| 摘要 |
Two tubes of flexible, resilient transparent material are introduced side-by-side into the oral cavity. The distal ends of the tubes are longitudinally spaced, so that the more remote end will enter either the esophagus or larynx before the more proximate distal end enters either passageway. A cuff adjacent the more remote distal end is inflated to seal the tube in the passageway. A collar is placed at the mouth and seals the tube at the mouth and is retained in place. A nose clip seals the nasal cavity. Air is introduced to the uncuffed tube. If it is thereby supplied to the trachea, ventilation is continued through that tube. If air is not thereby supplied to the trachea, air is supplied to the cuffed tube, which has entered the trachea, and ventilation is thereupon provided to that tube. Aspiration or administration of material can be provided through whichever tube is not supplying air to the trachea. |
