CN110742657B

CN110742657B - Mitral valve clamping device and mitral valve surgical system having the same

Info

Publication number: CN110742657B
Application number: CN201910958783.7A
Authority: CN
Inventors: 陈维; 阮成民; 徐亚伟; 赵逸凡; 古锐鹏; 林伟林
Original assignee: Guangdong Pulse Medical Technology Co ltd
Current assignee: Guangdong Pulse Medical Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2025-01-14
Anticipated expiration: 2039-10-10
Also published as: CN110742657A

Abstract

The invention discloses a mitral valve clamping device which comprises a bracket, two hook arms, two guard plate assemblies and a mitral valve surgical system, wherein the bracket is provided with a body, the two hook arms are respectively hinged to the left side and the right side of the body, the two guard plate assemblies are respectively hinged to the left side and the right side of the body, the hook arms are provided with hook thorns capable of hooking a mitral valve, the guard plate assemblies and the hook arms on the same side of the body can clamp mitral valve leaflets together, the positions of each hook arm and each guard plate assembly are independently adjustable, and by the adoption of the mitral valve clamping device, independent control of clamping of the left side and the right side can be realized, and accurate clamping is realized.

Description

Mitral valve clamping device and mitral valve operation system that has it

Technical Field

The invention relates to the field of medical equipment, in particular to a mitral valve clamping device and a mitral valve operation system with the same.

Background

Mitral regurgitation, i.e., poor mitral valve closure of the heart when the heart contracts, causes blood to reversely flow into the left atrium from the left ventricle, is a mitral valve lesion caused by organic or functional changes of mitral valve leaflets, annuli, papillary muscles, chordae tendineae, and the like, and is generally treated by a surgical operation at present, however, the surgical operation is generally performed through chest opening, and has the defects of large wound, slow recovery, high risk, and the like.

Therefore, the prior art provides a closing device for repairing mitral valve leaflets, which clamps two leaflets of a mitral valve by means of metal elastic sheets and connecting rod assemblies symmetrically arranged along two sides of a central axis of a pull rod, wherein the metal elastic sheets are integrally arranged, and two ends of the metal elastic sheets are required to be clamped with the leaflets of the mitral valve at the same time, and the daily valve with incomplete closure has a height difference.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a mitral valve clamping device which can realize independent angle adjustment of clamping parts at two ends of a bracket body.

According to one aspect of the invention, a mitral valve clamping device is provided, which comprises a bracket, two hook arms respectively hinged to the left side and the right side of the bracket, two guard plate assemblies respectively hinged to the left side and the right side of the bracket, the hook arms are provided with a hook thorn capable of hooking a mitral valve, the guard plate assemblies and the hook arms on the same side of the bracket can clamp mitral valve leaflets together, and the positions of each hook arm and each guard plate assembly are independently adjustable.

Further, the mitral valve clamping device further comprises two pull rods which are positioned at the left side and the right side of the inside of the support, the pull rods extend in the up-down direction, and the pull rods can adjust the position of the guard plate assembly.

The pull rod is further provided with a rod body and a driving rod fixedly connected with the lower end of the rod body, the driving rod is hinged with the lower end of the connecting rod, and the upper end of the connecting rod is hinged with the upper end of the guard plate assembly.

Further, the elastic piece is sleeved on the pull rod and used for providing downward acting force for the pull rod.

Further, the pull rod upper end is provided with second threading portion, and second threading portion is used for wearing to establish the operating wire.

Further, a plurality of thorns are distributed on the hook arm along the length direction.

Further, the hook arm is provided with first threading portion along the one end that hook arm and support pin joint were kept away from to length direction, and first threading portion is used for wearing to establish the operating wire.

Further, the guard plate assembly is located at the periphery of the hook arm.

Further, the support comprises a body and a bottom plate, the bottom plate is located below the body, and the bottom plate is detachably connected with the body.

Further, the upper end of the bracket is provided with a connecting part, and the connecting part is used for butting the central control system.

According to another aspect of the present invention, there is also provided a mitral valve surgical system comprising the mitral valve clamping device described above, and further comprising a main control system and a plurality of operating wires, the main control system being connected to the support, the operating wires being used to adjust the position of the hook arm and/or the guard plate assembly.

The angle of the hook arm and the guard plate assembly at one side of the bracket can be adjusted to clamp the valve leaflet at one side of the mitral valve, and then the angle of the hook arm and the guard plate assembly at the other side can be adjusted to clamp the valve leaflet at the other side of the mitral valve, so that the accurate adjustment of the clamping device is realized through independent control at the left side and the right side, and the aim of accurate clamping is achieved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded view of a mitral valve clamping device according to an embodiment of the present invention;

FIG. 2 is a side view of a mitral valve clamping device according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view of the mitral valve clamp device of FIG. 2 in the expanded state, taken along the direction A-A;

The above figures contain the following reference numerals:

Reference numerals	Name of the name
		1	Support frame
11	Body
		12	Bottom plate
13	Connecting part
		2	Hook arm
21	Hook thorn
		22	First threading part
4	Guard board assembly
		6	Connecting rod
8	Pull rod
		81	Rod body
82	Second threading part
		83	Driving rod
84	Elastic piece

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1-3, a mitral valve clamping device is characterized by comprising a bracket 1, two hook arms 2 respectively hinged to the left side and the right side of the bracket 1, two guard plate assemblies 4 respectively hinged to the left side and the right side of the bracket 1, the hook arms 2 are provided with a hook thorn 21 capable of hooking a mitral valve, the guard plate assemblies 4 and the hook arms 2 positioned on the same side of the bracket 1 can clamp mitral valve leaflets together, and the positions of the single hook arm 2 and the single guard plate assembly 4 are independently adjustable.

The mitral valve clamping device is applied, as the left side and the right side of the bracket 1 are hinged with the hook arm 2 and the guard plate component 4, when the mitral valve clamping device is used, the angle of the hook arm 2 and the guard plate component 4 on one side of the bracket 1 can be adjusted to clamp the valve leaflet on one side of the mitral valve, and then the angle of the hook arm 2 and the guard plate component 4 on the other side can be adjusted to clamp the valve leaflet on the other side of the mitral valve, and the accurate adjustment of the clamping device is realized through independent control on the left side and the right side, so that the aim of accurate clamping is achieved.

Here, independently adjustable means that each hook arm 2 and each fender assembly 4 can be independently rotated about its hinge point with the bracket 1 and adjusted to a designated position, without being affected by each other.

In particular, the guard and hook arm 2 may be hinged to the bracket 1 in a number of ways, for example by means of a latch lever 8 or a pin.

The guard plate assembly 4 may be made of a material with good biological property, so as to prevent the mitral valve from further lesion after clamping, such as nickel-titanium alloy, cobalt-chromium alloy, titanium alloy, nickel-based alloy, and the like.

Further, in order to conveniently adjust the positions of the guard plate assemblies 4 on both sides without increasing the radial size of the mitral valve clamping device, two pull rods 8 may be disposed on both sides of the inside of the bracket 1, and the pull rods 8 extend in the up-down direction, wherein the pull rod 8 on the left side of the inside of the bracket 1 may be used to adjust the position of the guard plate assembly 4 on the left side, and the pull rod 8 on the right side of the inside of the bracket 1 may be used to adjust the position of the guard plate assembly 4 on the right side.

Specifically, the pull rod 8 is provided with a rod body 81 and a driving rod 83 fixedly connected with the lower end of the rod body 81, the driving rod 83 is hinged with the lower end of the connecting rod 6, the upper end of the connecting rod 6 is hinged with 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 support 1.

As shown in fig. 1 and 2, in order to enable the left and right guard plate assemblies 4 to automatically clamp to a radial minimum size under the condition that the pull rod 8 is not pulled, the mitral valve clamping device is conveniently implanted into a human body, an elastic piece 84 is sleeved on the pull rod 8, the elastic piece 84 is used for providing downward acting force for the pull rod 8, and when the pull rod 8 moves downwards to a maximum position, the guard plate assemblies 4 on the left and right sides clamp to the radial minimum size.

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

In order to facilitate the adjustment of the angle of the guard plate after the mitral valve clamping device is implanted into a human body, the guard plate is close to the hook arm 2 and the mitral valve She Gage is arranged, a second threading part 82 can be arranged on the pull rod 8, the second threading part 82 is used for threading an operation wire, after the mitral valve clamping device is implanted into the human body, the guard plate assembly 4 can be opened by pulling the operation wire, and further under the action of the elastic piece 84, the guard plate assembly 4 can be folded towards the axis of the bracket 1 by loosening the operation wire.

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

In order to facilitate the adjustment of the position of the hook arm 2 after the mitral valve clamping device is implanted into a human body, so that the hook arm 2 can hook the mitral valve leaflet, a first threading part 22 can be arranged at one end of the hook arm 2 away from the hinge point of the hook arm 2 and the bracket 1 along the length direction, the first threading part 22 is used for threading an operation wire, before the mitral valve clamping device is implanted into the human body, the operation wire is tensioned to tighten the hook arm 2, and after the mitral valve clamping device is implanted, the operation wire is loosened, so that the hook arm 2 rotates and hooks the mitral valve leaflet.

In order to make the mechanism of the mitral valve clamping device as compact as possible, a guard assembly 4 is provided at the periphery of the hook arm 2.

For easy installation of the pull rod 8, the bracket 1 comprises a body 11 and a bottom plate 12, the bottom plate 12 is positioned below the body 11, and the bottom plate 12 is detachably connected with the body 11.

In order to facilitate the docking of the mitral valve clamping device with the main control system, a connecting part 13 may be provided at the upper end of the bracket 1, the connecting part 13 being used for docking the central control system.

According to another aspect of the present embodiment, there is provided a mitral valve surgical system, including the mitral valve clamping device described above, and further including a main control system and a plurality of operation wires, the main control system being connected to the bracket 1, the operation wires being used to adjust the position of the hook arm 2 and/or the guard plate assembly 4.

The operation procedure of the mitral valve operation system of the embodiment is that the connecting part 13 is fixed with a central control system of an operation device, an operation wire is penetrated in the first threading part 22 and the second threading part 82, then the mitral valve clamping device is implanted into a human body through the central control system, when the mitral valve operation system is implanted near a mitral valve, the operation wire is pulled to pull the pull rod 8 so as to open the guard plate assembly 4, when the mitral valve leaflet is positioned between the hook arm 2 and the guard plate, the operation wire is loosened so that the hook arm 2 hooks the mitral valve leaflet, then the operation wire is loosened so that the guard plate assembly 4 is close to the hook arm 2 and the mitral valve She Gage is loosened, and when the mitral valve clamping device finishes the mitral valve She Gage, the central control system and the operation wire are removed, so that the operation is completed.

The embodiments of the present invention have been described in detail 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 of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. A mitral valve clamping device, comprising:

A bracket (1);

two hook arms (2) are respectively hinged to the left side and the right side of the bracket (1);

The two guard plate assemblies (4) are respectively hinged to the left side and the right side of the bracket (1);

The hook arms (2) are provided with a hook thorn (21) capable of hooking the mitral valve leaflet, the guard plate assemblies (4) positioned on the same side of the bracket (1) and the hook arms (2) can clamp the mitral valve leaflet together, and the positions of each hook arm (2) and each guard plate assembly (4) are independently adjustable;

two pull rods (8) positioned at the left side and the right side of the inside of the support (1), wherein the pull rods (8) extend in the up-down direction, and the positions of the guard plate assemblies (4) can be adjusted by the pull rods (8);

the pull rod (8) is provided with a rod body (81) and a driving rod (83) fixedly connected with the lower end of the rod body (81), the driving rod (83) is hinged with the lower end of the connecting rod (6), and the upper end of the connecting rod (6) is hinged with the upper end of the guard plate assembly (4);

an elastic piece (84) is sleeved on the pull rod (8), and the elastic piece (84) is used for providing downward acting force for the pull rod (8) so that the two guard plate assemblies (4) are automatically clasped to the radial minimum size under the condition that the pull rod (8) is not pulled;

The support (1) comprises a body (11) and a bottom plate (12), wherein the bottom plate (12) is positioned below the body (11), and the bottom plate (12) is detachably connected with the body (11).

2. Mitral valve clamping device as in claim 1, characterized in that the pull rod (8) upper end is provided with second threading portion (82), and the second threading portion (82) is used for wearing the operating wire.

3. Mitral valve clamping device as in claim 1, characterized in that the hooking arms (2) are provided with a plurality of hooking thorns (21) distributed along the length.

4. Mitral valve clamping device according to claim 1, characterized in that the hook arm (2) is provided with first threading portion (22) along the length direction, far away from the one end of hook arm (2) with support (1) pin joint, first threading portion (22) is used for wearing to establish the operating wire.

5. Mitral valve clamping device as in claim 1, characterized in that the apron assembly (4) is located at the periphery of the hook arm (2).

6. Mitral valve clamping device as in claim 1, characterized in that the bracket (1) is provided with a connection (13) at the upper end, which connection (13) is used for docking a central control system.

7. A mitral valve surgical system, comprising the mitral valve clamping device of any one of claims 1-6, further comprising a main control system connected to the bracket (1) and a plurality of operating wires for adjusting the position of the hook arm (2) and/or the apron assembly (4).