A soft flexible and stretchable pressure sensor array designed to warn of pressure ulcer formation
department or school: Applied Science, Faculty of
department or school: Biomedical Engineering, School of
data provider: DSpace
degree campus: UBCV
creator: Wyss, Justin Kian Ming
issued: 2023-02-28T08:00:00Z
issued: 2020
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: A pressure ulcer, also commonly referred to as a pressure injury or bedsore, is a localized injury or damage to the skin and/or underlying soft tissue, usually over bony prominences, due to prolonged pressure that is sufficient enough to impair blood supply. It is a wound that can disrupt an individual’s life abruptly, affecting not only the person’s physical and mental wellbeing, but also impacting the healthcare system significantly. Most susceptible to the development of a pressure ulcer are individuals confined to beds and/or wheelchairs. In the spinal cord injury (SCI) community, pressure ulcers remain one of the most prevalent and costly preventable secondary complications. There is a need for methods and/or devices that can reduce the incidences or even prevent the formation of such wounds, especially in bedridden patients and wheelchair users. We propose a soft, flexible, and stretchable capacitive pressure sensor array, made out of low-cost materials. It is scalable in size, robust and capable of measuring pressure in the desired range (0 – 200 mmHg) over extended periods of time (>12h) with low repeatability error (0.5%), hysteresis (0.57%), and non-linearity error (0.52%), while fully conforming around various contours (e.g. wheelchair cushions). The pressure readings are displayed on a generated pressure heatmap with the data being wirelessly transmitted to mobile devices (e.g. laptop, smartphone, tablet). A first iteration alert system design enables the sensor to be implemented for potential pressure ulcer prevention, warning the users and healthcare professionals prior to a formation. The working principle of the sensor is based on the well-established capacitance sensing technology, where the relative position of two electrodes is changed by applied force. The sensor array is made of soft, rubbery material and the dielectric contains air to enable relatively large deformations. Further work is required to improve the life-span of the sensor before it…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/75715
note: A SOFT FLEXIBLE AND STRETCHABLE PRESSURE SENSOR ARRAY DESIGNED TO WARN OF PRESSURE ULCER FORMATION by Justin Kian Ming Wyss B.A.Sc., The University of British Columbia, 2017 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (BIOMEDICAL ENGINEERING) THE UNIVERSITY OF BRITISH COLUMBIA (VANCOUVER) August 2020 © Justin Kian Ming Wyss, 2020 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, a thesis entitled: A Soft Flexible and Stretchable Pressure Sensor Array Designed to Warn of Pressure Ulcer Formation submitted by Justin Kian Ming Wyss in partial fulfillment of the requirements for the degree of Master of Applied Science in Biomedical Engineering Examining Committee: Dr. John D. W. Madden, Electrical and Computer Engineering, UBC Supervisor Dr. Hendrik F. Machiel Van der Loos, Mechanical Engineering, UBC Supervisory Committee Member Dr. Babak Shadgan, Orthopaedics, UBC Supervisory Committee Member iii Abstract A pressure ulcer, also commonly referred to as a pressure injury or bedsore, is a localized injury or damage to the skin and/or underlying soft tissue, usually over bony prominences, due to prolonged pressure that is sufficient enough to impair blood supply. It is a wound that can disrupt an individual’s life abruptly, affecting not only the person’s physical and mental wellbeing, but also impacting the healthcare system significantly. Most susceptible to the development of a pressure ulcer are individuals confined to beds and/or wheelchairs. In the spinal cord injury (SCI) community, pressure ulcers remain one of the most prevalent and costly preventable secondary complications. There is a need for methods and/or devices that can reduce the incidences or even prevent the formation of such wounds, especially in bedridden patients and wheelchair users. We propose a so…
has type: Thesis/Dissertation
date issued: 2020-11
is shown at: 10.14288/1.0394049
language: eng
degree discipline: Biomedical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/75715