A method according to one embodiment for maintaining patency of an opening inside the human body comprises introducing a radially self-expanding hollow stent into the opening through an endoscope that radially compresses the stent, wherein the stent has enlarged ends and a reduced intermediate portion....http://www.google.fr/patents/US20070179426?utm_source=gb-gplus-shareBrevet US20070179426 - Interfacial stent and method of maintaining patency of surgical fenestrations
Interfacial stent and method of maintaining patency of surgical fenestrations
