Tricuspid valve prosthesis

Abstract

The invention discloses a tricuspid valve prosthesis. The tricuspid valve prosthesis comprises a stent main body implanted at a tricuspid valve ring and used for supporting an artificial valve leaflet; and an anchoring structure arranged above the stent main body and used for anchoring the stent main body at a native valve ring to prevent the stent main body from shifting. The anchoring structureis configured to be partially attached to the fossa ovalis of the atrial septum, retention force is formed by attaching the fossa ovalis, and therefore the anchoring effect on the valve prosthesis isachieved. Under the enlightenment of the original structure of the fossa ovalis, the concave structure of the fossa ovalis is fully utilized to partially clamp and fix the anchoring structure in the fossa ovalis, so that a certain retention force is provided, and the valve prosthesis is prevented from shifting during cardiac compression; and according to the anchoring structure, a traditional anchoring mode of clamping the valve leaflet or grabbing the valve leaflet is changed, and the chordae tendineae cannot be pulled or the valve leaflet cannot be damaged.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a valve prosthesis implanted in the heart for replacing the original tricuspid valve. Background technique [0002] Heart valves are membrane-like structures that can open and close in the organs of humans or certain animals. Every human heart has four valves. The aortic valve connects the left ventricle to the aorta, the pulmonary valve connects the right ventricle to the pulmonary artery, the mitral valve connects the left atrium to the left ventricle, and the tricuspid valve connects the right atrium to the right ventricle. They all act as one-way valves, so that blood can only flow from one direction to the other and not back. [0003] With the development of social economy and the aging of the population, the incidence of valvular heart disease has increased significantly. Studies have shown that the incidence of valvular heart disease in the elderly population ove...

AI Technical Summary

Problems solved by technology

[0005] Although the technology of tricuspid valve replacement is developing rapidly, there are still some recognized difficulties in the design of the valve, for example, 1. The anchoring of the valve

The existing tricuspid valve design basically adopts clipping leaflets or grabbing leaflets for anchoring. These two anchoring methods will pull the tendons and cause damage to the original leaflets.

Some people also proposed to use the atrioventricular septum for anchoring, but this anchoring method is not reliable, and additional leaflets need to be used, otherwise it is easy to fall off, posing a safety hazard

2. There is a risk of conduction block

Anchoring through the main body of the stent, the stent will compress the conduction tissue, and there will be a risk of conduction block

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