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Related Experiment Videos

Durability of flexible ureteroscopes: a randomized, prospective study.

Manoj Monga1, Sara Best, Ramakrishna Venkatesh

  • 1Department of Urology, Veterans Affairs Health Care System Minneapolis, and Department of Urology, University of Minnesota, 520 Delaware Street, Minneapolis, MN 55455, USA. endourol@yahoo.com

The Journal of Urology
|June 7, 2006
PubMed
Summary

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This study evaluated flexible ureteroscope durability, finding that the ACMI DUR-8 Elite and Olympus URF-P3 demonstrated superior resilience. These findings are crucial for urologists selecting durable instruments for minimally invasive kidney stone procedures.

Area of Science:

  • Urology
  • Medical Devices
  • Minimally Invasive Surgery

Background:

  • Flexible ureteroscopes are essential tools in modern urology for treating upper tract calculi.
  • Assessing the durability of these devices is critical for optimizing surgical outcomes and managing costs.

Purpose of the Study:

  • To evaluate the durability of commercially available flexible ureteroscopes (less than 9Fr) in a prospective, multi-institutional setting.
  • To compare the performance and longevity of different flexible ureteroscope models under clinical use.

Main Methods:

  • A randomized study involving 192 patients and 7 different flexible ureteroscope models (<9Fr).
  • Data collected included total and lower pole use time, insertion methods, and accessory instrument usage.
  • Surgeons provided subjective ratings for visibility and maneuverability.

Related Experiment Videos

Main Results:

  • The ACMI DUR-8 Elite and Olympus URF-P3 showed greater durability, requiring repair after more cases compared to other models.
  • The Olympus URF-P3 experienced the longest average duration of lower pole use, while the Wolf 7325 had the shortest.
  • The ACMI DUR-8 Elite demonstrated longer average laser use time before breakage.

Conclusions:

  • Commercially available flexible ureteroscopes (<9Fr) are generally fragile instruments.
  • The ACMI DUR-8 Elite and Olympus URF-P3 emerged as the most durable flexible ureteroscope models in this study.