Artificial valve prosthesis

Abstract

The invention discloses artificial valve prosthesis. The artificial valve prosthesis comprises a support body and a valve leaflet assembly, wherein the support body comprises a first support and a second support, the first support is provided with a connecting end, the second support comprises a plurality of support rods, the support rods are fixed to the connecting end of the first support, the valve leaflet assembly is provided with a first valve leaflet fixing part, and the valve leaflet assembly is fixed to the connecting end of the first support through the first valve leaflet fixing part. Compared with a frame structure composed of a plurality of closed geometric units in the prior art, the second support is mainly composed of the plurality of support rods, materials of the support body are reduced, and therefore the sectional area of a conveying device is reduced, and the wound area of a patient is reduced; and in addition, the support structure of the area clamped by the valve leaflet assembly and the second support is relatively sparse, blood is not prone to deposition at the position, and therefore the risk of thrombosis is reduced.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a transcatheter artificial heart valve prosthesis. Background technique [0002] The heart contains four chambers, the right atrium (RA), right ventricle (RV), left atrium (LA) and left ventricle (LV). The pumping action of the left and right sides of the heart generally occurs simultaneously throughout the cardiac cycle. The valve that separates the atria from the ventricles is called the atrioventricular valve. The atrioventricular valve acts as a one-way valve to ensure the normal flow of blood in the heart chambers. The atrioventricular valve between the left atrium and left ventricle is the mitral valve, and the atrioventricular valve between the right atrium and right ventricle is the tricuspid valve. The pulmonary valve directs blood flow to the pulmonary artery, and from there to the lungs; blood returns to the left atrium through the pulmonary vein. The aortic valve d...

AI Technical Summary

Problems solved by technology

[0007] In recent years, there have been some breakthroughs in the field of artificial valves, but due to the complexity of the mitral valve and its surrounding structures, mitral valve treatment is still facing great challenges, for example, 1. How to solve the problem of blood flow in the valve leaflets? Deposition at the connection position with the stent to avoid thrombus formation there; 2. How to reduce the diameter of the delivery valve device, thereby reducing the trauma area during implantation; 3. How to prevent the original valve leaflets from blocking the outflow tract and solve the outflow tract obstruction problem

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