METHOD FOR PREPARING COMPOSITE CHITOSAN AND COLLAGEN RESORBABLE MATRIXES FOR HUMAN SKIN CELL CULTURE Russian patent published in 2011 - IPC A61L27/38 

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to chemistry of high-molecular compounds, namely to preparing film and spongy chitosan and collagen materials effective in human skin cell culture and wound grafting. A method for preparing the composite chitosan and collagen resorbable matrixes for human skin cell culture involves preparation of solutions polysaccharide chitosan and protein collagen, mixing them in preset proportions and formation of film and spongy matrixes of mixed polymer solutions. For this purpose, chitosan and collagen solutions in the concentration 1.0-4.0 wt % in a general solvent (aqueous 2 % acetic acid) are prepared, mixed in preset proportions, and the film and spongy matrix materials are formed from the prepared solutions. An amount of collagen in polymer mixtures makes 2.5-10 wt % (of chitosan). Further, films and sponges are heated to temperatures within 50-100°C for 1.0-5.0 h in an atmospheric environment.

EFFECT: use of the declared method allows preparing the film and spongy resorbable composite materials of natural polymers effective in human skin cell culture.

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