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

Correia, R.; Blackman, O. R.; Hernandez, F. U.; Korposh, S.; Morgan, S. P.; Hayes-Gill, B. R.; James, S. W.; Evans, D.; Norris, A.

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.

Citation

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

• Presentation Conference Type: Edited Proceedings
• Conference Name: Sixth European Workshop on Optical Fibre Sensors
• Start Date: May 31, 2016
• End Date: Jun 3, 2016
• Online Publication Date: May 30, 2016
• Publication Date: May 30, 2016
• Deposit Date: Jun 8, 2016
• Publicly Available Date: Jun 8, 2016
• Publisher: Society of Photo-optical Instrumentation Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 9916
• Article Number: 99161F
• Series Title: SPIE - International Society for Optical Engineering. Proceedings
• Series ISSN: 2410-9045
• Book Title: Sixth European Workshop on Optical Fibre Sensors
• ISBN: 9781510602199
• DOI: https://doi.org/10.1117/12.2236859
• Keywords: Fibre Bragg Grating, Intracuff pressure, Contact pressure, Endotracheal tube
• Public URL: https://nottingham-repository.worktribe.com/output/787947
• Publisher URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9916/1/Highly-sensitive-contact-pressure-measurements-using-FBG-patch-in-endotracheal/10.1117/12.2236859.short
• Contract Date: Jun 8, 2016