Annuloplasty device

Abstract

This invention relates to the field of medical device technology, specifically providing a valve annulus retraction device. The valve annulus retraction device includes a main arm, a first clamping arm, and a second clamping arm; the first clamping arm is rotatably connected to the main arm; the second clamping arm is rotatably connected to the main arm; the first clamping arm has a first puncture channel, and the second clamping arm has a second puncture channel; the valve annulus retraction device also includes a puncture needle and a traction member, the puncture needle being able to connect to a suture via the traction member; the valve annulus retraction device is configured such that when the first and second clamping arms are in a clamping state, the traction member can pull the suture along with the puncture needle through the second puncture channel and out of the first puncture channel. The valve annulus retraction device disclosed in this application has advantages such as simple structure, accurate positioning, ease of operation, and safe use.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a valve annulus shrinkage device. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] The mitral valve is a crucial component of the heart, located between the left atrium and left ventricle. During heart function, blood is pumped from the left atrium into the left ventricle. As the left ventricle contracts and pumps blood throughout the body, the mitral valve closes to prevent backflow into the left atrium. Conditions such as ischemic heart disease or dilated cardiomyopathy can cause enlargement of the left ventricle or atrium, leading to dilation of the mitral valve annulus. In such cases, when the left ventricle contracts, the anterior and posterior leaflets of the mitral valve may fail to engage, resulting in regurgitation and leakage.

[0004] The most common method for repairing damaged mitral valve function is through surgical valve replacement or repair. These surgeries are highly invasive, requiring an incision in the patient's chest and cardiopulmonary bypass. Because patients with impaired mitral valve function are often relatively fragile, the surgery carries significant risks. Furthermore, minimally invasive annular reduction surgery is a relatively recent development, and the existing instruments used for this procedure have limitations, such as difficulty in manipulation. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of high difficulty in operation of existing valve annulus retraction devices. This purpose is achieved through the following technical solution:

[0006] This application provides a valve annulus retraction device, including a main arm, a first clamping arm, and a second clamping arm; the first clamping arm is rotatably connected to the main arm; the second clamping arm is rotatably connected to the main arm; the first clamping arm has a first puncture channel, and the second clamping arm has a second puncture channel; the valve annulus retraction device also includes a puncture needle and a traction member, the puncture needle being able to connect to a suture via the traction member; the valve annulus retraction device is configured such that when the first clamping arm and the second clamping arm are in a clamping state, the traction member can pull the suture along with the puncture needle through the second puncture channel and out of the first puncture channel.

[0007] This application, by including a first clamping arm and a second clamping arm in a valve annulus retraction device, enables the valve annulus to be clamped at a designated location during valve annulus retraction surgery, allowing for accurate and rapid clamping of the valve annulus at that location. Because the valve annulus retraction device captures the designated location of the valve annulus through clamping, this capture method facilitates not only external manipulation but also adjustments to the capture position. Furthermore, since the valve annulus is in a clamped state during the surgery, displacement of the targeted valve annulus position is effectively prevented, facilitating targeted manipulation of the clamped position. This effectively reduces the difficulty of the surgery and improves its efficiency and success rate.

[0008] Furthermore, this application provides a first puncture channel on the first clamping arm and a second puncture channel on the second clamping arm. When the first and second clamping arms are in a clamping state, the puncture tip of the puncture needle can pass through the first puncture channel via the second puncture channel. The combined effect of the first and second puncture channels facilitates puncture of the clamped tissue. Moreover, the combined effect of the first and second clamping arms results in a smaller puncture wound on the clamped tissue, effectively reducing the risk of valve annulus tearing due to improper operation and improving the safety and reliability of valve annulus reduction surgery.

[0009] This application includes a traction element in the valve annulus retraction device, and the traction element can pull the suture along with the puncture needle through the second puncture channel and out of the first puncture channel, thereby further connecting the suture to the valve annulus.

[0010] In addition, the valve annulus retraction device according to this application may also have the following additional technical features:

[0011] As some preferred embodiments of this application, the valve annulus retraction device may further selectively include a suture, and the puncture needle is connected to the suture via a traction member; the traction member and the puncture needle have a connected state when the traction member is being pulled and a separated state after passing through the first puncture channel.

[0012] This application allows the traction member and the puncture needle to have a connected state when the traction member is being pulled and a separated state after the needle passes through the first puncture channel. This allows the puncture needle to be connected or separated from the traction member according to actual needs. When the traction member and the puncture needle pass through the first puncture channel, the traction member is separated from the puncture needle so that the traction member can be connected to the first clamping arm.

[0013] As some preferred embodiments of this application, the first puncture channel is further selectively made to penetrate the clamping portion of the first clamping arm along the puncture direction of the puncture needle; the second puncture channel extends from the first end of the second clamping arm to the clamping portion of the second clamping arm, and the second puncture channel penetrates both ends of the second clamping arm; when the first clamping arm and the second clamping arm are in the clamping state, the first puncture channel and the second puncture channel are directly opposite each other.

[0014] As some preferred embodiments of this application, the first puncture channel is further selectively and gradually narrowed along the puncture direction of the puncture needle. By making the first puncture channel gradually narrowed along the puncture direction of the puncture needle, this application can position, restrict, and guide the puncture needle, making the puncture position of the puncture needle more accurate and facilitating the puncture tip of the puncture needle to exit through the first puncture channel, thereby reducing the difficulty of puncture.

[0015] As some preferred embodiments of this application, the suture is further selectively provided with a limiting structure for connecting the valve ring, the first end of the traction member is provided with a traction part for connecting the first clamping arm, the puncture needle can be connected to the traction member through the traction part, the second end of the traction member is provided with a traction ring for connecting the suture, the suture passes through the traction ring and is connected to the traction member, and the traction part can pass through the first puncture channel with the puncture needle and be connected to the first clamping arm.

[0016] This application, by setting a limiting structure on the suture, can reliably connect the suture to the valve annulus, preventing the suture from being pulled off the valve annulus during the traction of the first clamping arm. Furthermore, this application, by setting a traction part on the first end of the traction member and a traction ring on the second end of the traction member, allows the puncture needle to pull the suture via the traction member, enabling the limiting structure to be quickly positioned during surgery.

[0017] As some preferred embodiments of this application, the puncture needle is further selectively made hollow, and the traction part can be adapted to connect with the hollow needle; when the puncture needle and the traction part are connected, at least part of the traction part is located inside the puncture end of the puncture needle; the valve annulus retraction device also includes a pusher that extends from the proximal end of the hollow needle and can push the traction part so that the traction part can be separated from the puncture needle and connected to the first clamping arm.

[0018] This application, by incorporating a pusher, can disengage the puncture needle from the traction unit and connect the traction unit to the clamping part of the first clamping arm. This allows the first clamping arm to pull the suture, facilitating the smooth execution of valve annulus reduction surgery. Furthermore, this design ensures a secure connection between the puncture needle and the traction unit during puncture, and also facilitates separation of the puncture needle from the suture. In addition, it offers advantages such as simple structure and ease of operation.

[0019] As some preferred embodiments of this application, a limiting structure mounting position is further selectively provided near the clamping part of the second clamping arm. The limiting structure can be connected to the limiting structure mounting position. The limiting structure is configured such that when the traction member is pulled by the first clamping arm, the limiting structure can be disconnected from the limiting structure mounting position.

[0020] This application provides a limiting structure mounting position near the clamping part of the second clamping arm, allowing the limiting structure to connect with this mounting position. This brings the limiting structure connected to the suture closer to the clamped tissue, minimizing the risk of the limiting structure snagging on nearby tissues and ensuring safer use of the valve annulus retraction device. Furthermore, the limiting structure can be quickly positioned under the traction of the traction component.

[0021] As some preferred embodiments of this application, the clamping portion of the first clamping arm is further selectively provided with a first clamping surface, and the clamping portion of the second clamping arm is provided with a second clamping surface; the first puncture channel passes through the first clamping surface; the second clamping surface is located at the end face of the second end of the second clamping arm, and the second puncture channel passes through the second clamping surface; when the first clamping arm and the second clamping arm are in a clamping state, the first puncture channel and the second puncture channel are facing each other.

[0022] This application allows the first puncture channel to pass through the first clamping surface and the second puncture channel to pass through the second clamping surface, thereby enabling the puncture needle to pass through the tissue between the first and second clamping surfaces. Under the action of the first and second clamping surfaces, the position of the clamped valve annulus can be better constrained, making the puncture position more accurate and effectively reducing the damage caused to the valve annulus by the puncture needle during the puncture process.

[0023] As some preferred embodiments of this application, the first end of the first clamping arm is further selectively hinged to the main body arm, and the second end of the first clamping arm is bent toward the second clamping arm; and / or, the first end of the second clamping arm is hinged to the main body arm, and the second end of the second clamping arm is bent toward the first clamping arm.

[0024] As some preferred embodiments of this application, a first clearance region is selectively provided on the side wall of the main body arm, the first clamping arm is adapted to the first clearance region, a first connecting position is provided at the proximal end of the first clearance region, the first end of the first clamping arm is hinged to the first connecting position, the clamping part of the first clamping arm is located at the second end of the first clamping arm, and the first clamping arm has a state in which it is located within the first clearance region and a state in which it extends out of the first clearance region after rotation to clamp the valve annulus.

[0025] As some preferred embodiments of this application, a second clearance region is further selectively provided on the side wall of the main body arm, the second clamping arm is adapted to the second clearance region, a second connecting position is provided at the proximal end of the second clearance region, the first end of the second clamping arm is hinged to the second connecting position, the clamping part of the second clamping arm is located at the second end of the second clamping arm, the second clamping arm has a state of being located within the second clearance region and a state of extending out of the second clearance region after rotation to clamp the valve annulus; the first clearance region is located between the distal end of the main body arm and the second clearance region.

[0026] This application provides a first and a second clearance region on the side wall of the main arm, and the first clamping arm is positioned within the first clearance region and extends out of the first clearance region after rotation to clamp the valve annulus. The second clamping arm is positioned within the second clearance region and extends out of the second clearance region after rotation to clamp the valve annulus. This gives the valve annulus retraction device a folding function, facilitating its insertion into the heart via minimally invasive surgery and allowing for adjustment as needed during use.

[0027] As some preferred embodiments of this application, the annular retraction device further selectively includes a first control member for controlling the rotation of the first clamping arm; the main arm is provided with a first channel connecting the proximal end of the main arm and the connection between the first clamping arm and the main arm, and the first control member passes through the first channel and is connected to the first clamping arm; the annular retraction device also includes a second control member for controlling the rotation of the second clamping arm; the main arm is provided with a second channel connecting the proximal end of the main arm and the connection between the second clamping arm and the main arm, and the second control member passes through the second channel and is connected to the second clamping arm.

[0028] This application includes a first control element in the valve annulus retraction device, and connects the first control element to a first clamping arm. This allows control of the first clamping arm by controlling the first control element, offering advantages such as convenient operation and simple structure. Similarly, by including a second control element in the valve annulus retraction device and connecting the second control element to a second clamping arm, the second clamping arm can be controlled by controlling the second control element, achieving the same technical effect. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1A schematic diagram of the valve annulus retraction device involved in the present invention is shown, in which the valve annulus retraction device is in an unused state.

[0031] Figure 2 A schematic diagram of the valve annulus retraction device involved in the present invention is shown, in which the valve annulus retraction device is in a clamping state.

[0032] Figure 3 for Figure 1 A magnified view of the structure at point A in the middle;

[0033] Figure 4 for Figure 2 A magnified view of the structure at point B in the middle section;

[0034] Figure 5 A partial structural diagram of the valve annulus retraction device involved in the present invention is shown schematically, in which the valve annulus retraction device is in an unused state;

[0035] Figure 6 A partial structural diagram of the valve annulus retraction device involved in the present invention is shown schematically, in which the valve annulus retraction device is in a clamping state.

[0036] Figure 7 A partial structural diagram of the assembly formed by the main arm, the first clamping arm, and the first control member of the valve annulus retraction device according to the present invention is shown schematically, wherein the first clamping arm is located in the first clearance area.

[0037] Figure 8 A partial structural diagram of the assembly formed by the main arm, the first clamping arm, and the first control member of the valve annulus retraction device involved in the present invention is shown schematically, with the first clamping arm in an extended state.

[0038] Figure 9 The schematic diagram shows the structural diagram of the assembly formed by the first clamping arm and the first control member of the valve annulus retraction device according to the present invention.

[0039] Figure 10 The schematic diagram shows the structural schematic of the main arm of the valve annulus retraction device involved in the present invention from one perspective;

[0040] Figure 11 The schematic diagram shows the main body arm of the valve annulus retraction device involved in this invention from another perspective;

[0041] Figure 12 A schematic diagram of the structure of the first clamping arm of the valve annulus retraction device involved in the present invention is shown.

[0042] Figure 13 for Figure 12A cross-sectional view of the first clamping arm shown;

[0043] Figure 14 A schematic diagram of the structure of the second clamping arm of the valve annulus retraction device involved in the present invention is shown.

[0044] Figure 15 for Figure 14 A cross-sectional view of the second clamping arm shown;

[0045] Figure 16.1 A schematic diagram of the structure of a traction component according to the present invention is shown.

[0046] Figure 16.2 A schematic diagram of another traction component involved in the present invention is shown.

[0047] Figure 17 A schematic diagram of the structure of the component formed by the suture and limiting structure involved in the present invention is shown.

[0048] Figure 18 The diagram illustrates a state of the valve annulus retraction device involved in the present invention during use, in which the puncture needle and suture are not inserted into the first puncture channel.

[0049] Figure 19 The diagram illustrates a state of the valve annulus retraction device involved in the present invention during use, in which the puncture needle and suture are in the state of passing through the first puncture channel, and the first limiting structure is dislodged from the puncture needle.

[0050] Figure 20 The diagram illustrates a state of the valve annulus retraction device of the present invention during use, in which the puncture needle is in the retracted state and the first limiting structure is connected to the first clamping arm.

[0051] Figure 21 The diagram schematically illustrates the first state of the valve annulus retraction device according to the present invention during use, in which the first clamping arm and the second clamping arm are in the state of clamping the valve annulus.

[0052] Figure 22 The diagram schematically illustrates the second state of the valve annulus retraction device involved in the present invention during use. The diagram shows the state in which the traction member passes through the puncture needle and is connected to the first clamping arm, and the limiting structure is located within the limiting structure mounting position.

[0053] Figure 23 The diagram schematically illustrates the third state of the valve annulus retraction device involved in the present invention during use. The diagram shows the state in which the traction member passes through the puncture needle and is connected to the first clamping arm, and the limiting structure is separated from the limiting structure mounting position.

[0054] Figure 24 The diagram schematically illustrates the fourth state of the valve annulus retraction device involved in the present invention during use, showing the state in which the first clamping arm passes the suture through the valve annulus via the traction member.

[0055] Figure 25 The diagram schematically illustrates the fifth state of the valve annulus retraction device involved in the present invention during use, in which the first clamping arm passes the suture through the valve annulus via the traction member, and the limiting structure is in the in-position state.

[0056] Figure 26 The diagram illustrates the state of suturing completed by the valve annulus reduction device involved in this invention.

[0057] Figure 27 The diagram schematically illustrates a partial structural diagram of some embodiments of the present invention when the suture is completed but not locked by the locking unit;

[0058] Figure 28 The diagram illustrates a partial structural schematic of the suture after it has been locked by the locking unit in some embodiments of the present invention.

[0059] Figure 29 A schematic diagram illustrating a valve annulus repaired using the valve annulus retraction device provided by the present invention is shown.

[0060] Figure 30 This schematically illustrates another example of valve annulus repair using the valve annulus retraction device provided by the present invention.

[0061] Explanation of reference numerals in the attached figures:

[0062] 10. Valve annulus retraction device;

[0063] 1. Main arm; 11. First clearance area; 111. First connecting position; 12. Second clearance area; 121. Second connecting position; 13. First channel; 14. Second channel; 15. Puncture needle channel;

[0064] 2. First clamping arm; 21. Clamping part of the first clamping arm; 22. First puncture channel; 23. Displacement notch; 24. First clamping surface;

[0065] 3. Second clamping arm; 31. Clamping part of the second clamping arm; 32. Second puncture channel; 33. Second clamping surface; 34. Limiting structure mounting position;

[0066] 4. Puncture needle; 41. Hook notch;

[0067] 51. Sewing thread; 52. Limiting structure; 53. Traction component; 531. Traction part; 532. Traction ring; 533. Traction line; 54. Locking unit;

[0068] 6. Push item;

[0069] 7. First control component;

[0070] 8. Connecting pipe;

[0071] 9. Control handle;

[0072] X, valve ring; Y, heart. Detailed Implementation

[0073] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0074] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0075] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0076] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0077] In this application, "above a certain number" includes the number itself; for example, "eight or more" includes eight.

[0078] It should be noted that "multiple" in this application includes two.

[0079] It should be noted that the terms "distal" and "proximal" are used as directional terms, which are commonly used in the field of interventional medical devices. "Distal" refers to the end furthest from the operator during the procedure, while "proximal" refers to the end closest to the operator. Axial direction refers to the direction parallel to the line connecting the center of the distal and proximal ends of the medical device; radial direction refers to the direction perpendicular to the aforementioned axial direction.

[0080] This application provides a valve annulus retraction device 10, specifically as follows: Figures 1 to 15 As shown, the device includes a main arm 1, a first clamping arm 2, and a second clamping arm 3; the first clamping arm 2 is rotatably connected to the main arm 1; the second clamping arm 3 is rotatably connected to the main arm 1; the first clamping arm 2 is provided with a first puncture channel 22, and the second clamping arm 3 is provided with a second puncture channel 32; the valve annulus retraction device also includes a puncture needle 4 and a traction member 53, the puncture needle 4 can be connected to the suture 51 via the traction member 53; the valve annulus retraction device 10 is configured such that when the first clamping arm 2 and the second clamping arm 3 are in the clamping state, the traction member 53 can pull the suture 51 along with the puncture needle 4 through the second puncture channel 32 and out of the first puncture channel 22.

[0081] It should be noted that the structure of the main arm 1 in this application is not specifically limited. To facilitate the insertion of the valve annulus retraction device 10 from the apex of the heart Y into a specific location within the heart Y during surgery, in specific implementation, such as... Figures 1 to 8 , Figure 10 and Figure 11 As shown, the main body arm 1 is elongated, and the distal end of the main body arm 1 is designed as a conical structure that can perform puncture and guidance functions.

[0082] It should be noted that the structures of the first clamping arm 2 and the second clamping arm 3 in this application are not specifically limited; they can be any structural form that can cooperate with each other to clamp the annulus. In specific implementations, the first clamping arm 2 can be selectively made into a rod-like or strip-like shape, etc. Specifically, as shown... Figures 3 to 9 , Figure 12 and Figure 13 As shown, the first clamping arm 2 is generally strip-shaped; and the first end of the first clamping arm 2 is hinged to the main body arm 1, while the second end of the first clamping arm 2 is the clamping part of the first clamping arm. Similarly, the second clamping arm 3 can also be selectively rod-shaped or strip-shaped. Specifically, as shown... Figures 3 to 6 , Figure 14 and Figure 15 As shown, the second clamping arm 3 is generally arranged in a strip shape, and the first end of the second clamping arm 3 is hinged to the main body arm 1, and the second end of the second clamping arm 3 is set as the clamping part of the second clamping arm.

[0083] It should be noted that the rotation angle of the first clamping arm 2 is not specifically limited; it can be any angle required to cooperate with the second clamping arm 3 in clamping the valve ring X. Similarly, the rotation angle of the second clamping arm 3 is not specifically limited; it can be any angle required to cooperate with the first clamping arm 2 in clamping the valve ring X.

[0084] It should be noted that the materials of the main arm 1, the first clamping arm 2, and the second clamping arm 3 in this application are not specifically limited; in specific implementation, it is preferable that the main arm 1, the first clamping arm 2, and the second clamping arm 3 are made of medical implantable materials, and specifically, the main arm 1, the first clamping arm 2, and the second clamping arm 3 may be selectively made of medical implantable materials such as stainless steel and cobalt-chromium alloy.

[0085] It should also be noted that the structure of the puncture needle 4 in this application is not specifically limited; it can be any structure capable of traction of the traction member 53 and passing through the first puncture channel 22 and the second puncture channel 32. In specific implementation, it is preferable to set the puncture needle 4 as a hollow needle capable of connecting to the traction member 53, specifically as follows: Figures 18 to 20 As shown, the puncture end of the puncture needle 4 can be connected to the traction member 53.

[0086] This application, by including a first clamping arm 2 and a second clamping arm 3 in the valve annulus retraction device 10, allows for accurate and rapid clamping of the valve annulus X at a designated position during valve annulus retraction surgery. Using clamping to capture the designated position of the valve annulus X not only facilitates adjustment of the capture position but also enables external manipulation. Furthermore, during the surgery, because the designated position of the valve annulus X is clamped by the first clamping arm 2 and the second clamping arm 3, the target position of the valve annulus X can be effectively restricted, allowing for targeted manipulation of the clamping position. This effectively reduces the difficulty of the surgery and improves its efficiency and success rate.

[0087] Furthermore, when puncturing the valve annulus X under the clamping of the first clamping arm 2 and the second clamping arm 3, the damage to the valve annulus tissue by the puncture needle 4 can be reduced, thereby decreasing the risk of valve annulus X tearing and effectively improving the safety and reliability of valve annulus X annulus contraction surgery. In addition, by providing a first puncture channel 22 on the first clamping arm 2 and a second puncture channel 32 on the second clamping arm 3, the puncture needle 4 is easily punctured by the first puncture channel 22 and the second puncture channel 32, which guide the puncture needle 4.

[0088] As some preferred embodiments of this application, such as Figure 1 and Figure 2 As shown, the annular retraction device 10 also includes a connecting tube 8 and a control handle 9. One end of the connecting tube 8 is connected to the proximal end of the main arm 1, and the other end of the connecting tube 8 is connected to the control handle 9. The proximal end of the first control member 7 is connected to the control handle 9, and the distal end of the first control member 7 passes through both ends of the connecting tube 8 and is connected to the first clamping arm 2. The control handle 9 can control the rotation of the first clamping arm 2 via the first control member 7. Similarly, the proximal end of the second control member is connected to the control handle 9, and the distal end of the second control member passes through both ends of the connecting tube 8 and is connected to the second clamping arm 3. The control handle 9 can control the rotation of the second clamping arm 3 via the second control member. In specific implementation, the position and state of the first clamping arm 2 and the second clamping arm 3 are adjusted by controlling the first control member 7 and the second control member as needed.

[0089] As some preferred embodiments of this application, such as Figures 6 to 9As shown, the main arm 1 has a first channel 13 inside, connecting the proximal end of the main arm 1 and the connection point between the first clamping arm 2 and the main arm 1. The distal end of the first control member 7 passes through both ends of the connecting tube 8 and the first channel 13 in sequence and connects to the first clamping arm 2. It should be noted that the connection method between the distal end of the first control member 7 and the first clamping arm 2 is not specifically limited, as long as it meets the requirement of the first control member 7 to control the first clamping arm 2. In specific implementation, the distal end of the first control member 7 can be connected to the first clamping arm 2 by a fixed connection or a hinged connection; as a preferred embodiment, such as... Figure 9 As shown, preferably, the distal end of the first control member 7 is hinged to the first clamping arm 2 so that the control stress between the first control member and the first clamping arm 2 can be released during operation.

[0090] It should also be noted that the number of first control elements 7 included in the annular retraction device 10 is not specifically limited. In specific implementations, the first clamping arm 2 can be selectively controlled by one or more first control elements 7. In specific implementations, the annular retraction device 10 includes two first control elements 7, and the main body arm 1 has two first channels 13 (e.g., Figure 11 As shown in the diagram, each first control element 7 passes through a first channel 13 and is connected to the first clamping arm 2. In actual use, the first control element 7 is pulled towards the proximal or distal end of the annular retraction device 10 by the control handle 9, so that the first clamping arm 2 rotates.

[0091] To facilitate the successful puncture of the puncture needle 4, a puncture needle channel 15 is provided on the main body arm 1, connecting the proximal end of the main body arm 1 and the connection point between the second clamping arm 3 and the main body arm 1. During the operation, the puncture needle 4 can enter the second puncture channel 32 through the puncture needle channel 15, and then exit through the first puncture channel 22 through the second puncture channel 32.

[0092] In some preferred embodiments of this application, the main body arm 1 is further provided with a second channel 14 connecting the proximal end of the main body arm 1 and the connection point between the second clamping arm 3 and the main body arm 1. The distal end of the second control member passes sequentially through both ends of the connecting tube 8, the second channel 14, and connects to the second clamping arm 3. It should be noted that the connection method between the distal end of the second control member and the second clamping arm 3 is not specifically limited, as long as it meets the requirement of the second control member to control the second clamping arm 3. In specific implementations, the distal end of the second control member can be connected to the second clamping arm 3 by a fixed connection or a hinged connection.

[0093] It should also be noted that the number of second control elements included in the annular retraction device 10 is not specifically limited. In specific implementations, the second clamping arm 3 can be selectively controlled by one or more second control elements. In specific implementations, the annular retraction device 10 includes two second control elements, and the main body arm 1 has two second channels 14 (e.g., Figure 11 As shown), each second control element passes through a second channel 14 and is connected to the second clamping arm 3. In actual use, the second control element is pulled towards the proximal or distal end of the annular retraction device 10 by the control handle 9, so that the second clamping arm 3 rotates.

[0094] It should be noted that there are no specific restrictions on the structure and material of the first control element and the second control element. In specific implementation, the first control element 7 and the second control element can be selectively made of control wires made of implantable metal materials. Specifically, the first control element 7 and the second control element can be selectively made of materials such as stainless steel and nickel-titanium alloy.

[0095] This application includes a first control member 7 connected to the first clamping arm 2 in the annular retraction device 10, thereby allowing control of the first clamping arm 2 by controlling the first control member 7. This not only provides convenient operation but also has the advantages of simple structure. Similarly, by including a second control member connected to the second clamping arm 3 in the annular retraction device 10, the same technical effect can be achieved by controlling the second control member to control the second clamping arm 3.

[0096] In addition, this application enables the first clamping arm 2 to be controlled by the first control element 7 and the second clamping arm 3 to be controlled by the second control element, so that the first clamping arm 2 and the second clamping arm 3 have the characteristic of being independently controlled. Thus, the position and state of the first clamping arm 2 and the second clamping arm 3 can be flexibly adjusted according to the needs of the surgical procedure, so that the valve annulus shrinkage device 10 can fully meet the adjustment needs during the surgical operation.

[0097] As some preferred embodiments of this application, the valve annulus retraction device 10 may further selectively include a suture 51, with the puncture needle 4 connected to the suture 51 via a traction member 53; the traction member 53 and the puncture needle 4 have a connected state when the traction member 53 is being pulled and a separated state after passing through the first puncture channel 22. In specific implementations, the puncture needle 4 may be selectively hooked and connected to the traction member 53, and when separation is required, the puncture needle 4 may be selectively separated from the traction member 53 by other components.

[0098] During the specific operation, when the puncture needle 4 is puncturing, the traction member 53 is connected to the puncture needle 4 and the suture 51, so that the puncture needle 4 can pull the suture 51 through the traction member 53; when the puncture end of the puncture needle 4 passes through the first puncture channel 22, the traction member 53 is separated from the puncture needle 4 and can be connected to the first clamping arm 2, so that the first clamping arm 2 can pull the suture 51 through the traction member 53.

[0099] This application allows the traction member 53 and the puncture needle 4 to be in a connected state when the traction member 53 is being pulled and in a separated state after the needle passes through the first puncture channel 22. This allows the puncture needle 4 to be connected or separated from the traction member 53 according to actual needs. When the traction member 53 and the puncture needle 4 pass through the first puncture channel 22, the traction member 53 is separated from the puncture needle 4 so that the traction member 53 can be connected to the first clamping arm 2.

[0100] As some preferred embodiments of this application, the first puncture channel 22 is further selectively configured as a puncture hole that penetrates the clamping portion 21 of the first clamping arm along the puncture direction of the puncture needle 4; the first end of the second clamping arm 3 is connected to the main body arm 1, the clamping portion 31 of the second clamping arm is located at the second end of the second clamping arm 3, the second puncture channel 32 extends from the first end of the second clamping arm 3 to the clamping portion of the second clamping arm, and the second puncture channel 32 penetrates both ends of the second clamping arm 3 (e.g., ...). Figure 15 (As shown). In specific implementation, when the first clamping arm 2 and the second clamping arm 3 are in a clamping state, the second puncture channel 32 corresponding to the clamping part 31 of the second clamping arm is coaxial with the first puncture channel 22, and both the first puncture channel 22 and the second puncture channel 32 are adapted to the puncture needle 4 so that the puncture needle 4 can pass through the first puncture channel 22 and the second puncture channel 32. Further, as shown... Figure 12 and Figure 13 As shown, the first puncture channel 22 is a straight channel penetrating the clamping part 21 of the first clamping arm, as... Figure 15 As shown, the second puncture channel 32 is a bent channel that passes through the second clamping arm 3 and bends toward the first clamping arm 2. In order to facilitate the smooth passage of the puncture needle 4 through the bend, the bend of the second puncture channel 32 is generally gourd-shaped. In specific implementation, the bend of the second puncture channel 32 can also be selectively set into other structural forms that allow the puncture needle to pass through.

[0101] In order to facilitate the smooth insertion of the puncture needle 4, it is further preferred that the orifice size of the insertion end of the puncture hole is larger than the orifice size of the outlet of the second puncture channel 32. When the first clamping arm 2 and the second clamping arm 3 are in the clamping state, even if there is a certain misalignment between the first puncture channel 22 and the second puncture channel 32, the puncture needle 4 can still be inserted through the second puncture channel 32 and exited through the first puncture channel 22, so as to improve the adaptability of the valve annulus shrinkage device 10.

[0102] In order to enable the puncture needle 4 to play a role in positioning, restricting, and guiding during the puncture process, the puncture hole is further selectively tapered along the puncture direction of the puncture needle 4. In specific implementation, such as... Figure 13 As shown, the puncture hole can be selectively set as a tapered hole extending from the inlet of the first puncture hole to the outlet of the first puncture hole. By setting the puncture hole to be tapered, this application can also make the puncture position of the puncture needle 4 more accurate, and also make it easier for the puncture end of the puncture needle 4 to pass through the first puncture channel 22, which can effectively reduce the puncture difficulty of the puncture needle 4.

[0103] As some preferred embodiments of this application, the suture 51 is further selectively provided with a limiting structure 52 for connecting the valve ring X (e.g., Figure 17 As shown), the first end of the traction member 53 is provided with a traction part 531 for connecting the first clamping arm 2 (as shown). Figure 16.1 and Figure 16.2 As shown, the puncture needle 4 can be connected to the traction member 53 via the traction part 531. The second end of the traction member 53 is provided with a traction ring 532 for connecting the suture 51. The suture 51 passes through the traction ring 532 and is connected to the traction member 53. The traction part 531 can pass through the first puncture channel 22 with the puncture needle 4 and be connected to the first clamping arm 2.

[0104] It should be noted that the limiting structure 52 in this application is not specifically limited; it can be any structure capable of preventing the suture 51 from being pulled out of the punctured tissue. Preferably, the limiting structure 52 can be selectively configured as a pad fitted over the suture 51. In specific implementations, such as... Figure 17 As shown, the limiting structure 52 is a square-shaped gasket. As an alternative implementation, the limiting structure 52 can also be selectively configured into other structural forms, such as circular, triangular, etc.

[0105] It should be noted that the structure of the traction element 53 in this application is not specifically limited, and it can be any structural form that meets the requirements for use in valve annulus reduction surgery; in specific implementation, such as Figure 16.1 and Figure 16.2As shown, the traction member 53 is arranged in a linear shape. The traction part 531 is located at the first end of the traction member 53, and the traction ring 532 is located at the second end of the traction member 53. The traction part 531 and the traction ring 532 are connected by the traction line 533.

[0106] Furthermore, the structure of the traction unit 531 is not specifically limited; it can be any structure capable of connecting to the puncture needle 4 and the first clamping arm 2. In specific implementations, such as... Figure 16.1 , Figure 16.2 , Figures 18 to 20 As shown, the traction part 531 is a short rod structure that can be adapted to the puncture needle 4, and one end of the traction line 533 is connected to the middle of the short rod structure. When the traction part 531 passes through the first puncture channel 22 with the puncture needle 4, and after the traction part 531 separates from the puncture needle 4, the angle between the traction part 531 and the traction line 533 changes, thereby causing the traction part 531 to engage with the first clamping arm 2, so as to realize the connection between the traction member 53 and the first clamping arm 2.

[0107] This application, by providing a limiting structure 52 on the suture 51, ensures a secure connection between the suture 51 and the valve annulus X, preventing the suture 51 from being pulled off the valve annulus X during the traction process of the first clamping arm 2. Furthermore, by providing a traction part 531 at the first end of the traction member 53 and a traction ring 532 at the second end of the traction member 53, this application allows the puncture needle 4 to traction the suture 51 via the traction member 53, enabling the limiting structure 52 to be quickly positioned during surgery.

[0108] As some preferred embodiments of this application, the puncture needle 4 is further selectively made into a hollow needle, and the traction part 531 can be adapted to connect with the hollow needle; when the puncture needle 4 and the traction part 531 are in the connected state, at least a portion of the traction part 531 is located inside the puncture end of the puncture needle 4 (e.g., Figure 18 (As shown); the annular retraction device 10 also includes a pusher 6, which extends from the proximal end of the hollow needle and can push the traction part 531 so that the traction part 531 can be separated from the puncture needle 4 and connected to the first clamping arm 2.

[0109] It should be noted that the connection method between the puncture needle 4 and the traction member 53 is not specifically limited; it can be any configuration that meets the needs of connecting and separating the puncture needle 4 and the traction member 53, such as... Figure 18 As shown, the puncture needle 4 is a hollow needle, and a hooking notch 41 is provided on the side wall of the puncture end of the puncture needle 4. The traction part 531 is inserted into the puncture end of the puncture needle 4 and hooked with the hooking notch 41. During the puncture process of the puncture needle 4, the puncture needle 4 can pull the suture 51 through the traction part 53.

[0110] In specific implementation, such as Figure 19As shown, the pusher 6 is configured as a push rod capable of inserting a hollow needle. When it is necessary to connect the traction member 53 to the clamping part 21 of the first clamping arm, the push rod pushes the traction part 531 out of the hollow needle. Under the action of the traction part 531, the suture 51 is connected to the first clamping arm 2. This application, by configuring the puncture needle 4 as a hollow needle and providing the pusher 6, can release the connection between the puncture needle 4 and the traction member 53 under the action of the pusher, and connect the traction member 53 to the first clamping arm 2. This allows the first clamping arm 2 to pull the suture 51 through the traction member 53, facilitating the smooth implementation of the valve annulus reduction surgery. Using the above configuration not only ensures that the puncture needle 4 can be securely connected to the traction member 53 during puncture, but also facilitates the separation of the puncture needle 4 from the traction member 53. In addition, it has the advantages of simple structure and convenient operation.

[0111] As some preferred embodiments of this application, a limiting structure mounting position 34 is selectively provided near the clamping portion 31 of the second clamping arm. The limiting structure 52 can be connected to the limiting structure mounting position 34. The limiting structure 52 is configured such that when the traction member 53 is pulled by the first clamping arm 2, the limiting structure 52 can be disengaged from the limiting structure mounting position 34. The limiting structure mounting position 34 is not specifically limited and can be any structural form that can be used to fix the limiting structure. In specific implementations, such as... Figure 15 As shown, the limiting structure mounting position 34 is a mounting groove adapted to the limiting structure 52. The mounting groove is located on the side wall near the clamping part 31 of the second clamping arm. The limiting structure 52 can be installed in the mounting groove. When the limiting structure 52 is pulled by the sewing thread 51, the limiting structure 52 is disconnected from the mounting groove and can be disengaged from the mounting groove. It should also be noted that the mounting groove is not limited to the position shown in the figure. It can also be set in other positions adjacent to the clamping part 31 of the second clamping arm.

[0112] This application provides a limiting structure mounting position 34 near the clamping part 31 of the second clamping arm, and allows the limiting structure 52 to connect to the limiting structure mounting position 34. This brings the limiting structure 52, connected to the suture 51, closer to the clamped tissue, thereby minimizing the risk of the limiting structure 52 hooking onto nearby tissues (such as chordae tendineae), and making the valve annulus retraction device 10 safer to use. Furthermore, under the traction of the traction member 53, the limiting structure 52 can be quickly positioned.

[0113] As some preferred embodiments of this application, the clamping portion 21 of the first clamping arm is further selectively provided with a first clamping surface 24, and the clamping portion 31 of the second clamping arm is provided with a second clamping surface 33; the first puncture channel 22 passes through the first clamping surface 24; the second clamping surface 33 is located on the end face of the second end of the second clamping arm 3, and the second puncture channel 32 passes through the second clamping surface 33; when the first clamping arm 2 and the second clamping arm 3 are in a clamping state, the first puncture channel 22 and the second puncture channel 32 are directly opposite each other. In specific implementation, it is preferable to make the first clamping surface 24 a plane (e.g., ...). Figure 13 As shown), the second clamping surface 33 is set as a plane (e.g. Figure 15 As shown), when the first clamping arm 2 and the second clamping arm 3 are in the clamping state, the first clamping surface 24 and the second clamping surface 33 face each other to clamp the valve ring X tissue. In some preferred embodiments of this application, such as Figure 15 As shown, the second puncture channel 32 is further selectively extended from the first end of the second clamping arm 3 to the second end of the second clamping arm 3 and penetrates the second clamping surface 33. This application allows the first puncture channel 22 to pass through the first clamping surface 24 and the second puncture channel 32 to pass through the second clamping surface 33, thereby enabling the puncture needle 4 to pass through the tissue between the first clamping surface 24 and the second clamping surface 33. Under the action of the first clamping surface 24 and the second clamping surface 33, the position of the clamped valve annulus X can be better constrained, not only making the puncture position more accurate but also effectively reducing damage to the valve annulus X during the puncture process.

[0114] This application allows the first puncture channel 22 to pass through the first clamping surface 24 and the second puncture channel 32 to pass through the second clamping surface 33, thereby enabling the puncture needle 4 to pass through the tissue between the first clamping surface 24 and the second clamping surface 33. Under the action of the first clamping surface 24 and the second clamping surface 33, the position of the clamped valve annulus can be better constrained, making the puncture position more accurate and effectively reducing the damage to the valve annulus X caused by the puncture process.

[0115] As some preferred embodiments of this application, the main body arm 1 is further selectively provided with a first clearance region 11 on its side wall. The first clearance region 11 is adapted to the first clamping arm 2. A first connecting position 111 is provided at the proximal end of the first clearance region 11. The first end of the first clamping arm 2 is rotatably connected to the first connecting position 111 via a pivot. The clamping part 21 of the first clamping arm is located at the second end of the first clamping arm. The first clamping arm 2 has a state in which it is located within the first clearance region 11 and a state in which it extends out of the first clearance region 11 after rotation to clamp the valve ring X. In specific implementations, the first clearance region 11 can be matched according to the size of the first clamping arm 2, specifically as follows: Figure 10 and Figure 11As shown, the first clearance area 11 is a clearance groove set on the side wall of the main arm 1. During the use of the valve annulus retraction instrument 10, the position and state of the first clamping arm 2 can be adjusted according to the actual operational needs during the surgery.

[0116] A second clearance region 12 is also provided on the side wall of the main arm 1. The second clearance region 12 is adapted to the second clamping arm 3. A second connecting position 121 is provided at the proximal end of the second clearance region 12. The first end of the second clamping arm 3 is rotatably connected to the second connecting position 121 via a pivot. The clamping part 31 of the second clamping arm is located at the second end of the second clamping arm 3. The second clamping arm 3 has a state in which it is located within the second clearance region 12 and a state in which it extends out of the second clearance region 12 after rotation to clamp the valve ring X. In specific implementation, the second clearance region 12 can be matched according to the size of the second clamping arm 3, specifically as follows: Figure 10 and Figure 11 As shown, the second clearance area 12 is a clearance groove set on the side wall of the main arm 1. During the use of the valve annulus retraction instrument 10, the position and state of the second clamping arm 3 can be adjusted according to the actual operational needs during the surgery.

[0117] As a preferred embodiment of this application, such as Figure 10 and Figure 11 As shown, the first clearance region 11 and the second clearance region 12 are arranged along the extension direction of the main body arm 1, and the first clearance region 11 is located between the far end of the main body arm 1 and the second clearance region 12.

[0118] As some preferred embodiments of this application, such as Figure 9 and Figure 12 As shown, a clearance notch 23 is formed at the first end of the first clamping arm 2 along its length direction. When the first clamping arm 2 and the second clamping arm 3 are in a folded state, at least a portion of the structure of the second clamping arm 3 is located in the clearance notch 23. This arrangement can effectively reduce the length requirement of the main body arm 1, thereby alleviating the problem of increased operational difficulty of the valve annulus retraction device due to the longer main body arm 1. As a preferred embodiment of this application, the width of the second clamping arm 3 can be further selectively made smaller than the width of the first clamping arm 2.

[0119] This application enables the valve annulus retraction device 10 to have a folding function by having the first clamping arm 2 positioned within the first clearance region 11 and extended out of the first clearance region 11 after rotation to clamp the valve annulus X, and the second clamping arm 3 positioned within the second clearance region 12 and extended out of the second clearance region 12 after rotation to clamp the valve annulus X; thereby making the valve annulus retraction device 10 easy to adjust as needed during minimally invasive surgery.

[0120] As some preferred embodiments of this application, the second end of the first clamping arm 2 is further selectively bent toward the second clamping arm 3. Specifically, as follows... Figure 4 , Figure 6 , Figure 12 and Figure 13 As shown, the first clamping arm 2 is bent in a Z-shape, and the first end of the first clamping arm 2 is hinged to the main body arm 1 via a pivot, and the first clamping arm 2 can rotate toward the second clamping arm 3; the second end of the first clamping arm 2 is bent toward the second clamping arm 3. As some preferred embodiments of this application, the second end of the second clamping arm 3 can also be selectively bent toward the first clamping arm 2.

[0121] This application also discloses a method of using a valve annulus retraction device 10, used to operate the valve annulus retraction device 10 as described in any of the foregoing embodiments, control the first clamping arm 2 and the second clamping arm 3 so that the first clamping arm 2 and the second clamping arm 3 are in a clamping state; control the puncture needle 4 of the connecting suture 51 so that the puncture end of the puncture needle 4 passes through the second puncture channel 32 and exits through the first puncture channel 22; connect the traction member 53 to the first clamping arm 2, and pull the suture 51 through the first clamping arm 2.

[0122] To facilitate understanding of the usage of the valve annulus reduction device 10 provided in this application, the following example is taken in the case of mitral valve annulus reduction surgery, in conjunction with the attached... Figures 21 to 30 The following explanation is provided:

[0123] The distal end of the valve annulus constriction device 10 is inserted into the heart Y from the apex position. The first clamping arm 2 and the second clamping arm 3 are controlled to clamp the valve annulus X at a designated position (e.g., Figure 21 As shown), when the clamping position deviates, the clamping position can be adjusted by controlling the first clamping arm 2 and the second clamping arm 3. When the first clamping arm 2 and the second clamping arm 3 clamp the valve ring X at the designated position, the puncture needle 4, which is connected to the suture 51 via the traction member 53, is controlled to pass through the second puncture channel 32 and out of the first puncture channel 22. After the puncture needle 4 passes through the first puncture channel 22, the traction part 531 of the traction member 53 is connected to the first clamping arm 2 (as shown). Figure 22 (As shown); After confirming that the traction part 531 of the traction member 53 is connected to the first clamping arm 2, the limiting structure 52 is disengaged from the limiting structure mounting position 34 (as shown). Figure 23 As shown), further moving one end of the suture 51 with the limiting structure 52 toward the valve ring X (as shown). Figure 24 (As shown) until the limiting structure 52 is connected to the valve ring (as shown) Figure 25 (As shown); further pull suture 51 until the other end of suture 51 is pulled out of the heart Y through the first clamping arm 2; repeat the above process to connect the other suture 51 to the designated position of the valve annulus X (as shown). Figure 26 As shown and Figure 27 (As shown). Next, by pulling the two implanted sutures 51, the valve annulus X is tightened. After adjustment, the sutures 51 are locked by the locking unit 54 (as shown). Figure 28 As shown in the diagram, this achieves the effect of annular retraction (X). In practice, annular retraction can be selectively performed at multiple locations on the annular X to achieve the repair purpose. During the specific surgery, the retraction location of the annular X can be selected according to the actual situation, for example... Figure 29 and Figure 30 Two different lobe-ring X-ring contraction schemes are shown.

[0124] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A valve annulus plication device, comprising: a main body arm, a first clamping arm rotatably connected to the main body arm, and a second clamping arm rotatably connected to the main body arm; the first clamping arm is provided with a first puncture channel, and the second clamping arm is provided with a second puncture channel; a suture; the valve annulus plication device further comprises a puncture needle and a traction member, the puncture needle is connectable to the suture through the traction member, and the traction member has a connection state and a separation state after the puncture needle is punctured through the first puncture channel; when the first clamping arm and the second clamping arm are in a clamping state, the traction member can pull the suture to pass through the second puncture channel and the first puncture channel along with the puncture needle. 2.The valve annulus plication device according to claim 1, wherein: the first puncture channel penetrates through a clamping portion of the first clamping arm along a puncture direction of the puncture needle; the second puncture channel extends from a first end of the second clamping arm to a clamping portion of the second clamping arm, and penetrates through both ends of the second clamping arm; when the first clamping arm and the second clamping arm are in the clamping state, the first puncture channel is opposite to the second puncture channel. 3.The valve annulus plication device according to claim 1, wherein: the suture is provided with a limiting structure for connecting a valve annulus, a first end of the traction member is provided with a traction portion for connecting the first clamping arm, a second end of the traction member is provided with a traction ring for connecting the suture, and the puncture needle is connectable to the traction member through the traction portion; the suture is connected to the traction member through the traction ring, and the traction portion can pass through the first puncture channel along with the puncture needle and be connected to the first clamping arm. 4.The valve annulus plication device according to claim 3, wherein: the puncture needle is a hollow needle, the traction portion is adaptively connectable to the hollow needle, and at least part of the traction portion is located in a puncture end of the puncture needle when the puncture needle and the traction portion are in the connection state; the valve annulus plication device further comprises a pushing member, the pushing member is inserted into the hollow needle from a proximal end, and the pushing member can push the traction portion to separate the traction portion from the puncture needle and connect the traction portion to the first clamping arm. 5.The valve annulus plication device according to claim 4, wherein: a limiting structure installation position is arranged at a position adjacent to the clamping portion of the second clamping arm, the limiting structure is connectable to the limiting structure installation position, and the limiting structure is configured to be disconnected from the limiting structure installation position when the traction member is pulled by the first clamping arm. 6.The valve annulus plication device according to claim 1, wherein: a first end of the first clamping arm is hingedly connected to the main body arm, and a second end of the first clamping arm is arranged to be bent towards the second clamping arm; and / or, ​ The first end of the second clamping arm is hingedly connected to the main arm, and the second end of the second clamping arm is arranged to be bent towards the first clamping arm.

7. The annuloplasty device of claim 1, wherein, The side wall of the main arm is provided with a first accommodation area, and the first clamping arm is matched with the first accommodation area; a first connecting position is arranged at the proximal end of the first accommodation area, the first end of the first clamping arm is hingedly connected to the first connecting position, the clamping part of the first clamping arm is located at the second end of the first clamping arm, and the first clamping arm has a state of being located in the first accommodation area and a state of being extended out of the first accommodation area after being rotated for clamping the annulus.

8. The annuloplasty device of claim 7, wherein, The side wall of the main arm is further provided with a second accommodation area, and the second clamping arm is matched with the second accommodation area; a second connecting position is arranged at the proximal end of the second accommodation area, the first end of the second clamping arm is hingedly connected to the second connecting position, the clamping part of the second clamping arm is located at the second end of the second clamping arm, and the second clamping arm has a state of being located in the second accommodation area and a state of being extended out of the second accommodation area after being rotated for clamping the annulus; The first accommodation area is arranged between the distal end of the main arm and the second accommodation area.

9. The annuloplasty device of any one of claims 1 to 8, wherein, The annuloplasty device further comprises a first control member for controlling the rotation of the first clamping arm; the main arm is provided with a first channel that is in communication with the proximal end of the main arm and the connecting position of the first clamping arm and the main arm, and the first control member is connected to the first clamping arm through the first channel; The annuloplasty device further comprises a second control member for controlling the rotation of the second clamping arm; the main arm is provided with a second channel that is in communication with the proximal end of the main arm and the connecting position of the second clamping arm and the main arm, and the second control member is connected to the second clamping arm through the second channel.

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