Patent ID: 7084082
Filing Date: 2006-08-01
Classification: A61L,D04H,Y10S,Y10T

Abstract:
1. A collagen material consisting of a matrix of a non-woven fabric multi-element structure of collagen fibers having ultra-fine fibers of collagen as its basic unit, the matrix being filled with a substance having biocompatibility that can be degraded and absorbed in the body, wherein said substance having biocompatibility that can be degraded and absorbed in the body is fibrous collagen fiber or a substance selected from the group consisting of polyglycolic acid, polylactic acid, copolymer of glycolic acid and lactic acid, polydioxanone, copolymer of glycolic acid and trimethylene carbonate, and a mixture of polyglycolic acid and polylactic acid, wherein said non-woven fabric multi-element structure of collagen fibers is composed of collagen plate fibers having a diameter of 20–50 μm randomly intertwined, said plate fibers consisting of collagen fibers having a diameter of 5–8 μm, wherein the collagen fibers overlap in the coaxial direction, said fibers consisting of bundled rows of narrow collagen fibers having a diameter of 1–3 μm alternately overlapping as warp and weft, said narrow fibers consisting of bundled fine collagen fibers having a diameter of 30–70 nm, and said fine fibers consisting of ultra-fine collagen fibers having a diameter of 3–7 nm that are comprised of several bundled collagen molecules.