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Related Experiment Videos

Techniques to maximize flexible ureteroscope longevity.

Paul K Pietrow1, Brian K Auge, Fernando C Delvecchio

  • 1Comprehensive Kidney Stone Center, Division of Urology, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA.

Urology
|November 14, 2002
PubMed
Summary
This summary is machine-generated.

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New ureteroscopic accessories significantly extend the life of flexible ureteroscopes. Using tools like ureteral access sheaths and nitinol devices improves instrument durability for stone treatment and other procedures.

Area of Science:

  • Urology
  • Medical Device Engineering

Background:

  • Flexible ureteroscopes are increasingly used for upper urinary tract conditions.
  • Smaller endoscope sizes lead to inevitable damage after repeated use.
  • New auxiliary tools may enhance ureteroscope durability.

Purpose of the Study:

  • To assess methods to improve the longevity and durability of flexible ureteroscopes.
  • Evaluate the impact of ureteral access sheath, 200-microm holmium laser fiber, and nitinol baskets/graspers.

Main Methods:

  • Prospective evaluation of four new 7.5F flexible ureteroscopes.
  • Procedures included stone treatment, tumor ablation, and stricture management.
  • Monitored optical fiber breakage, loss of deflection, and instrument repair.

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Main Results:

  • Average 27.5 procedures per instrument before repair.
  • Ureteral access sheath used in all cases (n=109).
  • Nitinol devices (n=27) and 200-microm holmium laser fiber (n=91) were utilized.

Conclusions:

  • Incorporating ureteroscopic accessories maximizes endoscope longevity.
  • Average procedures before repair increased significantly compared to historical data (66.7 vs. 6-15).
  • These adjuncts reduce strain on fragile 7.5F endoscopes.