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artificial valve prosthesis

An artificial valve and valve technology, which is applied in the field of medical devices to achieve good opening and closing functions, increase margin, and prevent paravalvular leakage.

Active Publication Date: 2019-10-18
NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of the present invention has the characteristics of accurate positioning, stable clamping, firm clamping, avoiding damage to autologous tissue, reducing left ventricular outflow tract area obstruction and reducing paravalvular leakage, etc. Minimize tissue damage and reduce complications

Method used

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Experimental program
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specific Embodiment 1

[0054] Figure 1a It shows a schematic cross-sectional view of the left ventricle. When the artificial valve prosthesis is used to treat mitral valve diseases, a1-a2 is the central axis of the blood flow direction of the valve sewing segment, also known as the The axis line of the sewing section of the valve, b1-b2 is the central axis of the blood flow direction of the clamping device, a1-a2 is parallel to b1-b2, plane A is the closing plane of the native valve, and plane B is the On the opposite side of the closure surface of the native valve, the radial direction of the cross-section of the valve sewing section is called the radial direction of the valve sewing section, and the valve sewing section is close to the circumference of the axis line. The facing surface is an inner surface, and the circumferential surface of the valve sewing segment away from the axis line is an outer surface.

[0055] In one embodiment of the present invention, as Figure 1b As shown, an artifi...

specific Embodiment 2

[0059]In order to better illustrate the working principle of the present invention, the release process of the artificial valve prosthesis of the present invention when it is used to treat mitral valve disease will be explained step by step below:

[0060] Such as Figure 2a As shown, the artificial valve prosthesis is approached from the apex of the heart through the delivery system 2000 . Such as Figure 2b As shown, the delivery system 2000 includes a handle 2100, an outer sheath 2200 and an inner sheath 2300. By operating the handle 2100, the clamping device 1120 placed in the outer sheath 2200 is released. In the embodiment, the number of the clamping device 1120 is one, and at this moment, the stent and the artificial valve are still partially or completely compressed in the inner sheath 2300 . Such as Figure 2c-2d As shown, the free end of the self-adaptive section 1123 spreads away from the inside of the bracket to the outside of the bracket, forming an angle α; in...

specific Embodiment 3

[0064] Such as Figure 4a As shown, an artificial valve prosthesis 1000 is used to treat mitral or tricuspid valve diseases, including a stent 1100 and an artificial valve 1200, the stent 1100 is made of shape memory alloy, and includes a valve sewing segment 1110 , at least one clamping device 1120 and an atrium segment 1130, the artificial valve 1200 is fixedly connected to the valve sewing segment 1110, the axis line of the valve sewing segment 1110 is a1-a2, and the valve sewing segment The section 1110 is also sewn with a polymer or animal-derived material (not shown) that can prevent the passage of blood flow, and the proximal end of the atrium section 1130 is integrally cut and fixedly connected with the distal end of the valve sewing section 1110 , is also sewn with polymers or animal-derived materials (not shown) that can prevent the passage of blood flow, and the projected area of ​​the atrial segment 1130 in the radial direction of the valve sewing segment 1110 is g...

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Abstract

The invention relates to a prosthetic valve prosthesis. The prosthetic valve prosthesis comprises a stent and a prosthetic valve. The stent comprises a valve sewing section and at least one clamping device. The prosthetic valve is fixedly connected to the valve sewing section. The clamping device is composed of a connecting section, a clamping section and an adaptive section, wherein the connecting section is fixedly connected with a part of the valve sewing section, one end of the connecting section is fixedly connected with one end of the clamping section, the adaptive section is fixedly connected with the clamping section, and one end of the adaptive section is dissociated from the valve sewing section to serve as a free end. In the natural state, the clamping section approaches the outer surface of the valve sewing section, and the supporting force of the adaptive section in the direction of the axis line is smaller than that of the clamping section in the direction of the axis line. When the prosthetic valve prosthesis is released to a target position, the clamping device plays a fixing role, and the prosthetic valve replaces the native valve to achieve valve opening and closing.

Description

Technical field: [0001] The invention belongs to the field of medical equipment, in particular to an artificial valve prosthesis. Background technique: [0002] The mitral valve is located in the left ventricle. The mitral valve includes an anterior leaflet (anterior leaflet), a posterior leaflet (posterior leaflet) and a junctional area (anterior junctional area and posterior junctional area). There is no chordal attachment to the septum. Due to its complex physiology, it is also called the mitral valve device. The mitral annulus is a band of fibrous tissue attached to the edge of the left atrioventricular orifice, in an irregular "D" shape. The anterior third of the mitral annulus is the continuous part of the anterior valve and the aorta. The angle formed by the corresponding atrium and the mitral valve ring is also different, and the left atrial appendage is attached to the atrium. Mitral valve insufficiency is one of the most common heart diseases, such as mitral val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24
Inventor 陈志李佳楠曹鹏李毅斌徐志云宋智钢
Owner NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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