Artificial heart valve prosthesis and artificial heart valve stent

Abstract

The invention discloses an artificial heart valve prosthesis and an artificial heart valve stent. The artificial heart valve stent comprises an outer-layer bracket and an inner-layer bracket, whereinthe inner-layer bracket is fixedly connected with the outer-layer bracket, the outer-layer bracket is provided with an outer-layer inflow channel structure and an outer-layer outflow channel structure, the outer-layer inflow channel structure and the outer-layer outflow channel structure are axially connected, the inner-layer bracket is provided with an inner-layer inflow channel structure and aninner-layer outflow channel structure and is located on the inner side of the outer-layer bracket in the radial direction, the inner-layer inflow channel structure and the inner-layer outflow channelstructure are connected in the axial direction, and an anchoring structure is arranged on the outer side of the inner-layer bracket. According to the artificial heart valve prosthesis and the artificial heart valve stent, the inner-layer bracket bears the artificial valve leaflet, and is high in rigidity and small in diameter, so that the area of the artificial valve leaflet can be reduced, the height required by the opening and closing movement of the valve leaflet is reduced, and the service life of the valve leaflet is prolonged; the outer-layer bracket is weak in relative rigidity, large in diameter and capable of preventing perivalvular leakage; and the anchoring structure is connected with the inner-layer bracket, and the anchoring force for preventing the prosthetic valve from moving is mainly borne by the inner-layer bracket with high rigidity, so that the service life of the stent is prolonged.

Description

technical field [0001] The invention relates to an interventional medical prosthesis, in particular to an artificial heart valve prosthesis and its support. Background technique [0002] The heart has four chambers, the left atrium and left ventricle are on the left side of the heart, and the right atrium and right ventricle are on the right side of the heart. The atrium and ventricle form a ventricular inflow tract structure, the left ventricle and aorta form a left ventricular outflow tract structure, and the right ventricle and pulmonary artery form a right ventricular outflow tract structure. There are valves with the function of "one-way valve" at the structure of the ventricular inflow tract and the structure of the ventricular outflow tract to ensure the normal flow of blood in the heart chamber. When there is a problem with this valve, the hemodynamics of the heart are altered and the heart functions abnormally, which is called valvular heart disease. [0003] With...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide an artificial heart valve prosthesis and its support, aiming to so

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