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1·Objective To investigate the clinical effect and nursing strategic of percutaneous dilation trachea cannula (PDT).

目的探讨经皮气管置管术(PDT)的临床疗效及护理对策。

2·However, trachea cannula exodus of terylene tandem ring alloy composite artificial esophagus in middle and late phases cannot be fully solved.

但带涤纶连接环记忆合金组合式人工食管还存在中晚期脱管的问题未能完全解决。

3·OBJECTIVE: to explore the role of the tube structure changes in Nitinol alloy composite artificial esophagus to prevent trachea cannula exodus.

目的：观察改变镍钛合金组合式人工食管的管体结构在防止脱管中的作用。