Patent ID: 9173969
Filing Date: 2015-11-03
Classification: A61L,A61P

Abstract:
1. A biomaterial comprising a scaffold consisting of collagen, hyaluronic acid, and gelatin, wherein (1) collagen, hyaluronic acid, and gelatin are cross-linked via ethyl-3-[3-dimethylaminopropyl] carbodiimide (EDC); (2) the scaffold has the following structure: wherein X is gelatin-gelatin, gelatin-collagen, or gelatin-hyaluronic acid; Y is collagen-collagen, collagen-gelatin, or collagen-hyaluronic acid; Z is hyaluronic acid-gelatin, hyaluronic acid-collagen, or hyaluronic acid- hyaluronic acid; and n is an integer of 1 or more than 1; (3) the percentage of the collagen is 30% to 45%, the percentage of the hyaluronic acid is 0.1% to 5%, and the percentage of the gelatin is 50% to 70%, provided that total percentage of collagen, hyaluronic acid, and gelatin is 100%; and (4) the biomaterial has a swelling ratio more than 20 fold of dried scaffold.