Lee B H, Do Y S, Lee J H, Kim K H, Chin S Y
Department of Diagnostic Radiology, Korea Cancer Center Hospital, Gongneung-dong, Nowon-gu, Seoul.
J Vasc Interv Radiol. 1995 Jul-Aug;6(4):635-40. doi: 10.1016/s1051-0443(95)71151-4.
To describe a new self-expandable spiral-shaped metallic stent and to evaluate its clinical efficacy in malignant biliary obstructions.
The stent was made of a 0.01-inch (0.25-mm) stainless steel wire bent in a zigzag pattern and was formed into a spiral configuration by differing the length of legs on each bend. One revolution was composed of 10 bends, and the stent was longitudinally connected by hanging each bending point of abutting bends, without use of suture or silver solder. Twenty-six stents were placed to relieve malignant biliary obstruction in 18 patients. Follow-up of 5-11 months (mean, 7 months) was obtained.
All stents were placed in the desired location, and no procedural complications were encountered. Within 1 week after placement, all stents regained 90% or more of their original diameters. Five patients died (range, 5-36 weeks), and 13 patients are still alive (range, 20-45 weeks). Two patients experienced recurrent jaundice and underwent further treatment. The stent was easily inserted, expanded well, was flexible, could be repositioned, and did not shorten.
Favorable clinical results were obtained with this spiral stent in malignant biliary obstruction, and further clinical testing is warranted.
描述一种新型自膨胀螺旋形金属支架，并评估其在恶性胆管梗阻中的临床疗效。
该支架由一根0.01英寸（0.25毫米）的不锈钢丝制成，呈锯齿状弯曲，并通过改变每个弯曲处腿的长度形成螺旋结构。一圈由10个弯曲组成，支架通过悬挂相邻弯曲的每个弯曲点纵向连接，无需使用缝线或银焊。对18例患者置入26枚支架以缓解恶性胆管梗阻。获得了5至11个月（平均7个月）的随访结果。
所有支架均放置在理想位置，未出现操作并发症。置入后1周内，所有支架恢复至其原始直径的90%或以上。5例患者死亡（5至36周），13例患者仍存活（20至45周）。2例患者出现复发性黄疸并接受了进一步治疗。该支架易于插入，扩张良好，柔韧性好，可重新定位，且不会缩短。
这种螺旋支架在恶性胆管梗阻中取得了良好的临床效果，值得进一步进行临床试验。
