Combitube /kom′bit(y)o̅o̅b/ , a double-lumen tube with inflatable balloon cuffs that seal off the hypopharynx from the oropharynx and esophagus, used for airway management. It is inserted blindly, entering either the esophagus or trachea. If it enters the esophagus, one lumen, which has a blind distal end and side holes, functions as an esophageal obturator airway. If it enters the trachea, the other lumen, which has an open distal end, functions as a standard cuffed endotracheal tube.
