An endotracheal assembly comprises an endotracheal tube, a malleable obturator inside the tube for enabling a placement of a distal end of the tube into a patient's trachea, and a pressure-sensitive detector mounted to the obturator at a distal end thereof for detecting air or gas pressure above a predetermined...http://www.google.com.au/patents/US5421325?utm_source=gb-gplus-sharePatent US5421325 - Endotracheal tube assembly and related method
