative to the reference plane of frame 1, and the barbs are connected to frame 2 through bosses. Therefore, the position of the barbs is relatively lower than the edge of the outer frame of the artificial heart valve stent. When the stent is embedded, the barbs are rotated clockwise to hook the chordae tendineae. If the barbs are rotated counterclockwise to hook the chordae tendineae, the heart tissue will not be damaged due to the relatively low position of the barbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1 It is an axonometric diagram of the supporting barb structure on the artificial heart valve stent of the utility model;

[0022] Figure 2 It is a front view schematic diagram of the supporting barb structure on the artificial heart valve stent of the utility model;

[0023] Figure 3 It is a side view schematic diagram of the supporting barb structure on the artificial heart valve stent of the utility model;

[0024] Figure 4 It is a top view schematic diagram of the supporting barb structure on the artificial heart valve stent of the utility model;

[0025] Figure 5 It is a partially enlarged schematic diagram of the supporting barb structure on the artificial heart valve stent of the utility model.

[0026] Reference numerals:

[0027] Frame 1 Closed End 22

[0028] Open end 11 frame side 3 23

[0029] Closed end 12 frame side 4 24

[0030] Frame edge 13 boss 3

[0031] Frame side 2 14 round table 31

[0032] Frame 2 2 Barb 4

[0033] Open end 21 DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1

[0036] like Figure 1-5 As shown, the supporting barb structure on the artificial heart valve stent of the utility model includes a frame 1 and a frame 2 2. The frame 2 2 is obliquely arranged on the inner side of the frame 1. One end of the frame 2 2 is connected to the frame 1, and the other end of the frame 2 2 is connected to the boss 3, and the boss 3 is provided with a barb 4.

[0037] One end of frame 1 is set as open end 11, and the other end of frame 1 is set as closed end 12. One end of frame 22 is set as open end 21, and the other end of frame 22 is set as closed end 22. Frame 1 includes frame edge 13 and frame edge 214, and frame 22 includes frame edge 3 23 and frame edge 4 24. One end of frame edge 3 23 is connected to frame edge 13, one end of frame edge 4 24 is connected to frame edge 2 14, and one end of frame edge 3 23 and frame edge 4 24 are both connected to two-thirds of frame edge 13 and frame edge 2 14. One end of boss 3 is connected to closed end 22, and the other end of boss 3 is connected to barb 4. The diameter of the truncated cone 31 on boss 3 is smaller than the bottom diameter of barb 4. Frame 22 is set to be inclined 15-22 degrees relative to the reference plane of frame 1. The frame 1 adopts a large V-shaped frame 1, the frame edge 1 13 adopts a serpentine frame edge 1, and the frame edge 2 14 adopts a serpentine frame edge 2. The frame 2 2 adopts a small V-shaped frame 2, the frame edge 3 23 adopts a serpentine frame edge 3, the frame edge 4 24 adopts a serpentine frame edge 4, and the barbs 4 adopt conical barbs. The frame 1 1 adopts a nickel-titanium alloy frame 1, the frame 2 2 adopts a nickel-titanium alloy frame 2, the boss 3 adopts a nickel-titanium alloy boss, and the barbs 4 adopt a nickel-titanium alloy barb.

[0038] Specifically, in this embodiment, one end of frame side one and one end of frame side two are connected together by welding to form closed end one, one end of frame side three and one end of frame side four are connected together by welding to form closed end two, and one end of frame side three is welded to the inner side of frame side one, and one end of frame side four is welded to the inner side of frame side two.

[0039] Specifically, in this embodiment, the volume of frame one is greater than the volume of frame two.

[0040] Specifically, in this embodiment, the opening direction of the open end 1 is opposite to the opening direction of the open end 2, and the closing direction of the closed end 1 is opposite to the closing direction of the closed end 2.

[0041] Working principle:

[0042] The utility model sets frame 2 on the inner side of frame 1, and conical barbs are connected to frame 2, and frame 2 is tilted at a certain angle relative to frame 1. Compared with the common semi-embedded anti-skid support strip structure commonly seen on the market, the aforementioned support barb structure is adopted, and the connection is more stable. By connecting a boss at one end of the conical barb, the utility model is not easy to loosen after being embedded in the corresponding position in the heart as a whole through the boss, which can not only provide resistance to prevent the circumferential reverse rotation of the stent, but also provide a force to prevent the stent from flying off axially. By setting frame 2 at a certain angle relative to the reference plane of frame 1, the barbs are connected to frame 2 through the boss, so the position of the barbs is relatively lower than the outer frame edge of the artificial heart valve stent. When the stent is embedded, the barbs are rotated clockwise to hook the tendon chordae. If the barbs are rotated counterclockwise to hook the tendon chordae, the heart tissue will not be damaged due to the relatively low position.

[0043] 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.

[0044] 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. A supporting barb structure on an artificial heart valve stent, characterized in that: The invention comprises a frame 1 (1) and a frame 2 (2), wherein the frame 2 (2) is arranged obliquely on the inner side of the frame 1 (1), one end of the frame 2 (2) is connected to the frame 1 (1), and the other end of the frame 2 (2) is connected to a boss (3), and a barb (4) is arranged on the boss (3).

2. The supporting barb structure on the artificial heart valve stent according to claim 1, characterized in that: One end of the frame (1) is configured as an open end (11), and the other end of the frame (1) is configured as a closed end (12); One end of the frame 2 (2) is configured as an open end 2 (21), and the other end of the frame 2 (2) is configured as a closed end 2 (22); The opening direction of the first open end (11) is opposite to the opening direction of the second open end (21), and the closing direction of the first closed end (12) is opposite to the closing direction of the second closed end (22).

3. The supporting barb structure on the artificial heart valve stent according to claim 2, characterized in that: The frame one (1) includes a frame edge one (13) and a frame edge two (14), and the frame two (2) includes a frame edge three (23) and a frame edge four (24); One end of the frame side three (23) is connected to the inner side of the frame side one (13), one end of the frame side four (24) is connected to the inner side of the frame side two (14), and one end of the frame side three (23) and the frame side four (24) are both connected to two-thirds of the inner sides of the frame side one (13) and the frame side two (14).

4. The supporting barb structure on the artificial heart valve stent according to claim 3, characterized in that: One end of the boss (3) is connected to the second closed end (22), and the other end of the boss (3) is connected to the barb (4).

5. The supporting barb structure on the artificial heart valve stent according to claim 4, characterized in that: The frame one (1) comprises a large V-shaped frame one, the frame edge one (13) comprises a serpentine frame edge one, and the frame edge two (14) comprises a serpentine frame edge two; The frame two (2) comprises a small V-shaped frame two, the frame edge three (23) comprises a serpentine frame edge three, the frame edge four (24) comprises a serpentine frame edge four, and the barbs (4) comprise conical barbs.

6. The supporting barb structure on the artificial heart valve stent according to claim 5, characterized in that: The diameter of the upper truncated cone (31) of the boss (3) is smaller than the diameter of the bottom surface of the barb (4).

7. The supporting barb structure on the artificial heart valve stent according to claim 1, characterized in that: The frame 2 (2) is arranged to be inclined at 15-22 degrees relative to the reference plane of the frame 1 (1).

8. The supporting barb structure on the artificial heart valve stent according to claim 1, characterized in that: The volume of the frame 1 is greater than the volume of the frame 2.

Images