A method of and apparatus for performing endoscopic or laparoscopic surgery on a patient's spine is provided. The apparatus includes a trochar which is specifically design for spinal applications. The trochar includes of a first transparent tubular member of a predetermined diameter and a second transparent...http://www.google.fr/patents/US5569290?utm_source=gb-gplus-shareBrevet US5569290 - Method of and apparatus for laparoscopic or endoscopic spinal surgery using an unsealed anteriorly inserted transparent trochar
Method of and apparatus for laparoscopic or endoscopic spinal surgery using ...
