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Next-Generation Single-Use Ureteroscopes: An In Vitro Comparison.

Westin R Tom1, Daniel A Wollin2, Ruiyang Jiang2

  • 11 Duke University School of Medicine , Durham, North Carolina.

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|October 6, 2017
PubMed
Summary

Two novel single-use flexible ureteroscopes, YC-FR-A and NeoFlex, show comparable performance to reusable models in optics, deflection, and irrigation. These single-use ureteroscopes may offer viable alternatives for urological procedures.

Keywords:
flexible ureteroscopymechanical evaluationoptics evaluationsingle-use ureteroscopyureteroscopy

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Area of Science:

  • Urology
  • Medical Devices
  • Endoscopy

Background:

  • Single-use flexible ureteroscopes are increasingly adopted in urology.
  • Evaluating novel single-use devices against established reusable ones is crucial for clinical adoption.

Purpose of the Study:

  • To compare the optical performance, deflection capabilities, and irrigation flow of two new single-use flexible ureteroscopes (YC-FR-A and NeoFlex) against contemporary reusable and single-use models.

Main Methods:

  • In vitro assessment of five flexible ureteroscopes (YC-FR-A, NeoFlex, LithoVue, Flex-Xc, Cobra).
  • Evaluation of image resolution, distortion, field of view, depth of field, color, and grayscale imaging.
  • Comparative analysis of ureteroscope deflection and irrigation rates.

Main Results:

  • Digital ureteroscopes demonstrated superior optical performance across all tested devices.
  • YC-FR-A exhibited high deflection but lacked two-way capability and showed significant loss with instruments; NeoFlex had comparable deflection to reusable scopes.
  • YC-FR-A provided the highest irrigation rate, while NeoFlex offered comparable flow to existing ureteroscopes.

Conclusions:

  • The YC-FR-A (fiberoptic) and NeoFlex (digital) single-use flexible ureteroscopes perform comparably to current reusable devices, presenting potential future alternatives.
  • Advancements in digital platforms and two-way deflection for single-use ureteroscopes are anticipated.
  • Further clinical validation is required for the growing range of single-use ureteroscope technologies.