It consists of a cuffed, double-lumen tube that is inserted through the patient's mouth to secure an airway and enable ventilation.

Inflation of the cuff in the esophagus allows a level of protection against aspiration of gastric content similar to that found in the laryngeal mask.

The Combitube's ease of use makes it an option for use in the pre-hospital, emergency setting when advanced level providers capable of placing an endotracheal tube are not immediately available.

The drawbacks of Combitubes are evidenced by reports of serious complications such as aspiration, esophagus perforation[3] and cranial nerve dysfunction[1] associated with their use.

While it has been suggested as an option by the American Heart Association and European Resuscitation Council for situations where intubation attempts are unsuccessful since the year 2000,[4] it is seldom used outside of the pre-hospital, emergency setting, as it does not allow for long term airway control.