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Conveying system for involvement type artificial cardiac valve

A technology of artificial heart valve and delivery system, applied in the direction of heart valve, etc., can solve the problem that the application requirements cannot be well met.

Active Publication Date: 2015-07-08
SHANGHAI NEWMED MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing conveying system is in the research and development stage and cannot meet the application requirements well.

Method used

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  • Conveying system for involvement type artificial cardiac valve
  • Conveying system for involvement type artificial cardiac valve
  • Conveying system for involvement type artificial cardiac valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] An interventional artificial heart valve delivery system includes an interventional artificial heart valve and a delivery device thereof, the interventional artificial heart valve includes an elastic support stretchable in the radial direction, a covering film and at least two leaflets, the covering The membrane is sutured on the inner wall or the outer wall of the stent, the leaflets are arranged in the cavity of the stent, the lower edge of the leaflets is sutured on the covering membrane, and the adjacent sides of the leaflets of adjacent blocks are joined together, so that The vertices of the sides are sutured on the bracket; the delivery device includes an outer sheath and a push tube, the push tube is set in the outer sheath and can move axially in the outer sheath, and the proximal end of the push tube leaks out The proximal end of the outer sheath tube, the distal end of the push tube is provided with a stent connector that can cooperate with the interventional a...

Embodiment 2

[0129] In a kind of interventional artificial heart valve delivery system described in embodiment 1, adopt Figure 4 with Figure 5 The shown interventional artificial heart valve comprises a radially stretchable elastic stent, a covering film and at least two leaflets, the covering film is sutured on the inner or outer wall of the support, and the leaflets are arranged on the In the cavity of the stent, the lower edges of the leaflets are sutured on the covering film, and the adjacent sides of the two adjacent leaflets are stitched together, and the sides are sutured on the stent, and the elastic stent is as follows: Figure 1 to Figure 3 As shown, the stent structure 6 is composed of a closed grid support unit, and the stent 6 includes: a delivery connection part 1, a support unit 7, a leaflet suture hole 2, a leaflet nadir developing hole 3, an upper suture hole 4, and a lower suture hole 5. Developing ball 8; bracket 6 is made of a nickel-titanium tube through laser cutti...

Embodiment 3

[0139] In the interventional heart valve described in Example 2, a barb structure is added to the elastic stent, and the barb extends from the tubular structure part to the skirt-shaped opening structure part and is inclined to the outside of the stent, such as Figure 6~8 shown.

[0140] As an optional manner, the included angle between the barb and the outer surface of the bracket is 10-80 degrees, and further the included angle is 45 degrees.

[0141] As an optional manner, the barbs are arranged at the junction between the bottom row of mesh structure units in the tubular structure portion.

[0142] As an option, the end of the barb is wedge-shaped or needle-shaped.

[0143] As an optional manner, the barbs are straight, "V" or "U". Such as Figure 9 shown.

[0144] As an optional manner, the barb is provided with a developing site. Such as Figure 9 mentioned.

[0145] As an optional manner, the developing site includes a developing hole and a developing medium fille...

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Abstract

The invention discloses a conveying system for an involvement type artificial cardiac valve and belongs to the technical field of involvement type medical apparatus and instruments. The conveying system comprises the involvement type artificial cardiac valve and a conveying device thereof, the functions of a natural valve can be well replaced with the valve, the blood can be effectively prevented from backflow through the valve, an elastic support is adopted, the support is convenient to install into the conveying device and release to the objective position rapidly for being combined with tissues around the objective position tightly, a wrapping film is adopted to wrap the support so that the perivalvular leakage can be prevented effectively, the sutured structure of the combination between valve leaflets and the wrapping film is high in bionic degree, the natural valve can be well simulated, the functions of the natural valve can be replaced, the structure is stable, firm and durable, and the valve can adapt to the elastic stretching requirements in the installing and releasing process so that the valve can not be damaged; the conveying device is simple in structure, convenient to use and high in releasing success rate, the valve is applicable to conveying-releasing strategies of the involvement type artificial cardiac valve in various ways, and the involvement type artificial cardiac valve can be released rapidly and accurately.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and in particular relates to an interventional artificial heart valve delivery system. 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 open and close correspondingly w...

Claims

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Application Information

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IPC IPC(8): A61F2/24
Inventor 虞奇峰王海山秦涛
Owner SHANGHAI NEWMED MEDICAL CO LTD
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