Described are devices, methods, and systems useful in the treatment of fistulae, and in certain embodiments those having openings extending into the alimentary canal, such as anorectal fistulae. Illustratively, an anorectal fistula can be treated by placing a volumetric construct within the primary opening...http://www.google.de/patents/US20080004657?utm_source=gb-gplus-sharePatent US20080004657 - Volumetric grafts for treatment of fistulae and related methods and systems
