Department of Urology, Guizhou Provincial People’s Hospital, Guiyang, 550002, China
Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
Urol J. 2020 May 14;18(2):160-164. doi: 10.22037/uj.v0i0.5584.
NTrap® stone entrapment and extraction device (NTrap®) is a device used to extract and remove stones from the urinary tract and to minimize retrograde stone migration during ureterolithotripsy (URS). This study aimed to evaluate the efficacy and safety of NTrap® in URS.
From Jan 2014 to June 2017, 148 patients underwent URS with the aid of NTrap® (Group A), and 209 patients underwent standard URS without any anti-retropulsion device (Group B). Their demographics, operation time, complications, stone migration rate, and stone-free rate (SFR) were recorded for comparison.
Compared with group B, Group A had a significantly shorter operative and lasering time (P = 0.003, P<0.001, respectively). There was no significant difference between the 2 groups in overall complications, a decrease in mean hemoglobin, and length of stay (LOS) (P = 0.426, P = 0.097, P = 0.058, respectively). The incidence of stone migration was significantly lower in Group A than Group B (P = 0.035). The postoperative auxiliary procedure rate (in patients with stones retropulsion during the operation) was significantly lower in Group A compared to Group B (P = 0.024). The SFR was considerably higher in Group A than Group B (P = 0.009).
URS, with the aid of NTrap®, is an effective and safe method for treating ureteric stones. It may prevent stones from retropulsion and shorten the operative time.
NTrap® 结石捕捉和提取装置（NTrap®）是一种用于从泌尿道中提取和去除结石并最大限度减少输尿管镜碎石术（URS）期间逆行结石迁移的装置。本研究旨在评估 NTrap® 在 URS 中的疗效和安全性。
从 2014 年 1 月至 2017 年 6 月，148 例患者接受了 NTrap®辅助 URS（A 组），209 例患者接受了无任何抗反流装置的标准 URS（B 组）。记录他们的人口统计学、手术时间、并发症、结石迁移率和结石清除率（SFR）进行比较。
与 B 组相比，A 组的手术和激光时间明显缩短（P = 0.003，P<0.001）。两组的总并发症发生率、平均血红蛋白下降和住院时间（LOS）无显著差异（P = 0.426，P = 0.097，P = 0.058）。A 组的结石迁移发生率明显低于 B 组（P = 0.035）。A 组术中结石反流患者的辅助治疗率明显低于 B 组（P = 0.024）。A 组的 SFR 明显高于 B 组（P = 0.009）。
URS 联合 NTrap® 是治疗输尿管结石的有效、安全的方法。它可以防止结石逆行，并缩短手术时间。
