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Related Experiment Videos

Improved functional deflection with a dual-deflection flexible ureteroscope.

Oleg Shvarts1, Kent T Perry, Ben Goff

  • 1Department of Urology, UCLA School of Medicine, Los Angeles, California, USA.

Journal of Endourology
|April 10, 2004
PubMed
Summary

A new dual-deflection ureteroscope offers superior active deflection compared to standard models. This enhanced maneuverability aids in managing complex kidney stones, potentially reducing the need for more invasive procedures.

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Area of Science:

  • Urology
  • Medical Devices
  • Endoscopy

Background:

  • Flexible ureteroscopes are crucial for diagnosing and treating upper urinary tract conditions.
  • Current single-deflection scopes have limitations in accessing difficult anatomical locations.
  • Advancements in ureteroscope design aim to improve maneuverability and treatment efficacy.

Purpose of the Study:

  • To compare the maximal active deflection capabilities of a novel dual-deflection ureteroscope.
  • To evaluate the performance of the dual-deflection ureteroscope against a standard single-deflection ureteroscope.

Main Methods:

  • Maximal deflection angles were measured for a dual-deflection ureteroscope and a standard single-deflection ureteroscope.
  • Deflection was assessed with an empty working channel and with various instruments (laser fibers, Nitinol basket).

Related Experiment Videos

  • The dual-deflection scope features an additional proximal deflection point for enhanced control.

    • Main Results:

    • The dual-deflection ureteroscope achieved a superior maximum active deflection of 234.3 degrees versus 143 degrees for the standard scope.
    • The dual-deflection scope, utilizing both deflection points, maintained significant maneuverability even with larger instruments in the working channel.
    • Instrument insertion caused less dampening of deflection in the dual-deflection scope compared to the single-deflection scope.

    Conclusions:

    • The dual-deflection ureteroscope demonstrates significantly greater active deflection capabilities.
    • Its design allows for the use of larger working instruments with minimal impact on deflection, enhancing its utility.
    • This device shows promise for treating challenging lower-pole renal calculi and may expand ureteroscopic treatment options, potentially avoiding percutaneous procedures.