Patent ID: 6090996
Filing Date: 2000-07-18
Classification: A61B,A61L

Abstract:
An implant comprising a porous matrix sheet made of biocompatible and bioresorbable biopolymeric material, said matrix sheet having at least one portion spaced from and overlapping another portion of said matrix sheet; wherein said implant having a density ranging from about 0.05 g/cm.sup.3 to about 1.3 g/cm.sup.3, a pore size ranging from about 0.1 .mu.m to about 1,500 .mu.m, and a spacing between overlapping portions of said matrix sheet ranging from about 0.1 .mu.m to about 2,000 .mu.m, and, upon absorption of a fluid, is expandable geometrically and directionally and has a volume expansion rate ranging from about 2 cm.sup.3 /cm.sup.3 to about 100 cm.sup.3 /cm.sup.3, and, in the expanded state, has a density ranging from about 0.01 g/cm.sup.3 to about 0.5 g/cm.sup.3, a pore size ranging from about 10 .mu.m to about 2,000 .mu.m, and a spacing between overlapping portions of said matrix sheet ranging from about 10 .mu.m to about 5,000 .mu.m.