Patent ID: 7576034

Claim:
A crosslinked optically active three-dimensional polymer network consisting of homochiral units of a first selector and of homochiral units of at least one second selector of a structure different from the first selector, the homochiral units of the first selector containing at least three polymerizable or crosslinkable functional groups and the homochiral units of the second selector containing at least two polymerizable or crosslinkable functional groups, the homochiral units being chemically linked to one another, with the exclusion of the crosslinked three-dimensional polymer networks obtained either by reductive amination of chitosan and 2,3-dialdehydo-β-cyclodextrin, or by reaction between chitosan and chlorotriazinyl-β-cyclodextrin, or by crosslinking of a polysaccharide and a protein, or by reductive amination of a first polysaccharide, in which the saccharide rings have been opened using an oxidizing agent so as to form aldehyde functions, with a second polysaccharide carrying at least two amine functions, said first and second polysaccharides being chosen from hyaluronic acid, dextran, dextran sulfate, keratan sulfate, heparin, heparin sulfate and alginic acid.