Efficacy and Safety of NTrap® Stone Entrapment and Extraction Device for Ureteroscopic Lithotripsy
Vol. 18 No. 02 (2021),
Purpose: 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.
Methods: 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.
Results: 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).
Conclusion: 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.
- Ureteroscopic lithotripsy
- Ureteric stones
- Stone free rate
How to Cite
Hollenbeck B, K., Schuster T, G. , Faerber G, J . , Wolf J, Jr . . Comparison of outcomes of ureteroscopy for ureteral calculi located above and below the pelvic brim. Urology. 2001;58:351-6.
Lam JS GT, Gupta M. Treatment of proximal ureteral calculi: holmium:YAG laser ureterolithotripsy versus extracorporeal shock wave lithotripsy. J Urol. 2002;167:1972-6.
Ho A, Sarmah P, Bres-Niewada E, Somani BK. Ureteroscopy for stone disease: expanding roles in the modern era. Cent European J Urol. 2017;70:175-8.
Desai MR PS, Desai MM, Kukreja R, Sabnis RB, Desai RM, Patel SH. The Dretler stone cone: a device to prevent ureteral stone migration-the initial clinical experience. J Urol. 2002;167:1985-8.
Lee MJ, Lee ST, Min SK. Use of NTrap(R) during Ureteroscopic Lithotripsy for Upper Ureteral Stones. Korean J Urol. 2010;51:719-23.
Tunc L, Kupeli B, Senocak C, et al. Pneumatic lithotripsy for large ureteral stones: is it the first line treatment? Int Urol Nephrol. 2007;39:759-64.
Knispel HH KR, Heicappell R, Miller K. Pneumatic lithotripsy applied through deflected working channel of miniureteroscope: results in 143 patients. J Endourol. 1998;12:513-5.
Cimino S FV, Russo GI, Saita A, Sortino G, Castelli T, Veroux M, Madonia M, Morgia G. Pneumatic lithotripsy versus holmium:YAG laser lithotripsy for the treatment of single ureteral stones: a prospective, single-blinded study. Urol Int. 2014;92:468-72.
Zehri AA, Ather MH, Siddiqui KM, Sulaiman MN. A randomized clinical trial of lidocaine jelly for prevention of inadvertent retrograde stone migration during pneumatic lithotripsy of ureteral stone. J Urol. 2008;180:966-8.
Ali AA, Ali ZA, Halstead JC, Yousaf MW, Ewah P. A novel method to prevent retrograde displacement of ureteric calculi during intracorporeal lithotripsy. BJU Int. 2004;94:441-2.
Mohseni MG, Arasteh S, Alizadeh F. Preventing retrograde stone displacement during pneumatic lithotripsy for ureteral calculi using lidocaine jelly. Urology. 2006;68:505-7.
Delvecchio FC KR, Preminger GM. Clinical efficacy of combined lithoclast and lithovac stone removal during ureteroscopy. J Urol. 2000;164:40-2.
Kesler SS, Pierre SA, Brison DI, Preminger GM, Munver R. Use of the Escape nitinol stone retrieval basket facilitates fragmentation and extraction of ureteral and renal calculi: a pilot study. J Endourol. 2008;22:1213-7.
Feng CC, Wu Z, Jiang HW, Ding Q. A new stone occlusion device for upper ureteral calculi: preliminary clinical outcomes. Minim Invasive Ther Allied Technol. 2012;21:351-4.
Sanguedolce F, Montanari E, Alvarez-Maestro M, et al. Use of XenX, the latest ureteric occlusion device with guide wire utility: results from a prospective multicentric comparative study. World J Urol. 2016;34:1583-9.
Ahmed M, Pedro RN, Kieley S, Akornor JW, Durfee WK, Monga M. Systematic evaluation of ureteral occlusion devices: insertion, deployment, stone migration, and extraction. Urology. 2009;73:976-80.
Ding H, Wang Z, Du W, Zhang H. NTrap in prevention of stone migration during ureteroscopic lithotripsy for proximal ureteral stones: a meta-analysis. J Endourol. 2012;26:130-4.
Feng C, Ding Q, Jiang H, et al. Use of NTrap during ureteroscopic Holmium:YAG laser lithotripsy of upper ureteral calculi. Minim Invasive Ther Allied Technol. 2012;21:78-82.
Maislos SD VM, Albert PS, Raboy A. Efficacy of the Stone Cone for treatment of proximal ureteral stones. J Endourol. 2004;18:862-4.
Shabana W TM, Dawod T. Safety and efficacy of using the stone cone and an entrapment and extraction device in ureteroscopic lithotripsy for ureteric stones. Arab Journal of Urology. 2015;13:75-9.
Dretler SP. The stone cone: a new generation of basketry. J Urol. 2001;165:1593-6.
Springhart WP, Tan YH, Albala DM, Perelman J, Teichman JM, Preminger GM. Use of Stone Cone minimizes stone migration during percutaneous nephrolithotomy. Urology. 2006;67:1066-8.
Wang CJ, Huang SW, Chang CH. Randomized trial of NTrap for proximal ureteral stones. Urology. 2011;77:553-7.
Kadyan B, Sabale V, Mane D, et al. Large proximal ureteral stones: Ideal treatment modality? Urol Ann. 2016;8:189-92.
Turk C, Petrik A, Sarica K, et al. EAU Guidelines on Interventional Treatment for Urolithiasis. Eur Urol. 2016;69:475-82.
Zheng W, Denstedt JD. Intracorporeal lithotripsy. Update on technology. Urol Clin North Am. 2000;27:301-13.
Osorio L, Lima E, Soares J, et al. Emergency ureteroscopic management of ureteral stones: why not? Urology. 2007;69:27-31; discussion -3.
Leveillee RJ, Lobik L. Intracorporeal lithotripsy: which modality is best? Curr Opin Urol. 2003;13:249-53.
Dretler SP. Ureteroscopy for proximal ureteral calculi: prevention of stone migration. J Endourol. 2000;14:565-7.
Pardalidis NP, Papatsoris AG, Kosmaoglou EV. Prevention of retrograde calculus migration with the Stone Cone. Urol Res. 2005;33:61-4.
Olbert PJ, Keil C, Weber J, Schrader AJ, Hegele A, Hofmann R. Efficacy and safety of the Accordion stone-trapping device: in vitro results from an artificial ureterolithotripsy model. Urol Res. 2010;38:41-6.
Ouwenga MK, Sharma SK, Holley PG, Turk TM, Perry KT. Load-release points of two novel ureteral stone-trapping devices. J Endourol. 2005;19:894-7.
- Abstract Viewed: 84 times
- 5584-pdf Downloaded: 29 times