A two-leaf bioprosthesis

Abstract

The invention discloses a bicuspid bioprosthetic valve. The bicuspid bioprosthetic valve is equipped with a backing ring, a membrane A and a membrane B. The bicuspid bioprosthetic valve is also equipped with a positioning sheet, a hanging sheet of the membrane A and a hanging sheet of the membrane B. The backing ring is quasi-circular-shaped. The membrane A and the membrane B are respectively provided with membrane tips and equipped with the hanging sheet of the membrane A and a hanging sheet of the membrane B. The membrane tips of the membrane A and the membrane B are overlapped and fixed atone end of the backing ring through a fixing line. The hanging sheet of the membrane A and the hanging sheet of the membrane B are folded with the positioning sheet. The positioning sheet is tied andfixed at the other end of the backing ring through the positioning sheet such that the bicuspid bioprosthetic valve form a circular-arc opening of the membrane A, a membrane B, a joint between the hanging sheet of the membrane A and the hanging sheet of the membrane B and a membrane joint between the membrane A and the membrane B. The bicuspid bioprosthetic valve is reasonable in design, simple inmanufacture and suitable in placement condition. Joints between a valve ring and bicuspid valve membranes are opened and closed simultaneously in order to provide the maximum area of a bicuspid valveorifice. Therefore, occurrences of blood events are greatly reduced. Meanwhile, noise of the bicuspid valve is reduced such that myocardium diastole and contraction are more suitable for the physiological state. The valve is easy to promote and use.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an apparatus for heart valve surgery for replacing diseased heart valves, and more specifically provides a two-leaf biological valve for replacing human heart valve functions. Background technique [0002] In vertebrates, the heart is a hollow muscular organ with four pumping chambers: a left and right atrium and a left and right ventricle, each with its own one-way valve. The synchronized pumping action of the left and right sides of the heart makes up the cardiac cycle. The cycle begins with a period of ventricular diastole, which is called ventricular diastole. The driving force behind the general circulation of blood flow in the human body is the contraction force of the ventricular muscle, and the opening and closing of the valve is realized when the blood flow flows from the ventricular jet to the venous return to the atrium. Ventricular contraction is the power p...

AI Technical Summary

Problems solved by technology

[0006] ②The difference between the cylindrical shape and the approximate elliptical shape of the tricuspid valve is obvious, which has a great deformation obstacle effect on the anatomical reconstruction of the tricuspid valve;

[0007] ③The cylindrical design limits the effective area of ​​the valve orifice, causing negative obstacles and negatively affecting myocardial systolic function;

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