A laser smoke evacuation system and method for laser smoke removal from the site of laser laparoscopy in a patient cavity. The system includes a CO.sub.2 gas pump connected through a control valve, a pressure sensor, and a bacterial filter to a laparoscopic tube inserted into the patient, a return line...http://www.google.es/patents/US4735603?utm_source=gb-gplus-sharePatente US4735603 - Laser smoke evacuation system and method
