Patent ID: 8101196
Filing Date: 2012-01-24
Classification: A61L,C08B,Y10S

Abstract:
1. A medical apparatus shaped as a tubular member and comprising: a three-dimensional crosslinked hydrogel made by a process that comprises polymerizing, in organic solvent, water-insoluble quaternary ammonium-polyanionic polysaccharide macromer salt complexes that comprise covalently attached vinylic monomers that undergo the polymerizing to form polymers crosslinked to form the hydrogel, with the hydrogel forming a tubular member having a free exterior surface and a free interior surface connected by a thickness of the crosslinked hydrogel, wherein said vinylic monomers are joined through covalent bonds to the polysaccharide in the polysaccharide macromer salt complexes.