Design and clinical results from a fibre optic manometry catheter for oesophageal motility studies

J. W. Arkwright; S. N. Doe; M. C. Smith; N. G. Blenman; I. D. Underhill; S. A. Maunder; J. A. Glasscock; B. Lim; M. M. Szczesniak; P. G. Dinning; I. J. Cook

doi:10.1117/12.785968

16 May 2008 Design and clinical results from a fibre optic manometry catheter for oesophageal motility studies

J. W. Arkwright, S. N. Doe, M. C. Smith, N. G. Blenman, I. D. Underhill, S. A. Maunder, J. A. Glasscock, B. Lim, M. M. Szczesniak, P. G. Dinning, I. J. Cook

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70042D (2008) https://doi.org/10.1117/12.785968
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

We report the design and operation of an optical fibre manometry catheter for measuring variation in pressure in the oesophagus during peristalsis. Catheters of this kind are used to help diagnose oesophageal disorders by recording the muscular contractions of the oesophageal wall in patients having difficulty swallowing. Traditional oesophageal catheters consist of an array of recording sites enabling pressure measurement from multiple locations along the the oesophagus. However, these catheters tend to be bulky or complex to operate whereas our optical equivalent uses a series of Fibre Bragg Grating (FBG) pressure sensors on a single fibre; significantly reducing complexity and allowing the catheter diameter to be minimised. The data from each FBG was recorded using a solid state spectrometer in which the reflected peaks each covered a number of pixels of the spectrometer. This has enabled the FBG peaks to be tracked in wavelength with sub-nanometre precision resulting in pressure sensitivities of less than 1mmHg. Results from a clinical trial carried out on 10 healthy subjects will be presented. For the trial, each subject was simultaneously intubated with the optical catheter and a commercially available solid-state catheter. Back-to-back readings were taken from both devices during a series of controlled water swallows. Ten swallows were recorded with the catheters sensors positioned in proximal, mid, and distal regions of the oesophagus and the data analysed statistically. The fibre optic device accurately picked up the dynamic variations in pressure, and can react at least as fast as the solid state device.

Citation Download Citation

J. W. Arkwright, S. N. Doe, M. C. Smith, N. G. Blenman, I. D. Underhill, S. A. Maunder, J. A. Glasscock, B. Lim, M. M. Szczesniak, P. G. Dinning, and I. J. Cook "Design and clinical results from a fibre optic manometry catheter for oesophageal motility studies", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70042D (16 May 2008); https://doi.org/10.1117/12.785968

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available