US Patent 7297343 Bioactive medical films

A wound dressing, method of making, and method of use, utilizing a polymeric film having complexed thereto by hydrophobic interaction a construct including a polyanion covalently bonded to a hydrophobic prosthetic moiety, with one or more bioactive molecules directly complexed to the polyanion. The polyanion may be heparin or a heparin-activity molecule. The prosthetic group may include a hydrophobic silyl-containing moiety. Bioactive molecules include adhesive molecules, growth factor molecules, and therapeutic molecules, including antibiotics.