重症呼吸衰竭患者常需机械通气治疗，而及时建立人工气过是机械通气治疗的先决条件。以往经口气管插管建立人工气道由于创伤性大，又不宜长期保留，且清醒患者难以耐受，故仅应用于紧急情况。而气管切开则因创伤性更大，易造成气管狭窄，且不能重复进行。为此，作者于1993年起 Severe respiratory failure patients often require mechanical ventilation, and the establishment of artificial air over time is a prerequisite for mechanical ventilation. Tracheal intubation in the past to establish artificial airway due to traumatic, but also not long-term retention, and awake patients difficult to tolerate, it is only used in emergency situations. Tracheotomy due to greater trauma, can easily lead to tracheal stenosis, and can not be repeated. To this end, the author since 1993