Platinum open access journal
pISSN 2466-0493 eISSN 2466-054X
Indexed in MEDLINE, SCIE, Scopus, DOAJ and more
    Korean J Urol. 2007 Nov;48(11):1161-1164. Korean.
    Published online Nov 30, 2007.
    https://doi.org/10.4111/kju.2007.48.11.1161
    Copyright © 2007 The Korean Urological Association
    Original Article

    Efficacy of the NTrap® for the Treatment of Ureteral Stone: An Initial Clinical Experience

    Dong Joon Han, Hyung Yoon Moon, and Chul Sung Kim
      • Department of Urology, College of Medicine, Chosun University, Gwangju, Korea.
    • Corresponding author (Email: mu-hn@hanmail.net )
    Received July 06, 2007; Accepted September 18, 2007.

    Abstract

    Purpose

    Retrograde migration of stone fragments is common when performing lithotripsy. A new device, the NTrap®, is a device that prevents stone migration and it extracts calculi and other foreign bodies in the urinary tract. The aim of this study was to assess the efficacy and safety of ureteroscopic stone removal by using the NTrap®.

    Materials and Methods

    From January 2006 to December 2006, 64 consecutive patients underwent endoscopic lithotripsy by using the NTrap®, rigid ureteroscopy (8.6Fr) and pneumatic lithoclast. We analyzed the success rate of stone removal and the complication rate.

    Results

    The mean stone size and mean operation time were 9.36mm and 32 minutes, respectively. The overall stone-free rate was 100% and no patient had residual fragments greater than 3mm and they didn't require auxiliary treatment. The most common complications were gross hematuria and pain.

    Conclusions

    The NTrap® is new ureteroscopic instrument that's a highly effective, safe modality for the treatment of ureteral stone.

    Keywords
    Ntrap; Ureteroscopy; Ureteral calculi

    Figures

    Fig. 1
    Gross finding of the NTrap®.

    Fig. 2
    After successful fragmentation of the stone, the NTrap® is utilized to entrap the remaining stone fragments for extraction.

    References

      1. Singal RK, Denstedt JD. Contemporary management of ureteral stones. Urol Clin North Am 1984;23:59–66.
      1. Netto Junior NR, Claro JF, Lemos GC, Cortado PL. Treatment options for ureteral calculi: endourology or extracorporeal shock wave lithotripsy. J Urol 1991;146:5–7.
      1. Higashihara E, Horie S, Takeuchi T, Kameyama S, Asakage Y, Hosaka Y, et al. Laser ureterolithotripsy with combined rigid and flexible ureterorenoscopy. J Urol 1990;143:273–274.
      1. Dretler SP. An evaluation of ureteral laser lithotripsy: 225 consecutive patients. J Urol 1990;143:267–272.
      1. Holley PG, Sharma SK, Perry KT, Turk TM. Assessment of novel ureteral occlusion device and comparison with stone cone in prevention of stone fragment migration during lithotripsy. J Endourol 2005;19:200–203.
      1. Bagley DH, Kuo RL, Zeltser IS. An update on ureteroscopic instrumentation for the treatment of urolithiasis. Curr Opin Urol 2004;14:99–106.
      1. Ouwenga MK, Sharma SK, Holley P, Turk TM, Perry KT. Load-release points of two novel ureteral stone-trapping devices. J Endourol 2005;19:894–897.
      1. Chaussy C, Schmiedt E, Jocham D, Brendel W, Forssmann B, Walther V. First clinical experience with extracorporeally induced destruction of kidney stone by shock waves. J Urol 1982;127:417–420.
      1. Politis G, Griffith DP. ESWL. Stone-free efficacy based upon stone size and location. World J Urol 1987;5:225–228.
      1. Yaycioglu O, Guvel S, Kilinc F, Egilmez T, Ozkardes H. Results with 7.5F versus 10F rigid ureteroscopes in treatment of ureteral calculi. Urology 2004;64:643–647.
      1. Schulze H, Haupt G, Piergiovanni M, Wisard M, von Niederhausern W, Senge T. The Swiss Lithoclast: a new device for endoscopic stone disintegration. J Urol 1993;149:15–18.
      1. Denstedt JD. Use of the Swiss Lithoclast for percutaneous nephrolithotripsy. J Endourol 1993;7:477–480.
      1. Lee KW, Lee TY, Woo YN. The experience of ureterorenoscopic lithotripsy with insertion of ureterorenoscope between two safety guide wires serving as an access port. Korean J Urol 2003;44:221–226.
      1. Lee YK, Park DS, Hong YK. Ureteroscopic lithotripsy with pneumatic lithotriptor: 274 cases. Korean J Urol 2006;47:625–630.
      1. Chung HS, Park JY, Kim HK, Park CM. Efficacy of Stone Cone for treatment of proximal ureteral stones: an initial clinical experience. Korean J Urol 2006;47:412–417.
      1. Holley PG, Sharma SK, Perry KT, Turk TM. Assessment of novel ureteral occlusion device and comparison with Stone Cone in prevention of stone fragment migration during lithotripsy. J Endourol 2005;19:200–203.
    Cited by
    Crossref 6
    Google Scholar 
    Scopus 5
    MeSH Terms
    Calculi
    Foreign Bodies
    Hematuria
    Humans
    Lithotripsy
    Ureter*
    Ureteral Calculi
    Ureteroscopy
    Urinary Tract
    Metrics
    Share
    Figures
    slide
    slide

    1 / 2

    PERMALINK