artificial heart valve

Abstract

The artificial heart prosthesis valve according to the present invention comprises a stent body, a skirt, and a plurality of valve leaflets, the stent body includes a detachable movable stent and a plurality of claw ears; the detached movable stent includes an upper stent, a lower stent and a puller, The upper bracket includes an upper bracket wall and a plurality of straight sleeves, and the lower bracket is movably arranged on the bottom of the upper bracket, including a lower bracket wall and a plurality of straight rods, and a plurality of straight sleeves are respectively vertically arranged on the upper bracket wall, and the straight sleeve The inner wall of the pipe is provided with a plurality of grooves, the lower bracket wall is cylindrical, and a plurality of straight rods are respectively arranged vertically on the lower bracket wall corresponding to the straight sleeves, and the upper end exposes the end of the lower bracket wall, corresponding to a plurality of concave holes. The outer wall of the upper end of the straight rod is provided with a plurality of protruding buckles. The lower bracket moves in the straight sleeve through the upper end of the straight rod to change the distance between the end of the upper bracket and the claw ears. The lower bracket and the upper bracket pass through the clip The connection between the buckle and the groove is fixed.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an artificial heart prosthesis valve. Background technique [0002] The heart is the most important organ in the vertebrate body. Its main function is to provide pressure for blood flow and to run blood to all parts of the body. The heart consists of four chambers: left atrium, left ventricle, right atrium, and right ventricle. The left and right atria and the left and right ventricles are separated and do not communicate with each other. There are valves (atrioventricular valves) between the atrium and the ventricle. These valves have the function of "one-way valve", that is, through the "opening and closing movement", the blood can only flow into the ventricle from the atrium, but cannot flow back. The valve between the left atrium and the left ventricle is called the mitral valve, and the valve between the right atrium and the right ventricle is called the tricuspid valve. (T...

AI Technical Summary

Problems solved by technology

If the subvalvular height of the artificial valve stent is too high, it will affect the original heart structure and heart function, cause chordae tendon rupture, touch the papillary muscle and other heart tissue abnormalities, and at the same time easily cause left ventricular outflow tract obstruction and induce adverse postoperative effects

[0017] 3. Traditional stents are integrated stents, mostly made of laser-cut pipes or wire braided. The overall material, wall thickness, and strength of the stents are roughly the same

When the stent is inserted into the heart, except for the key parts that play a supporting role, the mechanical properties of the remaining parts are too large, which will affect the contraction of the heart and reduce the fatigue performance of the stent

Images