A HUMAN NECESSITIES
A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61L METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
A61L2300/00 Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
A61L2300/60 characterised by a special physical form
A61L2300/602 Type of release, e.g. controlled, sustained, slow