环形镍钛合金支架在气管造口成形中起到了环状软骨样的支撑作用，有效地防止全喉切除术后气管造口狭窄的发生。
Application of circular nickel titanium alloy stent in tracheostomy, which exerts a supporting effect of cricoid cartilage, can effectively prevent the tracheostomal stenosis after total laryngectomy.
环形镍钛合金支架在气管造口成形中起到了环状软骨样的支撑作用，有效地防止全喉切除术后气管造口狭窄的发生。
Application of circular nickel titanium alloy stent in tracheostomy, which exerts a supporting effect of cricoid cartilage, can effectively prevent the tracheostomal stenosis after total laryngectomy.
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