Method for preparing an artificial heart valve leaflet
First Claim
1. A method for preparing an artificial heart valve leaflet comprisingpre-treating an animal tissue membrane comprised of immersing the animal tissue membrane in a cryoprotectant,freezing the animal tissue membrane comprised of placing the animal tissue membrane on a mould having a center that is convex and periphery that is concave relative to the center of said mould, and having a thickness distribution corresponding to that of the artificial heart valve leaflet;
- and then together with the mould the animal tissue membrane is immersed into liquid nitrogen for freezing, andprocessing the frozen animal tissue membrane to a preset thickness.
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Abstract
The present invention provides a method for preparing an artificial heart valve leaflet, comprising freezing an animal tissue membrane and processing the frozen animal tissue membrane so as to reach a preset thickness. The method, by processing the frozen animal tissue membrane, can conveniently obtain an artificial heart valve leaflet with a required thickness and increase the yield of the animal tissue membrane valve leaflet.
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Citations
10 Claims
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1. A method for preparing an artificial heart valve leaflet comprising
pre-treating an animal tissue membrane comprised of immersing the animal tissue membrane in a cryoprotectant, freezing the animal tissue membrane comprised of placing the animal tissue membrane on a mould having a center that is convex and periphery that is concave relative to the center of said mould, and having a thickness distribution corresponding to that of the artificial heart valve leaflet; - and then together with the mould the animal tissue membrane is immersed into liquid nitrogen for freezing, and
processing the frozen animal tissue membrane to a preset thickness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- and then together with the mould the animal tissue membrane is immersed into liquid nitrogen for freezing, and
Specification