Valve repair device and clamping assembly

Abstract

The application relates to a valve repair device and a clamping assembly, the clamping assembly comprising a moving piece and a fixed piece, the moving piece having a long axis extending along a length direction and a short axis extending along a width direction, the long axis intersecting the short axis, the moving piece being further provided with a matching surface for matching with a valve leaflet, the matching surface being used for abutting against the valve leaflet when clamping the valve leaflet. Further, a plane passing through the long axis and the short axis of the moving piece is defined as a first reference plane, and the matching surface is arranged to form an angle with the first reference plane passing through the long axis and the short axis. Further, the fixed piece is connected with the moving piece, and the fixed piece is used for cooperating with the moving piece to clamp the valve leaflet. The valve repair device and the clamping assembly can be further compressed in volume during transportation, the size of the clamping assembly is reduced, the size of the valve repair device and related components of a conveying system is effectively reduced, the valve repair device is convenient to transport, and the operation safety is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a valve repair device and clamping assembly. Background Technology

[0002] Heart valves are the gateways to the heart's blood circulation. If they become narrowed or insufficient, the heart will experience insufficient pumping or failure, leading to symptoms such as chest tightness, shortness of breath, generalized edema, weakness, and chest pain. This poses a significant threat to the life and quality of life of the elderly. With population aging and advancements in medical technology, valvular heart disease (VHD) has become the third leading cause of cardiovascular disease, seriously endangering human health.

[0003] The mitral valve connects the left ventricle to the left atrium, and the tricuspid valve connects the right ventricle to the right atrium, ensuring blood flow from the atria to the ventricles. Insufficient closure of these valves leads to blood regurgitation. For example, mitral valve regurgitation (MR) occurs when the mitral valve fails to close properly during cardiac systole, allowing blood to flow backward from the left ventricle into the left atrium. Mitral regurgitation is the most common valvular heart disease and a significant cause of congestive heart failure (CHF).

[0004] Valve repair using a valve repair device is one of the common methods for treating cusp regurgitation in existing technologies. The valve repair device uses a clamping structure to remove the valve leaflets and, together with other components, fixes the leaflets together to reduce blood regurgitation. However, traditional valve repair devices, due to their structure, are difficult to compress within the delivery system during transport, resulting in a large overall size and inconvenience for delivery. Summary of the Invention

[0005] Therefore, it is necessary to provide a valve repair device and a clamping assembly. The clamping assembly can be further compressed during delivery, reducing the size of the clamping assembly, thereby effectively reducing the size of the valve repair device and related components of the delivery system, facilitating delivery and improving surgical safety.

[0006] On one hand, this application provides a clamping component, the clamping component including:

[0007] A movable member having a long axis extending along the length direction and a short axis extending along the width direction, the long axis intersecting the short axis, and the movable member further having a mating surface for engaging with a leaflet, the mating surface forming an angle with a first reference plane passing through the long axis and the short axis;

[0008] A fixing member is connected to the moving member, and the fixing member is used to cooperate with the moving member to clamp the leaflet.

[0009] The technical solution of this application will be further described below:

[0010] In one embodiment, one end of the fixing member is connected to the moving member, the other end of the fixing member is a free end, the fixing member has an initial position on one side of the moving member and a clamping position on the other side of the moving member, and the fixing member has a tendency to return from the clamping position to the initial position.

[0011] In one embodiment, the movable member is provided with a clearance for the fixed member to move between the initial position and the clamping position.

[0012] In one embodiment, the projection of the moving member onto the first reference plane is a ring structure.

[0013] In one embodiment, the width of the movable member gradually decreases from the middle of the movable member toward both ends of the movable member.

[0014] In one embodiment, the movable member is provided with a first barb that extends along the clamping position near the fixed member.

[0015] In one embodiment, a plurality of first barbs are provided, and the plurality of first barbs are arranged at intervals on the moving part.

[0016] In one embodiment, the movable member has a proximal end and a distal end disposed opposite to each other, the fixing member is connected to the proximal end, and the length of the first barb gradually increases along the proximal-to-distal direction.

[0017] In one embodiment, the movable member has a proximal end and a distal end disposed opposite to each other, the fixed member is connected to the proximal end, and the width of the mating surface gradually increases along the direction from the proximal end to the distal end.

[0018] In one embodiment, the movable member has a proximal end and a distal end disposed opposite to each other, the fixed member is connected to the proximal end, and the distal end is provided with a first connection hole.

[0019] In one embodiment, the fastener is provided with a second barb, the extension direction of the second barb being opposite to the extension direction of the first barb.

[0020] In one embodiment, the projection of the moving member onto a second reference plane that passes through the long axis of the moving member and is perpendicular to the first reference plane has a curved structure.

[0021] On the other hand, this application also provides a valve repair device, comprising:

[0022] The aforementioned clamping components;

[0023] A driving component is connected to the fixing member of the clamping component, and the driving component is used to drive the fixing member to move between an initial position and a clamping position.

[0024] The aforementioned clamping assembly and valve repair device, by configuring the mating surface of the moving part to form an angle with the first reference plane passing through the major and minor axes, avoid the moving part and the fixed part being in the same plane during compression. Thus, during the process of compressing the clamping assembly into the delivery system, the moving part will not interfere with the fixed part prematurely in the minor axis direction, allowing the size of the moving part in the minor axis direction to be further compressed to the width of the fixed part, thereby reducing the overall volume of the clamping assembly and delivery system and improving surgical safety. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the clamping assembly in its natural state according to an embodiment;

[0028] Figure 2 for Figure 1 A schematic diagram of the clamping assembly in the clamping state;

[0029] Figure 3 for Figure 2 A schematic projection of the clamping assembly shown in the diagram on the first reference plane;

[0030] Figure 4 for Figure 2 A schematic projection of the clamping assembly shown on the second reference plane;

[0031] Figure 5This is a schematic diagram of the structure of a valve repair device according to one embodiment.

[0032] Explanation of reference numerals in the attached figures:

[0033] 11. Moving part; 111. Mating surface; 112. Long shaft; 113. Short shaft; 114. First barb; 115. Proximal end; 116. Distal end; 117. First connecting hole; 12. Fixing part; 121. Second barb; 122. First stitching hole; 13. Clearance opening; 20. Connecting part; 21. Through groove; 22. Second stitching hole; 23. Adapter part; 31. Fixing frame; 32. Drive shaft; 33. Transmission part. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] One embodiment of this application provides a clamping assembly for clamping the native leaflets of the heart. See also... Figure 1 as well as Figure 2 , Figure 1 as well as Figure 2 A schematic diagram of the clamping device according to an embodiment of the present invention is shown. Specifically, the clamping assembly of one embodiment includes a movable member 11 and a fixed member 12. The movable member 11 has a long axis 112 extending in the length direction and a short axis 113 extending in the width direction. The movable member 11 has a proximal end 115 and a distal end 116 disposed opposite to each other. The length direction refers to the direction from the proximal end 115 to the distal end 116 of the movable member 11, and the width direction refers to the direction perpendicular to the proximal end 115 to the distal end 116 of the movable member 11. Further, the long axis 112 and the short axis 113 intersect, and the movable member 11 is also provided with a mating surface 111 for engaging with the leaflet. When clamping the leaflet, the mating surface 111 is used to abut against the leaflet. Further, a plane passing through the long axis 112 and the short axis 113 of the movable member 11 is defined as a first reference plane, and the mating surface 111 is configured to form an angle with the first reference plane passing through the long axis 112 and the short axis 113. Furthermore, the fixing member 12 is connected to the moving member 11, and the fixing member 12 is used to cooperate with the moving member 11 to clamp the leaflet.

[0036] Specifically, the moving part of the conventional clamping assembly is a flat plate structure, that is, the mating surface 111 of the moving part is coplanar with the first reference plane passing through its own long axis 112 and short axis 113. In addition, the fixed part of the conventional clamping assembly is also located in the first reference plane during the transportation process. As a result, when the clamping assembly is compressed in order to put the clamping assembly into the transportation system, the moving part will interfere with the fixed part in the direction of the short axis 113. This will prevent the clamping assembly from being compressed further, resulting in the clamping assembly still having a large volume after compression. This is not conducive to transportation by the transportation system and requires a larger diameter delivery tube, thereby increasing the surgical risk.

[0037] The clamping assembly of this application configures the mating surface 111 of the moving member 11 to form an angle with the first reference plane passing through the major axis 112 and the minor axis 113. This avoids the moving member 11 and the fixing member 12 being in the same plane during compression. As a result, during the compression and placement of the clamping assembly into the delivery system, the moving member 11 will not interfere with the fixing member 12 prematurely in the direction of the minor axis 113. This allows the size of the moving member 11 in the direction of the minor axis 113 to be further compressed to the width of the fixing member 12, thereby reducing the overall volume of the clamping assembly and the delivery system and improving surgical safety.

[0038] Preferably, one end of the fixing member 12 is connected to the moving member 11, and the other end of the fixing member 12 is a free end, so that the fixing member 12 can move relative to the moving member 11 through elastic deformation. Specifically, the fixing member 12 has an initial position on one side of the moving member 11 and a clamping position on the other side of the moving member 11, and the fixing member 12 has a tendency to return from the clamping position to the initial position. Specifically, before the clamping assembly is released to the original valve of the heart and clamps the valve, the fixing member 12 is in the initial position on one side of the moving member 11. At this time, the fixing member 12 can be driven to move relative to the moving member 11 by the driving assembly, so that the fixing member 12 moves to the clamping position on the other side of the moving member 11, and then the leaflet is placed in the gap between the fixing member 12 and the moving member 11. Since the fixing member 12 has a tendency to return from the clamping position to the initial position, after the driving assembly is removed, the fixing member 12 can cooperate with the moving member 11 to clamp the leaflet under the elastic restoring force. Preferably, the clamping component is made of elastic material, nickel-titanium alloy, shape memory polymer, etc., and the fixing part 12 and the moving part 11 are integrally formed, so that the fixing part 12 and the moving part 11 have a tendency to return from the clamping position to the initial position after forming.

[0039] Furthermore, the movable member 11 is provided with a clearance opening 13 to allow the fixed member 12 to move between the initial position and the clamping position. Preferably, the length and width of the fixed member 12 are both smaller than the length and width corresponding to the clearance opening 13, so that the clearance opening 13 can prevent the fixed member 12 from interfering with the movable member 11 when it moves between the initial position and the clamping position, and facilitate the transition of the clamping assembly between the natural state and the clamping state.

[0040] See Figure 3 The projection of the moving part 11 on the first reference plane is a ring structure. The moving part of the conventional clamping assembly is mostly a long plate structure with a small clamping area, resulting in poor clamping effect. The clamping assembly of this application sets the moving part 11 as a ring structure. The ring structure clamping assembly can have a larger clamping area with the same consumables, thus improving the clamping stability of the leaflets.

[0041] Preferably, the width of the movable member 11 gradually decreases from the middle of the movable member 11 to both ends. The width of the movable member 11 refers to its dimension in the direction perpendicular to the proximal end 115 to the distal end 116. That is, the middle width of the movable member 11 is larger, and the width at both ends of the movable member 11 is smaller. The projection of the movable member 11 on the first reference plane has an elliptical ring structure. By making the middle width of the movable member 11 larger and the width at both ends of the movable member 11 smaller, the clamping area of ​​the clamping assembly can be further increased, and it is also beneficial to further compress the movable member 11 in the direction of the minor axis 113 (width direction) when compressing the clamping assembly. Preferably, the ratio of the maximum major axis to the maximum minor axis of the movable member 11 is in the range of 1:20 to 20:1; more preferably 1:5 to 5:1.

[0042] Furthermore, the movable member 11 is provided with a first barb 114, which extends along the clamping position direction close to the fixed member 12. By providing the first barb 114 on the movable member 11, the resistance between the movable member 11 and the leaflet can be increased, thereby improving the stability of the clamping assembly in clamping the leaflet.

[0043] Preferably, multiple first barbs 114 are provided, and the multiple first barbs 114 are arranged at intervals on the moving part. By arranging multiple first barbs 114 at intervals along the moving part, the stability of the clamping assembly in clamping the leaflet is further improved, while ensuring that the moving member 11 applies force to the leaflet evenly. Preferably, the first barbs 114 are evenly spaced along the moving part.

[0044] Furthermore, the fixing member 12 is connected to the proximal end 115 of the moving member 11, and the distal end 116 of the moving member 11 is provided with a first connecting hole 117 for threading a wire, thereby cooperating with the drive assembly to realize the relative movement of the moving member 11 and the fixing member 12, thereby realizing the clamping or releasing of the leaflet.

[0045] Furthermore, the length of the first barb 114 gradually increases along the direction from the proximal end 115 to the distal end 116 of the movable member 11. That is, the length of the first barb 114 located at the distal end 116 of the movable member 11 is greater than the length of the first barb 114 located at the proximal end 115 of the movable member 11. This design ensures that the valve leaflet tissue is not easily torn by the first barb 114 while improving the clamping effect. Preferably, see [reference needed]. Figure 4 The length L of the first barb 114 ranges from 0.3mm to 2mm. Specifically, if the length L of the first barb 114 is too long, it is easy to puncture the leaflet, causing it to tear. If the length L of the first barb 114 is too short, it is easy for the clamping component to have insufficient clamping stability on the leaflet, thus causing the clamping component to fall off the leaflet. Therefore, limiting the length L of the first barb 114 to the range of 0.3mm to 2mm ensures the clamping stability of the clamping component while preventing the leaflet from being punctured or torn. Furthermore, the first barb 114 is inclined. Preferably, the inclination angle α of the first barb 114 ranges from 30° to 90°. A first barb 114 with an inclination angle α ranging from 30° to 90° has better compliance, which can improve the clamping effect of the clamping component and avoid damage to the leaflet. Furthermore, the size of the tip angle b of the first barb 114 ranges from 10° to 90°, so that the first barb 114 can provide greater friction without damaging the leaflet.

[0046] Furthermore, the width of the mating surface 111 gradually increases along the direction from the proximal end 115 to the distal end 116 of the movable member 11. Specifically, the movable member 11 has an overall annular thin rod structure, and the width of the mating surface 111 is the rod width of the annular thin rod. In this embodiment, the rod width of the movable member 11 near the proximal end 115 is smaller, and the rod width of the movable member 11 near the distal end 116 is larger. During use, the movable member 11 and the fixed member 12 are often first moved relative to each other by an external force, causing the fixed member 12 to move from its initial position to the clamping position. After the clamping position is determined, the external force is removed, allowing the movable member 11 and the fixed member 12 to clamp the leaflet under the action of elastic restoring force. By making the rod width of the movable member 11 near the proximal end 115 smaller and the rod width near the distal end 116 larger, it is possible to prevent the movable member 11 from deforming excessively when pulled apart by an external force.

[0047] Further, see Figure 4 The projection of the movable member 11 onto the second reference plane, which passes through the long axis 112 of the movable member 11 and is perpendicular to the first reference plane, has a curved structure. By making the movable member 11 curved, it can better conform to the curvature of the leaflet, thereby improving the clamping stability of the clamping assembly. Furthermore, the curved structure can be a concave surface, a convex surface, or a wavy surface, etc., for example... Figure 4 As shown in the figure, in this embodiment, the projection of the moving member 11 on the second reference plane has an upward concave curved surface structure.

[0048] Furthermore, the fastener 12 is provided with a second barb 121, the extension direction of which is opposite to the extension direction of the first barb 114. That is, the second barb 121 and the first barb 114 extend in a direction that approaches each other, for example... Figure 4 As shown, the first barb 114 extends downward to the right, and the second barb 121 extends upward to the left. Specifically, as described above, in the clamping position, the moving member 11 is located on one side of the leaflet, and the fixing member 12 is located on the other side of the leaflet. By extending the second barb 121 and the first barb 114 in a direction closer to each other, it is ensured that the first barb 114 and the second barb 121 respectively grip the leaflet from both sides, thereby improving the clamping stability of the clamping assembly. Therefore, the clamping assembly of this application, by providing the second barb 121 on the fixing member 12, can increase the resistance between the fixing member 12 and the leaflet, thereby further improving the stability of the clamping assembly in clamping the leaflet.

[0049] It is worth noting that the fixing part of traditional clamping components is mostly a flat structure without barbs, due to limitations in barb manufacturing processes. Specifically, short barbs on the fixing part are difficult to manufacture, while long barbs can easily damage the chordae tendineae. Therefore, the fixing part of traditional clamping components often lacks barbs. To resolve this contradiction, this application also provides a clamping mechanism.

[0050] Specifically, see Figure 5 One embodiment of the clamping mechanism includes a clamping assembly and a connecting member 20. The clamping assembly includes a movable member 11 and a fixed member 12 movably connected to the movable member 11. The fixed member 12 cooperates with the movable member 11 to clamp the leaflets, and a second barb 121 is provided on the fixed member 12. It is worth noting that the movable member 11 of the clamping assembly can be the movable member 11 of any of the above embodiments, or it can be a conventional flat movable member 11. Further, the connecting member 20 is connected to the fixed member 12. The connecting member 20 has a through groove 21 that extends through both sides of the connecting member 20. The second barb 121 passes through the through groove 21, and one end of the second barb 121, away from the fixed member 12, extends out of the through groove 21. That is, the height of the second barb 121 perpendicular to the surface of the fixed member 12 is greater than the thickness of the connecting member 20.

[0051] The aforementioned clamping mechanism improves the stability of the clamping assembly by providing a second barb 121 on the fixing member 12, which increases the resistance between the fixing member 12 and the leaflet. Simultaneously, by connecting the connecting member 20 to the fixing member 12 and inserting the second barb 121 into the through groove 21 of the connecting member 20, with the end of the second barb 121 away from the fixing member 12 extending out of the through groove 21, the exposed length of the second barb 121 is reduced without increasing manufacturing complexity, thereby minimizing damage to the tissue and reducing the risk of injury to the chordae tendineae.

[0052] Furthermore, the fastener 12 has a first suture hole 122, and the connector 20 has a second suture hole 22, which are connected. The first suture hole 122 and the second suture hole 22 are used to thread a suture, thereby connecting and fixing the fastener 12 and the connector 20 through the suture. It is worth noting that the fixing method of the fastener 12 and the connector 20 is not limited to suturing; in other embodiments, it can also be fixed by welding or other methods.

[0053] Furthermore, at least two second barbs 121 are provided, and the at least two second barbs 121 are arranged at intervals along the length or width direction of the fixing member 12. For example, in this embodiment, the second barbs 121 are arranged in a row along the length direction of the fixing member 12. It is worth noting that in other embodiments, the second barbs 121 can also be arranged in multiple rows and columns along the length and width directions of the fixing member 12, thereby further improving the stability of the clamping assembly in clamping the leaflet. Preferably, the angle between the second barb 121 and the surface of the fixing member 12 is in the range of 10° to 90°. The length of the second barb 121 is in the range of 0.3mm to 2mm.

[0054] Correspondingly, in this embodiment, at least two through slots 21 are provided, and the first barbs 114 are correspondingly inserted into the through slots 21, or two or more are inserted into the same through slot 21. In another embodiment, the connector 20 may also have only one through slot 21, and all the second barbs 121 are disposed in the same through slot 21.

[0055] Preferably, the length of the connector 20 is the same as the length of the fixing member 12, and the width of the connector 20 is the same as the width of the fixing member 12, so that the projection of the connector 20 on the fixing member 12 overlaps with the fixing member, thus avoiding interference between the connector 20 and the moving member 11 due to the connector 20 being too large.

[0056] Further, see Figure 5In another aspect, this application also provides a valve repair device, which further includes a driving component and a clamping mechanism as described in any of the above embodiments. The driving component is connected to the fixing member 12 of the clamping mechanism, and the driving component is used to drive the fixing member 12 to move between an initial position and a clamping position, thereby causing the clamping mechanism to clamp or release the leaflet. Furthermore, the valve repair device may be provided with two or more clamping mechanisms, thereby enabling the valve repair device to clamp multiple leaflets simultaneously.

[0057] Specifically, one embodiment of the drive assembly includes a fixed frame 31, a transmission member 33, and a drive shaft 32. The fixed frame 31 is rotatably connected to the connecting member 20, the drive shaft 32 is movably mounted on the fixed frame 31, one end of the transmission member 33 is rotatably connected to the drive shaft 32, and the other end of the transmission member 33 is rotatably connected to the fixed member 12 or the connecting member 20. Preferably, in this embodiment, the fixed member 12 is provided with a clearance hole, the connecting member 20 has a transition portion 23 passing through the clearance hole, one end of the transmission member 33 is rotatably connected to the end of the drive shaft 32, and the other end of the transmission member 33 is rotatably connected to the transition portion 23 via a rotating shaft. Thus, by moving the drive shaft 32 up and down, the fixed member 12 and the moving member 11 can be driven to move relative to each other, thereby moving the fixed member 12 between the initial position and the clamping position, thereby clamping or releasing the heart valve leaflets. It is worth noting that in another embodiment, the transmission member 33 can also be disposed above the clamping assembly. In this case, one end of the transmission member 33 is rotatably connected to the middle section of the drive shaft 32, and the other end of the transmission member 33 is rotatably connected to the connector 20. Thus, by moving the drive shaft 32 up and down, the drive fixing member 12 can be moved between the initial position and the clamping position, thereby clamping or releasing the heart valve leaflets.

[0058] The aforementioned valve repair device configures the mating surface 111 of the moving member 11 at an angle to the first reference plane passing through the major axis 112 and the minor axis 113. This avoids the moving member 11 and the fixing member 12 being in the same plane during compression. Therefore, during the compression and placement of the clamping assembly into the delivery system, the moving member 11 will not prematurely interfere with the fixing member 12 in the direction of the minor axis 113. This allows the size of the moving member 11 in the direction of the minor axis 113 to be further compressed to the width of the fixing member 12, thereby reducing the overall volume of the clamping assembly and the delivery system and improving surgical safety. Simultaneously, by providing a second barb 121 on the fixing member 12, the second barb 121 increases the resistance between the fixing member 12 and the leaflet, thereby improving the stability of the clamping assembly in holding the leaflet. Meanwhile, by connecting the connector 20 to the fixing member 12 and inserting the second barb 121 into the through groove 21 of the connector 20, the end of the second barb 121 away from the fixing member 12 extends out of the through groove 21. This reduces the exposed length of the second barb 121 without increasing the difficulty of the process, thereby reducing the damage of the second barb 121 to the tissue and making it less likely to injure the tendineae.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A valve repair device, characterized in that, include: A clamping assembly includes a movable member and a fixed member. The movable member has a long axis extending along its length and a short axis extending along its width, the long axis intersecting the short axis. The movable member also has a mating surface for engaging with a leaflet, the mating surface forming an angle with a first reference plane passing through the long axis and the short axis. The fixed member engages with the movable member to clamp the leaflet, one end of the fixed member being connected to the movable member, and the other end being a free end. The fixed member has an initial position located on one side of the movable member and a clamping position located on the other side of the movable member, the fixed member having a tendency to return from the clamping position to the initial position. The movable member has a clearance for the fixed member to move between the initial position and the clamping position. A driving component is connected to the fixing member of the clamping component, and the driving component is used to drive the fixing member to move between an initial position and a clamping position.

2. The valve repair device according to claim 1, characterized in that The projection of the moving part onto the first reference plane forms a ring structure.

3. The valve repair device according to claim 2, characterized in that, The width of the movable component gradually decreases from the middle of the movable component toward both ends.

4. The valve repair device according to claim 1, characterized in that, The movable component is provided with a first barb, which extends along the clamping position near the fixed component.

5. The valve repair device according to claim 4, characterized in that, The first barb is provided in multiple forms, and the multiple first barbs are arranged at intervals on the moving part.

6. The valve repair device according to claim 5, characterized in that, The movable member has a proximal end and a distal end that are arranged opposite to each other, and the fixing member is connected to the proximal end. The length of the first barb gradually increases along the direction from the proximal end to the distal end.

7. The valve repair device according to claim 1, characterized in that, The movable member has a proximal end and a distal end that are disposed opposite to each other, the fixed member is connected to the proximal end, and the width of the mating surface gradually increases along the direction from the proximal end to the distal end.

8. The valve repair device according to claim 1, characterized in that, The movable member has a proximal end and a distal end that are arranged opposite to each other, the fixed member is connected to the proximal end, and the distal end is provided with a first connecting hole.

9. The valve repair device according to claim 4, characterized in that, The fastener is provided with a second barb, the extension direction of which is opposite to that of the first barb.

10. The valve repair device according to claim 1, characterized in that, The projection of the moving part onto a second reference plane that passes through the long axis of the moving part and is perpendicular to the first reference plane has a curved structure.

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