Plane forming die for artificial heart valve support

Abstract

The invention discloses a plane forming die for an artificial heart valve support. The forming die comprises a die holder, a die handle, a terrace die, a concave die and an alloy wire fixing device. The die holder comprises a guide pillar, an upper pedestal and a lower pedestal; the upper pedestal is slidably connected with the guide pillar through a guide sleeve; the lower pedestal is fixed at a lower end of the guide pillar; the die handle is arranged on the upper pedestal; the terrace die and the die are mutually cooperated; a surface of the terrace die opposite to the concave die is a curved surface cooperating with a contour line of the artificial heart valve support; the terrace die comprises a middle gear punch and side gear punches arranged on two sides of the middle gear punch; an elastomer is arranged on an upper part of the middle gear punch; the terrace die is connected with the die handle through the elastomer; two elastomers are arranged on a lower part of the concave die; and the concave die is connected with the lower pedestal through the elastomers. The plane forming die for artificial heart valve support designed by the invention lays foundation for further processing of the valve support, valve animal experiment and clinical application.

Description

technical field [0001] The invention relates to a plane forming mold of an artificial heart valve support. Background technique [0002] Currently, for patients with severe heart valve disease, surgical replacement of the artificial valve is ultimately the only effective treatment. Since the biological valve was first implanted in the human body in 1965, it has been widely used in clinical practice because of its excellent biocompatibility and central flow path compared with mechanical valves. After more than 40 years of development, biological valves have reached an acceptable level in terms of hydrodynamic performance, compatibility with the body, and durability of valve function, but they have not yet reached the ideal standard of human natural heart valves. The stress distribution of biological valves and its influencing factors have very important theoretical value and practical significance. At present, bioprostheses with relatively advanced technology and good perfo...

AI Technical Summary

Problems solved by technology

[0003] The artificial heart valve is composed of leaflets, stent and sewing ring. Among them, the shape of the stent and the shape and material of the leaflets are the key factors that determine whether the artificial heart valve has the hydrodynamic performance similar to that of the natural valve. The reason why the artificial heart valve has not reached the ideal state in terms of hydromechanical performance and valve function (resistance) durability is closely related to the unreasonable shape of the valve leaflet, the shape of the stent, and the backward processing technology.

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