An endotracheal device comprises an air tube adapted to be inserted through the oral or nasal passage and into the trachea to provide an air passage for respirating a patient. The air tube includes an inflatable cuff mounted at the distal end, and a membrane containing a cushioning material disposed...http://www.google.fr/patents/US4538606?utm_source=gb-gplus-shareBrevet US4538606 - Endotracheal tube
