Biocompatible Product Having A Matrix Comprising a Polysaccharide Co-Crosslinked With Chitosan

A biocompatible product having a matrix comprising:

• a polysaccharide selected from the group comprising hyaluronic acid, a salt of hyaluronic acid, chondroitin sulfate, cellulose derivatives, and a mixture thereof,
• with a divalent zinc cation present in the matrix,
• characterized in that:
• the matrix comprises chitosan, preferably a chitosan derivative or a salt of chitosan,
• in said matrix, at least part of the polysaccharide is co-crosslinked with at least a part of chitosan, of chitosan derivative, or of a salt of chitosan.