Transcatheter interventional artificial valve

A catheter intervention and valve technology, which is applied in catheters, heart valves, balloon catheters, etc., can solve the problems of affecting valve performance, balloon rupture, and insufficient regurgitation efficacy, so as to improve safety, reliability and service life. Small paravalvular leakage, the effect of preventing regurgitation

Pending Publication Date: 2020-01-21
SHANGHAI NEWMED MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing ball-expandable valve, there may be a risk of balloon rupture during the process of valve compression and expansion, thereby affecting the performance of the valve; moreover, the ball-expandable stent is made of cobalt-chromium alloy, and the stent is There is no memory rebound performance at the valve annulus for stretch release. Once the release position of the stent is inaccurate or fails, it cannot be withdrawn for a second release. Only valve-in-valve can be considered to make up for it.
In addition, the existing aortic valves are mainly used to treat valvular stenosis caused by calcification, and the curative effect on regurgitation of valve paravalvular leakage is not obvious enough

Method used

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  • Transcatheter interventional artificial valve
  • Transcatheter interventional artificial valve
  • Transcatheter interventional artificial valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 It is a structural diagram of the transcatheter interventional artificial valve provided in this embodiment; figure 2 It is a structural diagram of a stent and a skirt frame in the transcatheter interventional artificial valve provided in this embodiment; image 3 It is a schematic diagram of the transcatheter interventional artificial valve implanted in the left ventricular outflow tract provided in this embodiment.

[0034] Such as Figure 1-Figure 3 As shown, the present embodiment provides a transcatheter interventional artificial valve, including a stent 1, a sealing membrane 2, a tissue leaflet 3, a skirt frame 4 and an outer skirt 5, wherein the stent 1 is capable of contracting radially and automatically The ring structure is expanded; the sealing membrane 2 is arranged on the inner surface of the stent 1, and the sealing membrane 2 is sutured and connected with the stent 1; The outer edge of the leaflet 3 is sutured to the inner surface of the seal...

Embodiment 2

[0043] This embodiment discloses a transcatheter interventional artificial valve, which is basically the same in structure as that in Embodiment 1, the difference being that the arrangement of the skirt frame 4 is different.

[0044] Figure 4 It is a structural diagram of the stent and the skirt frame in the transcatheter interventional artificial valve provided in this embodiment. Such as Figure 4 As shown, the skirt frame 4 is formed by turning down the tops of successively spaced hexagonal grids in the third grid group 13, that is, the two upper oblique bars of the hexagonal grids are turned down to As a skirt rack4. Similar to Embodiment 1, the skirt frame 4 is also processed by heat setting after the bracket 1 is cut out; after folding, the angle between the skirt frame 4 and the outer surface of the bracket 1 10° to 50°, preferably 25° to 35°. This embodiment uses spaced hexagonal grids to fold down to form the skirt frame 4, which can achieve the same effect as th...

Embodiment 3

[0047] This embodiment discloses a transcatheter interventional artificial valve, which has basically the same structure as that in Embodiment 2, the difference being that a waist drum frame 8 is added in this embodiment.

[0048] Figure 5 It is a structural diagram of the transcatheter interventional artificial valve provided in this embodiment; Figure 6 It is a structural diagram of the stent, the skirt frame and the waist drum frame in the transcatheter interventional artificial valve provided in this embodiment; Figure 7 It is a top view of the transcatheter interventional artificial valve provided in this embodiment. Such as Figure 5-Figure 7 As shown, the stent 1 of this embodiment is also provided with a waist drum frame 8 for fixing the artificial valve on the calcified original valve leaflet. Preferably, the waist drum stand 8 is V-shaped, and its two upper ends are respectively connected to the upper slanting bars of the hexagonal grid in the second grid group...

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Abstract

The invention relates to the technical field of medical instruments, and discloses a transcatheter interventional artificial valve. The artificial valve comprises a stent, a sealing membrane, a tissueleaflet, a skirt pocket frame and an outer skirt pocket, wherein the stent is of an annular structure capable of expanding and contracting in a radial direction; the sealing membrane is arranged on an inner surface of the stent; the tissue leaflet is arranged inside the stent, and an outer edge of the tissue leaflet is sewn on an inner surface of the sealing membrane; the skirt pocket frame is arranged on an outer side of the stent in a protruding mode; the outer skirt pocket is arranged on an outer surface of the stent, an upper end of the outer skirt pocket is sewn with the stent, a lower end of the outer skirt pocket is sewn with the skirt pocket frame, and the outer skirt pocket can be unfolded along with the skirt pocket frame in a valve releasing process. The artificial valve can effectively reduce valve perivalvular leakage and prevent backflow.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a transcatheter intervention type artificial valve. Background technique [0002] The heart has four valves, the valve between the left atrium and the left ventricle is the mitral valve, the valve between the right atrium and the right ventricle is the tricuspid valve, the valve between the aorta and the left ventricle is the aortic valve, and the valve between the pulmonary artery and the right ventricle The valve is the pulmonary valve. Normal valves maintain a one-way flow of blood by opening and closing according to the pressure difference on each side, ensuring that blood is pumped out of the chambers and not backed up. Many kinds of diseases, such as rheumatic heart disease and endocarditis, cause valvular lesions to impair the function of the valve. Among them, stenosis and regurgitation are common valvular diseases. Stenosis is caused by a valve that cannot open...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/24A61F2/2418A61F2/2427A61F2/2433
Inventor 虞奇峰冯志华
Owner SHANGHAI NEWMED MEDICAL CO LTD
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