gs or other materials, performance of medical and surgical procedures, and introducing...http://www.google.com/patents/US7846088?utm_source=gb-gplus-sharePatent US7846088 - Instruments and methods for accessing an anatomic spaceAdvanced Patent SearchPublication numberUS7846088 B2Publication typeGrantApplication numberUS 11/520,238Publication dateDec 7, 2010Filing dateSep 13, 2006Priority dateFeb 1