Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff

Correia, R. and Blackman, O.R. and Hernandez, F.U. and Korposh, S. and Morgan, S.P. and Hayes-Gill, B. and James, S.W. and Evans, D. and Norris, A. (2016) Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff. In: Sixth European Workshop on Optical Fibre Sensors, 31 May - 03 June 2016, Limerick, Ireland.

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Abstract

A method for measuring the contact pressure between an endotracheal tube cuff and the trachea was designed and developed by using a fibre Bragg grating (FBG) based optical fibre sensor. The FBG sensor is encased in an epoxy based UV-cured cuboid patch and transduces the transversely loaded pressure into an axial strain that induces wavelength shift of the Bragg reflection. The polymer patch was created by using a PTFE based mould and increases tensile strength and sensitivity of the bare fibre FBG to pressure to 2.10×10-2 nm/kPa. The characteristics of the FBG patch allow for continuous measurement of contact pressure. The measurement of contact pressure was demonstrated by the use of a 3D printed model of a human trachea. The influence of temperature on the measurements is reduced significantly by the use of a second FBG sensor patch that is not in contact with the trachea. Intracuff pressure measurements performed using a commercial manometer agreed well with the FBG contact pressure measurements. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Conference or Workshop Item (Paper)
Additional Information: R. Correia ; O.R. Blackman ; F.U. Hernandez ; S. Korposh ; S.P. Morgan ; B.R. Hayes-Gill ; S.W. James ; D. Evans ; A. Norris " Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 965704 (May 30, 2016); doi:10.1117/12.2236859 ; http://dx.doi.org/10.1117/12.2236859 . Copyright 2016 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Keywords: Fibre Bragg Grating, Intracuff pressure, Contact pressure, Endotracheal tube
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Electrical and Electronic Engineering
Identification Number: https://doi.org/10.1117/12.2236859
Depositing User: Eprints, Support
Date Deposited: 08 Jun 2016 09:45
Last Modified: 16 Sep 2016 02:30
URI: http://eprints.nottingham.ac.uk/id/eprint/33827

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