A structure for receiving surgical instruments for performing a surgical procedure on a body includes a passage through which the surgical instruments are inserted into the body. The passage has a proximal end and a distal end. An expandable portion enables an increase in the cross-sectional area of...http://www.google.es/patents/US20030153927?utm_source=gb-gplus-sharePatente US20030153927 - Structure for receiving surgical instruments
Número de solicitud: 10/361,887 Número de publicación: US 2003/0153927 A1 Fecha de presentación: 10 Feb 2003 Patente emitida: US7144393 ( Fecha de emisión 5 Dic 2006)
