A fibre optic catheter for simultaneous measurement of longitudinal and circumferential muscular activity in the gastrointestinal tract

John Arkwright, N Blenman, I Underhill, Simon Maunder, Nicholas Spencer, Marcello Costa, Simon Brookes, M Szczesniak, Phillip Dinning

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    Diagnostic catheters based on fibre Bragg gratings (FBG's) are proving to be highly effective for measurement of the muscular activity associated with motility in the human gut. While the primary muscular contractions that generate peristalsis are circumferential in nature, it has long been known that there is also a component of longitudinal contractility present, acting in harmony with the circumferential component to improve the overall efficiency of material movement. We report the detection of longitudinal motion in mammalian intestine using an FBG technique that should be viable for similar detection in humans. The longitudinal sensors have been combined with our previously reported FBG pressure sensing elements to form a composite catheter that allows the relative phase between the two components to be detected. The catheter output has been validated using video mapping in an ex-vivo rabbit ileum preparation.

    Original languageEnglish
    Pages (from-to)244-251
    Number of pages8
    JournalJournal of Biophotonics
    Volume4
    Issue number4
    DOIs
    Publication statusPublished - Apr 2011

    Keywords

    • Biophotonics
    • Fiber Bragg gratings
    • Gastroenterology
    • Medical optics instrumentation
    • Optical fibre sensing

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