Fiber-optic EFPI pressure sensors for In Vivo urodynamic analysis

Sven Poeggel, Daniele Tosi, Fernando Fusco, Juliet Ippolito, Laura Lupoli, Vincenzo Mirone, Simone Sannino, Gabriel Leen, Elfed Lewis

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


A fiber optic sensing system for pressure measurement in invasive urodynamics is presented and experimentally validated. Probes are based on extrinsic Fabry-Perot interferometry (EFPI) principle, with an all-glass biocompatible design having 0.2-mm thickness. Pressure sensitivity of 1.0-1.6 nm/kPa with high stability and reduced thermal sensitivity has been achieved, leading to 0.3-cmH2O pressure accuracy. The EFPI probes have been embedded in medical catheters with 4F size for dual bladder and abdominal pressure measurement throughout the full course of a urodynamic analysis. Pressure traces have been compared with a PICO2000 urodynamic instrument, showing improved accuracy and higher responsivity to local pressure variations. Tests have been carried out in vivo on seven patients; the main highlights are reported, showing the premises for an EFPI-based diagnostic tool.

Original languageEnglish
Article number6762873
Pages (from-to)2335-2340
Number of pages6
JournalIEEE Sensors Journal
Issue number7
Publication statusPublished - Jul 2014
Externally publishedYes


  • Biophotonics
  • extrinsic Fabry-Perot interferometry (EFPI)
  • medical optics instrumentation
  • optical fiber sensing
  • urology

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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