A gastro-laryngeal mask features softly compliant construction of the distal half of the mask, wherein the mask is of generally elliptical configuration, with an inflatable peripheral cuff to seal and support the mask around the laryngeal inlet. A back cushion is inflatable to engage the back wall of...http://www.google.es/patents/US5878745?utm_source=gb-gplus-sharePatente US5878745 - Gastro-laryngeal mask
