Lee Moung Jin, Lee Seung Tae, Min Seung Ki
Department of Urology, National Police Hospital, Seoul, Korea.
Korean J Urol. 2010 Oct;51(10):719-23. doi: 10.4111/kju.2010.51.10.719. Epub 2010 Oct 21.
This study aimed to determine the value of the NTrap® (Cook Urological INC, USA), which was designed to block the upward movement of stones during ureteroscopic lithotripsy.
We reviewed the data of 144 patients who underwent ureteroscopic lithotripsy for an upper ureteral stone from June 2006 to May 2010. Sixty-eight patients who underwent ureteroscopic lithotripsy without the use of the NTrap® were assigned to Group I and 76 patients who underwent ureteroscopic lithotripsy with the NTrap® were assigned to Group II. The size of the stones, operation time, success rate, and pre- and postoperative complications were compared retrospectively between the two groups.
THE MEAN AGE OF THE PATIENTS (GROUP I: 35.8 years; Group II: 32.6 years) and the sex ratios were not significantly different between the two groups. The mean size of the stones was 6.9 mm and 7.4 mm, which also was not significantly different between the two groups. The mean operation time was 82.7 minutes and 78.7 minutes. The operation time was shorter in Group II, but the difference was not significant. The success rate of stone removal was 89.7% and 98.7% in Groups I and II, respectively; Group II showed a significantly higher success rate. Two cases of ureteral perforation and one case of ureteral avulsion occurred in Group I, and one case of ureteral perforation occurred in Group II.
NTrap®, which is an instrument used to assist during ureteroscopic lithotripsy, can be considered to be an effective tool that blocks the upward movement of the stone and aids in safe stone removal.
本研究旨在确定NTrap®（美国库克泌尿外科公司）的价值，该产品旨在在输尿管镜碎石术中阻止结石向上移动。
我们回顾了2006年6月至2010年5月期间因输尿管上段结石接受输尿管镜碎石术的144例患者的数据。将68例未使用NTrap®进行输尿管镜碎石术的患者分为第一组，将76例使用NTrap®进行输尿管镜碎石术的患者分为第二组。回顾性比较两组患者的结石大小、手术时间、成功率以及术前和术后并发症。
两组患者的平均年龄（第一组：35.8岁；第二组：32.6岁）和性别比例无显著差异。结石的平均大小分别为6.9 mm和7.4 mm，两组之间也无显著差异。平均手术时间分别为82.7分钟和78.7分钟。第二组的手术时间较短，但差异不显著。第一组和第二组的结石清除成功率分别为89.7%和98.7%；第二组的成功率显著更高。第一组发生2例输尿管穿孔和1例输尿管撕脱，第二组发生1例输尿管穿孔。
NTrap®是一种在输尿管镜碎石术中辅助使用的器械，可被认为是一种有效的工具，能够阻止结石向上移动并有助于安全地清除结石。
