Mitral valve clamping device and mitral valve surgical system having the same

Abstract

The present invention discloses a mitral valve clamping device, comprising: a bracket, having a main body; two hook arms, respectively hinged on the left and right sides of the main body; two guard plate assemblies, respectively hinged on the left and right sides of the main body; the hook arm has a hook barb that can hook the mitral valve, the guard plate assembly and the hook arm located on the same side of the main body can clamp the mitral valve leaflet together, and the position of each hook arm and each guard plate assembly is independently adjustable; using the mitral valve clamping device of the present invention, independent control of the clamping of the left and right sides can be achieved, and precise clamping can be achieved. The present invention also discloses a mitral valve surgical system.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a mitral valve clamping device and a mitral valve surgical system having the same. Background Art

[0002] Mitral regurgitation is when the mitral valve of the heart does not close tightly during heart contraction, causing blood to flow backwards from the left ventricle into the left atrium. It is a mitral valve disease caused by organic or functional changes in the mitral valve leaflets, valve ring, papillary muscles, chordae tendineae, etc. Currently, the treatment of mitral regurgitation is generally through surgical methods. However, surgical operations generally need to be performed through thoracotomy, which has disadvantages such as large trauma, slow recovery and high risk.

[0003] To this end, the prior art proposes a closing device for repairing the mitral valve leaflets, which clamps the two leaflets of the mitral valve by means of metal springs and connecting rod assemblies symmetrically arranged on both sides of the central axis of the pull rod; since the metal springs are arranged in one piece, both ends thereof must clamp the leaflets of the mitral valve at the same time, and there is a height difference in the valve that is not fully closed in daily life. If they are clamped at the same time, there will inevitably be a large gap, and forcibly clamping the leaflets may cause the leaflets to overlap, resulting in secondary or fatal damage to the valve. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a mitral valve clamping device, which can achieve independent angle adjustment of the clamping parts at both ends of the stent body.

[0005] According to one aspect of the present invention, a mitral valve clamping device is provided, comprising: a bracket; two hook arms, respectively hinged on the left and right sides of the bracket; two guard plate assemblies, respectively hinged on the left and right sides of the bracket; the hook arm has a hook barb that can hook the mitral valve, the guard plate assembly and the hook arm located on the same side of the bracket can clamp the mitral valve leaflet together, and the position of each hook arm and each guard plate assembly is independently adjustable.

[0006] Furthermore, the mitral valve clamping device also includes two pull rods located on the left and right sides of the inside of the stent, the pull rods extend in the up and down directions, and the pull rods can adjust the position of the guard plate assembly.

[0007] Furthermore, the pull rod comprises a rod body and a driving rod fixedly connected to the lower end of the rod body; the driving rod is hinged to the lower end of the connecting rod, and the upper end of the connecting rod is hinged to the upper end of the guard plate assembly.

[0008] Furthermore, an elastic member is sleeved on the pull rod, and the elastic member is used to provide a downward force for the pull rod.

[0009] Furthermore, a second threading portion is provided at the upper end of the pull rod, and the second threading portion is used for threading the operating wire.

[0010] Furthermore, a plurality of hook barbs are distributed along the length direction on the hook arm.

[0011] Furthermore, a first threading portion is provided at one end of the hook arm away from the hinge point between the hook arm and the bracket along the length direction, and the first threading portion is used for threading the operating wire.

[0012] Furthermore, the guard plate assembly is located on the periphery of the hook arm.

[0013] Furthermore, the bracket includes a body and a bottom plate, wherein the bottom plate is located below the body, and the bottom plate is detachably connected to the body.

[0014] Furthermore, a connecting portion is provided at the upper end of the bracket, and the connecting portion is used for docking with the central control system.

[0015] According to another aspect of the present invention, a mitral valve surgical system is provided, comprising the above-mentioned mitral valve clamping device, and also comprising a main control system and a plurality of operating wires, wherein the main control system is connected to the bracket, and the operating wires are used to adjust the position of the hook arm and / or guard plate assembly.

[0016] The mitral valve clamping device of the present invention is applied; since hook arms and guard plate assemblies are hinged on the left and right sides of the bracket body, when in use, the angle of the hook arm and guard plate assembly on one side of the bracket can be adjusted first to clamp the leaflet on one side of the mitral valve, and then the angle of the hook arm and guard plate assembly on the other side can be adjusted to clamp the leaflet on the other side of the mitral valve. Through independent control of the left and right sides, precise adjustment of the clamping device can be achieved, thereby achieving the purpose of precise clamping.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 An exploded view of a mitral valve clamping device according to an embodiment of the present invention;

[0020] Figure 2 is a side view of a mitral valve clamping device according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Sectional view in the AA direction;

[0022] Figure 4 for Figure 2 A cross-sectional view of the mitral valve clipping device in the deployed state in the middle AA direction;

[0023] The above drawings contain the following reference numerals:

[0024] Label name 1 Bracket 11 Ontology 12 Base Plate 13 Connection 2 Hook arm 21 Hook 22 First threading department 4 Guard plate components 6 link 8 Tie rod 81 Rod body 82 Second threading unit 83 Drive rod 84 Elastic parts DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0029] Reference Figure 1-Figure 3 A mitral valve clamping device, characterized in that it includes: a bracket 1; two hook arms 2, which are respectively hinged on the left and right sides of the bracket 1; two guard plate assemblies 4, which are respectively hinged on the left and right sides of the bracket 1; the hook arm 2 has a hook barb 21 that can hook the mitral valve, and the guard plate assembly 4 and the hook arm 2 located on the same side of the bracket 1 can clamp the mitral valve leaflet together, and the positions of a single hook arm 2 and a single guard plate assembly 4 are independently adjustable.

[0030] The mitral valve clamping device of this embodiment is applied; since the left and right sides of the bracket 1 are hinged with hook arms 2 and guard plate assemblies 4, when in use, the angles of the hook arms 2 and guard plate assemblies 4 on one side of the bracket 1 can be adjusted first to clamp the leaflets on one side of the mitral valve, and then the angles of the hook arms 2 and guard plate assemblies 4 on the other side can be adjusted to clamp the leaflets on the other side of the mitral valve. Through independent control of the left and right sides, precise adjustment of the clamping device can be achieved, thereby achieving the purpose of precise clamping.

[0031] Here, independently adjustable means that each hook arm 2 and each guard plate assembly 4 can be independently rotated around the hinge point with the bracket 1 and adjusted to a specified position without being affected by each other.

[0032] Specifically, the guard plate and the hook arm 2 can be hinged to the bracket 1 in a variety of ways, such as being connected by a latch rod 8 or a pin.

[0033] The guard plate assembly 4 can be made of a material with good biological properties to prevent further mitral valve pathology after clamping; for example, nickel-titanium alloy, cobalt-chromium alloy, titanium alloy, nickel-based alloy, etc.

[0034] Furthermore, in order to facilitate the adjustment of the positions of the guard plate assemblies 4 on both sides without increasing the radial dimensions of the mitral valve clamping device, two pull rods 8 can be set on the left and right sides of the inside of the stent 1. The pull rods 8 extend in the up and down directions, and the pull rod 8 located on the left side of the inside of the stent 1 can be used to adjust the position of the guard plate assembly 4 on the left side, and the pull rod 8 located on the right side of the inside of the stent 1 can be used to adjust the position of the guard plate assembly 4 on the right side.

[0035] Specifically, the pull rod 8 has a rod body 81 and a driving rod 83 fixedly connected to the lower end of the rod body 81; the driving rod 83 is hinged to the lower end of the connecting rod 6, and the upper end of the connecting rod 6 is hinged to the upper end of the guard plate assembly 4; when the pull rod 8 is pulled up and down, the driving rod 83 drives the connecting rod 6 to move, and the connecting rod 6 drives the upper end of the guard plate assembly 4 to move, so that the guard plate assembly 4 rotates relative to the bracket 1.

[0036] like Figure 1 , Figure 2 As shown, in order to enable the left and right side guard plate assemblies 4 to automatically embrace to the minimum radial size when the pull rod 8 is not pulled, so as to facilitate the implantation of the mitral valve clamping device into the human body, an elastic member 84 can be sleeved on the pull rod 8, and the elastic member 84 is used to provide a downward force for the pull rod 8; when the pull rod 8 moves downward to the maximum position, the left and right side guard plate assemblies 4 are embraced to the minimum radial size.

[0037] The elastic member 84 may be a compression spring, and two ends of the compression spring are respectively connected to the lower end of the pull rod 8 and the bracket 1 .

[0038] In order to facilitate the adjustment of the angle of the guard plate after the mitral valve clamping device is implanted in the human body, so that the guard plate is close to the hook arm 2 and clamps the mitral valve leaflet; a second threading portion 82 can be set on the pull rod 8, and the second threading portion 82 is used to thread an operating line; after the mitral valve clamping device is implanted in the human body, the guard plate assembly 4 can be opened by pulling the operating line; further, under the action of the elastic member 84, the guard plate assembly 4 can be closed toward the axis of the bracket 1 by loosening the operating line.

[0039] like Figure 1-Figure 3As shown, in order to enable the hook arm 2 to hook the mitral valve leaflet more firmly, a plurality of hook barbs 21 may be provided in the length direction of the hook arm 2 .

[0040] In order to facilitate adjustment of the position of the hook arm 2 after the mitral valve clamping device is implanted in the human body so that the hook arm 2 can hook the mitral valve leaflet, a first threading portion 22 can be provided at one end of the hook arm 2 away from the hinge point between the hook arm 2 and the stent 1 in the length direction, and the first threading portion 22 is used for threading an operating line; before the mitral valve clamping device is implanted in the human body, the operating line is first tightened to tighten the hook arm 2, and after implantation, the operating line is loosened to allow the hook arm 2 to rotate and hook the mitral valve leaflet.

[0041] In order to make the structure of the mitral valve clamping device as compact as possible, the guard plate assembly 4 is arranged on the periphery of the hook arm 2.

[0042] In order to facilitate the installation of the pull rod 8 , the bracket 1 includes a body 11 and a bottom plate 12 . The bottom plate 12 is located below the body 11 , and the bottom plate 12 is detachably connected to the body 11 .

[0043] In order to facilitate the docking of the mitral valve clamping device with the main control system, a connecting portion 13 may be provided at the upper end of the stent 1, and the connecting portion 13 is used for docking with the central control system.

[0044] According to another aspect of this embodiment, a mitral valve surgical system is provided, comprising the above-mentioned mitral valve clamping device, and also comprising a main control system and a plurality of operating wires, wherein the main control system is connected to the bracket 1, and the operating wires are used to adjust the position of the hook arm 2 and / or the guard plate assembly 4.

[0045] The surgical procedure of the mitral valve surgical system of this embodiment is as follows: first, the connecting part 13 is fixed to the central control system of the surgical device, and an operating line is inserted into the first threading part 22 and the second threading part 82; then, the mitral valve clamping device is implanted into the human body through the central control system; when the mitral valve surgical system is implanted near the mitral valve, the pull rod 8 is pulled by pulling the operating line to open the guard plate assembly 4, and when the mitral valve leaflet is located between the hook arm 2 and the guard plate, the operating line is released so that the hook arm 2 hooks the mitral valve leaflet, and then the operating line is released so that the guard plate assembly 4 and the hook arm 2 are brought together and clamp the mitral valve leaflet; when the mitral valve clamping device has completed clamping the mitral valve leaflet, the central control system and the operating line are removed to complete the operation.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A mitral valve clamping device, characterized in that: include: Bracket (1); Two hook arms (2) are respectively hinged to the left and right sides of the bracket (1); Two guard plate assemblies (4) are respectively hinged to the left and right sides of the bracket (1); The hook arm (2) has a hook barb (21) capable of hooking the mitral valve leaflet, and the guard plate assembly (4) and the hook arm (2) located on the same side of the bracket (1) can clamp the mitral valve leaflet together, and the position of each hook arm (2) and each guard plate assembly (4) is independently adjustable; Two pull rods (8) located on the left and right sides of the bracket (1), the pull rods (8) extending in the up-down direction, and the pull rods (8) are capable of adjusting the position of the guard plate assembly (4); The pull rod (8) comprises a rod body (81) and a driving rod (83) fixedly connected to the lower end of the rod body (81); the driving rod (83) is hinged to the lower end of the connecting rod (6), and the upper end of the connecting rod (6) is hinged to the upper end of the guard plate assembly (4); An elastic member (84) is sleeved on the pull rod (8), and the elastic member (84) is used to provide a downward force for the pull rod (8), so that the two guard plate assemblies (4) automatically embrace to a minimum radial dimension when the pull rod (8) is not pulled; The bracket (1) comprises a main body (11) and a bottom plate (12), wherein the bottom plate (12) is located below the main body (11), and the bottom plate (12) is detachably connected to the main body (11).

2. The mitral valve clamping device according to claim 1, characterized in that: A second threading portion (82) is provided at the upper end of the pull rod (8), and the second threading portion (82) is used for threading an operating wire.

3. The mitral valve clamping device according to claim 1, characterized in that: A plurality of hook barbs (21) are distributed on the hook arm (2) along the length direction.

4. The mitral valve clamping device according to claim 1, characterized in that: A first threading portion (22) is provided at one end of the hook arm (2) away from the hinge point between the hook arm (2) and the bracket (1) in the length direction, and the first threading portion (22) is used for threading an operating wire.

5. The mitral valve clamping device according to claim 1, characterized in that: The guard plate assembly (4) is located on the periphery of the hook arm (2).

6. The mitral valve clamping device according to claim 1, characterized in that: The upper end of the bracket (1) is provided with a connecting portion (13), and the connecting portion (13) is used for docking with a central control system.

7. A mitral valve surgery system, characterized in that: The mitral valve clamping device comprises the mitral valve clamping device according to any one of claims 1 to 6, and further comprises a main control system and a plurality of operating wires, wherein the main control system is connected to the support (1), and the operating wires are used to adjust the position of the hook arm (2) and / or the guard plate assembly (4).

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