Valve prosthesis capable of effectively improving perivalvular leakage

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to the field of A61F2 / 24, in particular to a valve prosthesis capable of effectively improving perivalvular leakage. The invention provides the valve prosthesis capable of effectively improving perivalvular leakage, which is characterized by comprising a support, a prosthetic valve leaflet and a leakage-proof ring, wherein the support is of a hollow annular structure; the prosthetic valve leaflet is fixedly arranged in the annular structure of the support; the leakage-proof ring is arranged on the periphery of the components (defined in the specification) in a surrounding manner; and the prosthetic valve leaflet and the leakage-proof ring are fixedly connected with the support. An attaching skirt edge can effectively attach to the native leaflet, so that after the valve prosthesis is implanted, the gap between the leakage-proof ring and the heart tissue is reduced, and when the valve is opened and closed, the attaching skirt edge can also attach to the native leaflet, and perivalvular leakage is avoided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, specifically relates to the field of A61F2 / 24, in particular to a valve prosthesis which can effectively improve paravalvular leakage. Background technique [0002] Tricuspid regurgitation is generally caused by pulmonary hypertension, enlarged right ventricle, and dilation of the tricuspid valve ring. Clinically, the etiology of tricuspid regurgitation (left heart failure, pulmonary hypertension, etc.) After reflux, symptoms of right heart failure such as fatigue, ascites, edema, pain in the liver area, indigestion, and anorexia aggravate. Mild tricuspid regurgitation has no obvious clinical symptoms, but when severe regurgitation requires surgical treatment. Traditional treatments for mitral and tricuspid valve disease include medical therapy for mild to severe regurgitation and surgical approaches where appropriate. Among them, surgical methods also include valve replacement and valv...

AI Technical Summary

Problems solved by technology

The defect of this design is that the valve prosthesis is not equipped with an effective leak-proof structure at the valve, and the shaking of the valve prosthesis after implantation cannot be avoided, resulting in a greater risk of paravalvular leakage

The defect of this design scheme is that when the autogenous valve leaflet is clamped by the valve leaflet lifting blocking device, it is closely attached to the self-adaptive covered stent, and because the adaptive covered stent is flexible, it can adapt to the movement of the heart tissue and always fit the heart tissue Therefore, when the self-adaptive stent graft and the leaflet lifting device are used together to clamp the autologous valve leaflet, the autologous valve leaflet is likely to be displaced with the movement of the adaptive stent graft, and the clamping effect of the autologous valve leaflet is not strong.

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