Methods In this serial, the displaced upper gastrointestinal tract Nickel-Titanium alligation stent was retivere/reset in 17 cases, 18 times.

• 方法本组采用自行研制的上消化道镍钛合金支架取出器共进行了17例，18例次移位的上消化道镍钛合金支架的回收或重置。