A mandibular protracting oral intubating airway has a rigid main body with a mouthpiece portion at the forward end. The mouthpiece portion has an annular front flange and a bite portion extending a short distance rearwardly therefrom which is generally oval-shaped in transverse cross section and has...http://www.google.se/patents/US5590643?utm_source=gb-gplus-sharePatent US5590643 - Mandibular protracting oral intubating airway
