Support-less artificial bio-prosthetic valve

Abstract

The invention discloses a support-less artificial bio-prosthetic valve, which comprises an inner lining tube, three pieces of valve leaves and an outer lining tube, the inner lining tube wall is provided with three narrow slit with a shape of approximately semi-circular arc on the circumferential circle, the lower margins of the three valve leaves are arranged between the inner lining tube and the outer lined backing sheet along the three narrow slits, the closing threads sews the inner lining tube, the peripheral portions of the three valve leaves and the outer lined backing sheet along the margin of the inner lining narrow slit, the inner lining tube and the outer lined backing tube extend to the two ends, thus forming the upper and lower tunnels for the support-less valve. The invention solves the problem in the prior art that the valve leaves are fixed only by closing threads, higher security for the valve leaves are achieved, early calcification of the valve leaves and the inner lining tube can be prevented effectively, the long-term follow-up results for the patients can be improved substantially.

Description

technical field [0001] The invention relates to an artificial organ, in particular to a stent-free artificial biological valve for heart outflow tract repair and aortic and pulmonary valve replacement. Background technique [0002] Cardiac surgical reconstruction is required in some patients with congenital heart disease such as severe pulmonary stenosis, tetralogy of Fallot with pulmonary hypoplasia, common arterial trunk, transposition of the great arteries with ventricular septal defect, and pulmonary atresia Pulmonary tube with pulmonary valve. In addition, in the Ross procedure, an autologous pulmonary valve is implanted in the aortic valve position to replace the failed aortic valve, and a stentless bioprosthetic valve needs to be implanted in the pulmonary valve position. In the past, it can be used in this type of operation: ①. Allogeneic aortic valve-bearing conduit, but due to the limited source of the same material, there are many problems in its storage and tran...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to design a new stentless artificial biological valve and provide a special sewing structure to realize the use of selected high-quality bovine pericardium materials to make a stentless artificial biological valve placed in the pipeline , so that it has very good hemodynamic performance and very good firmness and fatigue resistance, so that the service life of the flap is significantly extended

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