CN-121987387-A - Valve replacement system and valve replacement device

CN121987387ACN 121987387 ACN121987387 ACN 121987387ACN-121987387-A

Abstract

The application discloses a valve replacement system and a valve replacement device. The valve replacement device comprises a self-expansion bracket, a winding wire and a locking device, wherein the self-expansion bracket comprises a grid pipe framework and a skirt framework, the grid pipe framework is of an integrated structure, the skirt framework is arranged around the grid pipe framework, the tail end of the skirt framework is connected to the middle of the grid pipe framework, the skirt framework is in an outward expansion shape, the inflow end of the grid pipe framework is located in the surrounding of the skirt framework, a plurality of stop pieces are arranged at the outflow end of the grid pipe framework along the circumferential direction, the winding wire is used for winding the periphery of the grid pipe framework and located between the skirt framework and the stop pieces, and the skirt framework and the stop pieces are used for locking the winding wire in a matched mode. Through the mode, the valve replacement device provided by the application can be used for simply and efficiently locking the winding wire by utilizing the skirt skeleton which moves downwards to be matched with a plurality of stop pieces through improving the structural design of the valve replacement device, so that the valve replacement device is efficiently locked at a treatment position.

Inventors

LI ZHIWEI
ZHANG XIAOWU
DONG WEN

Assignees

唯柯启源(无锡)医疗科技有限公司
武汉唯柯医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250928

Claims (10)

1. A valve replacement device, the valve replacement device comprising: The self-expansion bracket comprises a grid pipe framework and a skirt framework, wherein the grid pipe framework is of an integrated structure, the skirt framework is arranged around the grid pipe framework, the tail end of the skirt framework is connected to the middle of the grid pipe framework, the skirt framework is in an outward expansion shape, the inflow end of the grid pipe framework is positioned in the surrounding of the skirt framework, and a plurality of stop pieces are arranged at the outflow end of the grid pipe framework along the circumferential direction; and the winding wires are used for winding the periphery of the grid pipe framework and are positioned between the skirt framework and the plurality of stop pieces, and the skirt framework and the plurality of stop pieces are used for locking the winding wires in a matching way.
2. The valve replacement device of claim 1, wherein both ends of the stopper are connected to an outflow end of the lattice tube skeleton, and the stopper is expanded outward of the lattice tube skeleton to clamp one end of the wrapping wire in cooperation with the skirt skeleton.
3. The valve replacement device of claim 2, wherein the outflow end is provided with a plurality of first mesh notches in one-to-one correspondence with the plurality of stops, the first mesh notches for receiving the stops when the self-expanding stent is in a contracted state.
4. The valve replacement device of claim 3, wherein the stopper comprises two first mesh ribs connected, one end of each of the two first mesh ribs being connected, the other end of each of the two first mesh ribs being connected to two adjacent edge mesh points on the outflow end, the length of each of the first mesh ribs being no longer than the length of the second mesh rib of the mesh tube skeleton.
5. The valve replacement device of claim 1 further comprising a peripheral skirt wrapped outside the lattice tube framework and the skirt framework, the peripheral skirt also wrapping the stopper, the peripheral skirt isolating the wrapping wires and the self-expanding stent.
6. The valve replacement device of claim 1, wherein the inflow end is provided with a plurality of spaced apart second mesh indentations; The skirt skeleton comprises a plurality of first skirt grids, the first skirt grids are arranged in one-to-one correspondence with the second grid gaps, the first skirt grids are connected to grid points at the bottoms of the second grid gaps through first ribs, and the second grid gaps are used for accommodating at least part of the first skirt grids when the self-expansion support is in a contracted state.
7. The valve replacement device of claim 6, wherein the skirt framework further comprises a plurality of second skirt grids, the plurality of second skirt grids and the plurality of first skirt grids are arranged in an alternating manner, adjacent second skirt grids and first skirt grids are connected through second ribs, the second skirt grids are not connected with the grid tube framework, and the second skirt grids are staggered with grids on the grid tube framework when the self-expanding stent is in a contracted state and are partially accommodated in an opening area between two adjacent edge grids on the grid tube framework.
8. The valve replacement device of claim 7, wherein the second skirt mesh has a width along the circumference of the mesh tube skeleton that is less than the width of the first skirt mesh in the circumference.
9. The valve replacement device of claim 6 further comprising a top skirt connecting the inflow end, the plurality of second skirt meshes, and the plurality of first skirt meshes; the valve replacement device further comprises an inner skirt connected to the inside of the lattice tube framework, and a plurality of valve leaflets connected to the inner side of the inner skirt.
10. A valve replacement system comprising a delivery device for delivering the valve replacement device to a medical site and a valve replacement device according to any one of claims 1 to 9.

Description

Valve replacement system and valve replacement device Technical Field The application relates to the technical field of valve replacement devices, in particular to a valve replacement system and a valve replacement device. Background Cardiovascular disease includes arteriosclerosis, myocardial infarction, stroke, arrhythmia and valve disease, among which valve disease including aortic valve, pulmonary valve, mitral valve and tricuspid valve lesions is one of the important causes of heart attack such as heart failure, stroke, etc., and mitral valve lesions are the most common one of all valve diseases. Transcatheter mitral valve intervention (TMV) refers to an emerging technique for treating a mitral valve in need of treatment by means of transcatheter intervention, which is divided into transcatheter mitral valve repair (TMVr) and Transcatheter Mitral Valve Replacement (TMVR), both of which are mainly applied to treating patients suffering from mitral regurgitation with moderate to severe or above (MR. Gtoreq.3+), high risk of surgery or failure to do surgery. Compared with the traditional treatment mode, the therapy has the advantages of small wound, quick postoperative recovery and the like, but a great deal of MR treatment demands are not met in consideration of the fact that about half of MR patients are not subjected to the operation due to the excessive operation risk caused by the factors of heart dysfunction, excessive complications, advanced age and the like. The existing valve replacement device for treating the mitral valve is often complicated in positioning structure at the mitral valve, and needs to be locked at the chordae of the mitral valve by adopting an extremely complicated structure, so that the more complicated structure causes more difficulty in operation, and meanwhile, the chordae of the mitral valve and the native valve are also easily damaged. Disclosure of Invention The application mainly provides a valve replacement system and a valve replacement device, which are used for solving the problem that the existing valve replacement device is not concise and efficient when being positioned in an operation. In order to solve the technical problems, the application adopts a technical scheme that a valve replacement device is provided. The valve replacement device comprises a self-expansion bracket, a winding wire and a plurality of stopping pieces, wherein the self-expansion bracket comprises a grid pipe framework and a skirt framework, the grid pipe framework is of an integrated structure, the skirt framework is arranged around the grid pipe framework, the tail end of the skirt framework is connected to the middle of the grid pipe framework, the skirt framework is in an outward expansion shape, the inflow end of the grid pipe framework is positioned in the surrounding of the skirt framework, the outflow end of the grid pipe framework is provided with the plurality of stopping pieces along the circumferential direction, the winding wire is used for winding the periphery of the grid pipe framework and is positioned between the skirt framework and the plurality of stopping pieces, and the skirt framework and the plurality of stopping pieces are used for being matched and locked with the winding wire. In some embodiments, two ends of the stop piece are connected to the outflow end of the grid tube framework, and the stop piece is expanded outwards of the grid tube framework so as to match with the skirt framework to clamp one end of the winding wire. In some embodiments, the outflow end is provided with a plurality of first grid notches in one-to-one correspondence with the plurality of stoppers, the first grid notches being for receiving the stoppers when the self-expanding stent is in a contracted state. In some embodiments, the stop member includes two first grid ribs connected, one ends of the two first grid ribs are connected, the other ends of the two first grid ribs are respectively connected with two adjacent edge grid points on the outflow end, and the length of the first grid rib is not longer than that of the second grid rib of the grid pipe framework. In some embodiments, the valve replacement device further comprises a peripheral skirt wrapped outside the lattice tube framework and the skirt framework, the peripheral skirt also wrapping the stopper, the peripheral skirt isolating the wrapping wire and the self-expanding stent. In some embodiments, the inflow end is provided with a plurality of second grid indentations spaced apart; The skirt skeleton comprises a plurality of first skirt grids, the first skirt grids are arranged in one-to-one correspondence with the second grid gaps, the first skirt grids are connected to grid points at the bottoms of the second grid gaps through first ribs, and the second grid gaps are used for accommodating at least part of the first skirt grids when the self-expansion support is in a contracted state. In some embodiments, the skirt skeleton