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Flexible and navigable suction access sheaths: balancing sheath and scope size for desired flows

Richard Menzies-Wilson1, Jessica Williams2, Thijs Ruiken1

  • 1Nuffield Department of Surgery, University of Oxford, Oxford, UK.

BJU International
|September 26, 2025
PubMed
Summary

Flexible and navigable suction (FANS) access sheaths allow higher irrigation pressures and flow rates during ureteroscopy while maintaining low intrarenal pressure (IRP). This technique, without suction, can significantly increase fluid flow compared to gravity irrigation.

Keywords:
flexible and navigable suction access sheaths (FANS)intrarenal pressure (IRP)irrigation pressureoutflow resistanceureteroscope

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