关键词: 双工作鞘, 经皮肾取石术

Abstract: 【Abstract】〓Objective〓To evaluate the efficacy and safety of double working sheath in the appli-cations of percutaneous nephrolithotomy(PCNL). Methods〓From January 2008 to November 2013, 1260 patients with kidney or ureteral calculi were treated by PCNL..All cases were carried out F20 channel. During the operations, an F16 or F18 working sheath were put in the F20 working sheath as an inner sheath on the concrete circumstances as needed..The stones were fragmented and removed through an 12F rigid nephroscope or 9.8 F rigid ureteroscope..Results〓All cases were successfully to carry out F20 channel..No one died of operation..Among them,.1192 operations were successful in first stage. Sixty-eight cases performed second stage operations. The average operation time was 53±8 min (12 to 120 min) in the first stage. The average operation time was 18±5 min (15 to 42 min) in the second stage. The total stone-free rate was 94.84% (1195/1260). 75 cases had middle to high fever temperature post-operation..Four patients had to undergo renal vascular interventional therapy for severe bleeding after PCNL..No serious complications such as pneumothorax and intestinal injury. Conclusion〓Double working sheath in the applications of PCNL is helpful to improve stone-free rate, shorten the operation time and reduce the surgical complications. This method is safe, effective and worthy of clinical promotion

Key words: Double working sheath, Percutaneous nephrolithotomy