Anti-regurgitation artificial heart valve

Abstract

The invention discloses an anti-regurgitation artificial heart valve, which comprises a tubular support, skirt cloth covering the inner surface of the tubular support, a plurality of artificial valve leaflets fixed in the tubular support, and an anti-regurgitation ring arranged outside the tubular support in a sleeving mode, wherein the anti-regurgitation ring comprises a plurality of anchoring parts; the anchoring parts are designed into a unique shape with double supporting feet at the bottom and a deformable grid in the middle; one pair of side ribs is inserted along two sides of the interior of the semilunar valve; a first bottom rib and a second bottom rib are abutted against two sides of the bottom of the aortic sinus so as to form two acting points; and a contact area is increased through a grid consisting of inner ribs. Compared with most existing technical schemes adopting a U-shaped or V-shaped simple outer frame to exert force at a single point, when the anchoring parts and the native valve leaflet are inserted and positioned, an alignment deviation is small, positioning is accurate and convenient, the anchoring parts have a good shaping effect on the native valve leaflet, a clamping area is large, and the native valve leaflet can be more stably and firmly clamped when the native valve leaflet is clamped inside and outside the anti-regurgitation ring and the tubular support.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an anti-reflux artificial heart valve. Background technique [0002] Aortic valve disease is a common heart valve disease, in which the prevalence of aortic regurgitation and aortic stenosis ranks second and third among all heart valve diseases, and increases with age, 65 years old In the above elderly population, the prevalence of aortic valve disease is as high as 3%. Symptomatic severe aortic stenosis and regurgitation have a very poor prognosis in the natural course of the disease. The two-year survival rate is 50%, and the five-year survival rate is only 20%. Valve replacement surgery is an effective treatment. Many symptoms, poor left ventricular function and unable to withstand traditional surgical thoracotomy. [0003] In recent years, transcatheter valve implantation / repair has gradually matured and been widely used. In particular, transcatheter aortic valve implantation...

AI Technical Summary

Problems solved by technology

Various existing technical solutions, including several marketed products, have different structural designs and outstanding functional characteristics, but all have limitations in the positioning convenience and anchoring stability of the native valve leaflets

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