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A new type of artificial heart valve

A new type of artificial heart technology, applied in the field of artificial heart valves, can solve the problems of cardiac conduction disorder, high risk, and high endocardial pressure, and achieve the effect of reducing compression and risk.

Active Publication Date: 2016-08-03
PEIJIA MEDICAL TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the method used, the current stent structure has a common disadvantage, that is, due to excessive invasion of the left ventricular outflow tract, the pressure on the endocardium is too high, resulting in a high risk of cardiac conduction disturbance

Method used

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  • A new type of artificial heart valve
  • A new type of artificial heart valve
  • A new type of artificial heart valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] as attached figure 1 As shown in the schematic diagram of stent implantation, a new type of artificial heart valve is implanted by surgical operation or transvascular intervention to replace the artificial aortic valve of the aortic valve that has lost its function, including stent 1, and pig or bovine artificial aortic valve. Pericardium, or leaflets made of synthetic polymer materials.

[0026] The valve leaflets are made of bovine or pig pericardium. After biochemical treatment, they are die-cut or laser-cut into shape, and then sutured and fixed with a laser-engraved stent. The stent 1 is composed of an inflow section 11 and an outflow section 12, and is expanded by a balloon. or self-inflating expansion.

[0027] The inflow section 11 is provided with a self-expandable ring 2, which is located at the entrance of the left ventricular flow channel, and is fixed in the left ventricle by the self-expandable ring 2. The self-expandable ring 2 is covered with a soft bra...

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Abstract

The invention relates to a novel artificial heart valve which is implanted to replace a de-functionalized heart valve by surgical operation or vascular intervention. The novel artificial heart valve comprises a stent and a valve leaflet. The valve leaflet is made of a porcine or bovine pericardium or made of artificially synthesized high polymer material. The stent is composed of an inflow segment and an outflow segment and dilates by the aid of a balloon or by self-expanding. The inflow segment is provided with a self-expanding ring. Soft braided fabric is wrapped around a nitinol wire to form a soft surface. The valve leaflet is attached to the outflow segment to form a valve leaflet segment integrated with the outflow segment. The left-expanding ring has diameter larger than that of the valve leaflet segment and radial holding power larger than that of the valve leaflet segment. The inflow segment is flexibly connected with the valve leaflet segment. The metallic stent of the novel artificial heart valve need not enter a left ventricular outflow tract, and a left ventricle is internally fixed through the self-expanding ring. In addition, the self-expanding ring has smaller supporting power than the valve leaflet segment and the soft surface, so that stress of an endocardium of a left ventricular outflow tract can be lowered evidently, and risks caused by conduction block are reduced.

Description

technical field [0001] The invention relates to a novel artificial heart valve, in particular to an interventional artificial heart aortic valve. Background technique [0002] Heart valves that lose their function due to disease or other reasons can be repaired or replaced surgically. A typical heart valve operation requires sawing the sternum to open the chest cavity, stopping the heart and using an extracorporeal cardiopulmonary bypass machine to maintain blood circulation in the body, and then cutting the heart to reach the diseased heart valve for repair or replacement surgery. This type of operation is very traumatic to the patient and has a series of high risk factors, such as infection, stroke, kidney failure and other serious complications related to cardiopulmonary bypass. In recent years, surgical methods to replace heart valves through minimally invasive or percutaneous intervention have been increasingly recognized in clinical applications. This kind of surgery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24A61L27/06A61L27/04A61L27/50A61L27/14
Inventor 郭伟张一叶萍赵振心
Owner PEIJIA MEDICAL TECH SHANGHAI
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