Medical supplementary material producing process

Abstract

The present invention relates to a producing process of medical supplementary material. The medical supplementary material is produced via reaction at certain conditions using chitosan as main raw material, chloroform as medium and acetyl chloride or formyl chloride as reactant. It is used in preparing film for preventing operational adhesion, artificial skin, artificial cerebral dura mater, absorbable catgut suture and medical rack. The said material has excellent compatibility with human tissue without foreign body inflammation, high drawing strength and high flexibility.

Description

technical field

[0001] The present invention relates to a manufacturing method of medical auxiliary materials, more precisely, the present invention relates to a manufacturing method of medical auxiliary materials used for preventing surgical adhesion films and artificial skin, artificial dura mater, absorbable surgical sutures, and medical stents. Background technique

[0002] The raw material used in the method of the invention is deacetylated chitin, which is a positively charged natural polysaccharide, and is a product obtained from shells of shrimps and crabs. During hundreds of millions of years of evolution, the exoskeleton of crustaceans has unique biological characteristics, which can inhibit the growth of fibroblasts, promote the growth of epithelial cells and inhibit the growth of bacteria. Polysaccharides prepared from this kind of carapace have good compatibility with human tissue, are non-toxic, non-irritating, and non-immunogenic to the human body, so they hav...