Premium
A composite fibre optic catheter for monitoring peristaltic transit of an intra‐luminal bead
Author(s) -
Arkwright John W.,
Underhill Ian D.,
Dodds Kelsi N.,
Brookes Simon J. H.,
Costa Marcello,
Spencer Nick J.,
Dinning Phil. G.
Publication year - 2016
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.201500187
Subject(s) - peristalsis , materials science , optical fiber , biomedical engineering , bead , lumen (anatomy) , opacity , catheter , composite number , optics , composite material , anatomy , surgery , medicine , physics
A fibre optic motion sensor has been developed for monitoring the proximity and direction of motion of a ferrous bead travelling axial to the sensor. By integrating an array of these sensors into our previously developed fibre optic manometry catheters we demonstrate simultaneous detection of peristaltic muscular activity and the associated motion of ferrous beads through a colonic lumen. This allows the motion of solid content to be temporally and spatially related to pressure variations generated by peristaltic contractions without resorting to videoflouroscopy to track the motion of a radio opaque bolus. The composite catheter has been tested in an in‐vitro animal preparation consisting of excised sections of rabbit colon.Cut‐away image of the fibre optic motion sensor showing the location of the fibre Bragg gratings and the rare earth magnet.