AIRWAY FOR PHARYNGEAL CAVITY

摘要

A pharyngeal airway tube, without inserting any foreign matters in the trachea (T), can be easily inserted through the oral cavity (O) in the lower pharynx (P), and is capable of hermetically sealing a transitional region from the lower pharynx to the esophagus (E) and the periphery of the laryngeal opening (AL) to secure an airway for positive pressure artificial ventilation. The pharyngeal airway comprises an airway tube (1) having a closed, round distal end and provided in its side wall with ventilating holes (2), and a balloon (3) attached to the edge of the ventilating part and around the ventilating part of the airway tube and capable of being inflated so as to surround a part of theairway tube near the distal end of the same. A small bore gas passage (4) is formed in the wall of the airway tube so as to open into the balloon, and a small bore tube (5) fitted with a connector(7) is connected to the proximal end of the gas passage.