Patent ID: 6090910
Filing Date: 2000-07-18
Classification: A61L,D01F

Abstract:
A degradable copolymer monofilament consisting of an internal structure having the following separate phases:(a) a matrix phase having a polymer segment exhibiting a Young's modulus of 2 GPa or less and a strength retention of 50% or more after two weeks in water at 37.degree. C., pH 7.3, and(b) a micro-dispersion phase having a polymer segment which exhibits a tensile strength of 200 MPa or more and a strength reduction greater than that of the matrix phase in water at 37.degree. C., pH 7.3,a weight ratio of each component in the matrix phase and the dispersion phase being 50:50 to 95:5, respectively, and the dispersion phase having a needle structure oriented by stretching in the monofilament direction wherein the matrix phase is a poly(.epsilon.-caprolactone) and the dispersed phase is a polyglycolic acid.