[Nitinol alloy endotracheal stent used in treatment of tracheal stenosis: experimental and clinical applications].
A new method used in treatment of tracheal stenosis by means of nitinol alloy intraluminal tracheal stent (Ni-Ti ITS) is introduced. Altogether 7 stents were implanted into tracheas of 7 mongrels each with a model of tracheal stenosis. The observation periods ranged from 2 to 6 months. The experimental results showed: The Ni-Ti ITSs could maintain long term patency without severe infection or obstruction by granulations or secretion. No displacement was found. There were no signs of either generalized or localized corrosion on the surface of stents. The shape memory character remained unchanged. On the basis of animal experimental study, the stents were successfully used in treatment of 2 patients with tracheal stenosis. One was caused by advanced tracheal tumor, the other was due to recurrent anastomotic stricture.
Liu
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General Hospital of People's Liberation Army, Beijing.
D000328:Adult; D000497:Alloys; D000818:Animals; D004285:Dogs; D005260:Female; D006801:Humans; D008297:Male; D009532:Nickel; D015607:Stents; D014025:Titanium; D014135:Tracheal Stenosis / Q000628:therapy*
D000497:Alloys; C013616:nitinol; D009532:Nickel; D014025:Titanium