A system for accessing a desired site within a patient's body includes a cannula defining an inner lumen that opens into a longitudinally extending side aperture formed in the side of the cannula, near its distal end. An electrosurgical stylet slidably fits inside the inner lumen. At the distal end of...http://www.google.se/patents/US6471700?utm_source=gb-gplus-sharePatent US6471700 - Apparatus and method for accessing biopsy site
