Patent ID: 6794485
Filing Date: 2004-09-21
Classification: A61L,C08G

Abstract:
An absorbable, crystalline, monocentric, polyaxial copolymer having improved mechanical characteristics and hydrolytic stability comprising:at least three axes originating and extending outwardly from the center of the copolymer, said center being formed from an at least tri-functional initiator molecule, each axis comprising: an amorphous, flexible component adjacent to and originating from the center, said flexible component comprising repeat units derived from at least one cyclic monomer selected from the group consisting essentially of carbonates and lactones; and a rigid, crystallizable component extending outwardly from the amorphous, flexible component, said crystallizable component being formed of repeat units derived from at least one lactone, characterized in that lactide is contained in at least one of said two components while glycolide is excluded from said at least one component.