Gu W Q
General Hospital of People's Liberation Army, Beijing.
Zhonghua Wai Ke Za Zhi. 1993 May;31(5):260-3.
A new design of endoprosthesis, made of shape-memory nitinol alloy, was used to replace the currently used one, which was soon clogged with bile mud. After nitinol wire coil stent was slenderized in ice water, it was inserted into the strictured bile duct by endoscopy or operation. When nitinol wire coil was positioned in a narrowed biliary segment, normal saline heated to 39 degrees C was rapidly hand-injected into the lumen of the inner transport catheter to make the alloy coil to resume its original shape with a length of 3 to 10cm, and a diameter of 5 to 10mm. Since June 1991, 13 patients with malignant biliary strictures were treated with nitinol endoprosthesis. The follow-up period ranged from 1 to 16 months (average 6 months). Biliary sludge was not found in the endoprosthesis during the period. The results suggested that shape-memory nitinol alloy endoprosthesis could maintain long term patency without severe infection or obstruction due to biliary sludge.
一种由形状记忆镍钛诺合金制成的新型内置假体被用于替代目前使用的、很快就会被胆泥堵塞的内置假体。镍钛诺丝线圈支架在冰水中变细后，通过内镜或手术插入狭窄的胆管。当镍钛诺丝线圈放置在狭窄的胆管段时，将加热至39摄氏度的生理盐水快速手动注入内部输送导管的管腔，使合金线圈恢复其原始形状，长度为3至10厘米，直径为5至10毫米。自1991年6月以来，13例恶性胆管狭窄患者接受了镍钛诺内置假体治疗。随访期为1至16个月（平均6个月）。在此期间，内置假体中未发现胆泥。结果表明，形状记忆镍钛诺合金内置假体可长期保持通畅，不会因胆泥而出现严重感染或梗阻。
