THERAPEUTIC WOUND DRESSINGS WITH EXUDATE-DEPENDENT ENLARGEMENT OF APERTURES

摘要

A wound dressing comprising: a wound contacting sheet having a wound facing surface and a back surface opposite the wound facing surface, and having apertures therein that open or enlarge in the presence of wound exudate; and a plurality of particles comprising one or more therapeutic agents located behind the back surface of the back sheet, wherein the particles are able to pass through the apertures to the wound facing surface of the sheet when the apertures are opened or enlarged in the presence of said wound exudate.