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Involvement type prosthetic heart valve stent with barbs and preparation method thereof

An artificial heart valve and interventional technology, applied in the direction of heart valves, can solve the problems of few types of stents, failure to achieve ideal interventional treatment effects, rapid and accurate release and easy displacement, etc., to achieve long service life, not easy to shift, The effect of preventing paravalvular leak

Inactive Publication Date: 2015-07-29
SHANGHAI NEWMED MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the existing stents for interventional artificial heart valves are still in the initial stage of research, and there are few types of stents, which are not conducive to rapid and accurate release, and are prone to displacement under blood flow pressure and washing after release. Ideal interventional treatment effect

Method used

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  • Involvement type prosthetic heart valve stent with barbs and preparation method thereof
  • Involvement type prosthetic heart valve stent with barbs and preparation method thereof
  • Involvement type prosthetic heart valve stent with barbs and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A stent for an interventional artificial heart valve with barbs, the stent is an elastic stent that can expand and contract in the radial direction, and includes a tubular structure part and a skirt-shaped opening structure part, the diameter of the skirt-shaped opening structure part is larger than the The diameter of the tubular part, the tubular structure part and the skirt-shaped opening structure part are coaxially fixedly connected, and barbs are also provided in the bracket, and the barbs extend from the tubular structure part to the skirt-shaped opening structure part and to the outside of the bracket tilt. The stent can expand and contract in the radial direction. When it is installed and transported, it is convenient to tighten the stent and put it into the delivery device with limited volume. Sufficient blood flow channels; the structure of the tubular structure and the skirt-shaped opening structure is consistent with the physiological structure of the natur...

Embodiment 2

[0076] Such as Figure 1 to Figure 3 Shown is a stent 6 of an interventional artificial heart valve. The stent 6 is composed of a closed grid support unit. The stent 6 includes: a delivery connection part 1, a support unit 7, a leaflet suture hole 2, and a development hole at the lowest point of the leaflet 3. The upper suture hole 4, the lower suture hole 5, and the developing ball 8; the bracket 6 is made of a nickel-titanium tube after laser cutting and heat treatment, and the laser cutting machine cuts out the original shape of the valve bracket on the thin-walled nickel-titanium alloy tube. Then it is heat-set into a predetermined shape through molds of different shapes. After the bracket 6 is shaped, it includes two parts, one part is a tubular structure, and the other part is a skirt-shaped opening structure. The two parts are connected to each other by interconnected support units 7, wherein The diameter of the skirt-shaped opening structure is larger than the diameter...

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Abstract

The invention discloses an involvement type prosthetic heart valve stent with barbs and a preparation method thereof, and belongs to the technical field of involvement type medical devices. The stent is an elastic stent which can stretch or retract in a radial direction, and comprises a tubular structural part and a skirt-shaped open structural part; the diameter of the skirt-shaped open structural part is greater than that of the tubular structural part; the tubular structural part and the skirt-shaped open structural part are coaxially and fixedly connected; barks are also arranged in the stent; the barbs extend from the tubular structural structure to the skirt-shaped open structural part and are tilted to the outer side of the stent. The stent can extend and retract in the radial direction so as to facilitate the mounting, the transporting and the releasing in involvement treatment; the stent structure is matched with the physiological structure of a natural valve, has a certain self-positioning function, and is convenient to position and release quickly and accurately; the barbs can penetrate into the tissues around the valve after the heart valve is planted into a specific position so as to achieve a positioning effect; displacement and perivalvular leakage are not easily caused after the valve is released.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and in particular relates to a barbed interventional artificial heart valve bracket and a preparation method thereof. Background technique [0002] The heart is a very important organ of the human body, which provides power for the blood circulation of the human body. The heart is divided into two parts, the left and the right. Each part contains a ventricle and an atrium. There are valves between the atria, ventricles, and arteries that prevent blood from flowing back. The valve between the left atrium and left ventricle is the mitral valve, the valve between the right atrium and right ventricle is the tricuspid valve, the valve between the left ventricle and the aorta is the aortic valve, and the valve between the right ventricle and the aorta is the aortic valve. The valve between the pulmonary arteries is the pulmonary valve. [0003] The above-mentioned valves will o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
Inventor 虞奇峰王海山秦涛
Owner SHANGHAI NEWMED MEDICAL CO LTD
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