US Patent 9265905 Stopper device

An airway [(10, 310, 410, 510, 610, 710, 810, 1110, 1210, 1310, 1410, 1510, 1610, 710, 1810, 2010, 2110, 2210, 2310, 2410, 2510, 2610, 2710, 2810, 2910, 3010, 3110, 3210, 3310, 3810) device for human or animal use, the device includes an airway tube (12) having a first end (14) and a second end (16), wherein the device further includes a shoulder (26), the shoulder extends laterally from and substantially perpendicular to the airway tube, the shoulder is adapted to contact the faucial pillars of the human or animal patient to prevent over-insertion of the device in use.