An instrument access device (500) comprises a distal O-ring (11) for insertion into a wound interior, a proximal member for location externally of a wound opening and a sleeve (12) extending in two layers between the distal O-ring (11) and the proximal member. The proximal member comprises an inner proximal...http://www.google.es/patents/US20060247498?utm_source=gb-gplus-sharePatente US20060247498 - Instrument access device
Número de solicitud: 11/246,909 Número de publicación: US 2006/0247498 A1 Fecha de presentación: 11 Oct 2005 Patente emitida: US7998068 ( Fecha de emisión 16 Ago 2011)
