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A Polypyrrole-based Strain Sensor Dedicated to Measure Bladder Volume in Patients with Urinary Dysfunction

Sumitra Rajagopalan, Mohamad Sawan, Ebrahim Ghafar-Zadeh, Oumarou Savadogo, Vamsy Chodavarapu

Article (2008)

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Abstract

This paper describes a new technique to measure urine volume in patients with urinary bladder dysfunction. Polypyrrole - an electronically conducting polymer - is chemically deposited on a highly elastic fabric. This fabric, when placed around a phantom bladder, produced a reproducible change in electrical resistance on stretching. The resistance response to stretching is linear in 20%-40% strain variation. This change in resistance is influenced by chemical fabrication conditions. We also demonstrate the dynamic mechanical testing of the patterned polypyrrole on fabric in order to show the feasibility of passive interrogation of the strain sensor for biomedical sensing applications.

Uncontrolled Keywords

Strain sensor; elastic properties; gauge factor; impedance spectroscopy; polypyrrole; urinary bladder volume

Subjects: 1800 Chemical engineering > 1800 Chemical engineering
1900 Biomedical engineering > 1901 Biomedical technology
2500 Electrical and electronic engineering > 2500 Electrical and electronic engineering
9000 Health sciences > 9000 Health sciences
Department: Department of Chemical Engineering
Department of Electrical Engineering
Research Center: Other
Funders: CRSNG/NSERC, Canada Research Chair on Smart Medical Devices
PolyPublie URL: https://publications.polymtl.ca/3390/
Journal Title: Sensors (vol. 8, no. 8)
Publisher: MDPI
DOI: 10.3390/s8085081
Official URL: https://doi.org/10.3390/s8085081
Date Deposited: 07 Dec 2018 13:53
Last Modified: 11 Nov 2022 13:45
Cite in APA 7: Rajagopalan, S., Sawan, M., Ghafar-Zadeh, E., Savadogo, O., & Chodavarapu, V. (2008). A Polypyrrole-based Strain Sensor Dedicated to Measure Bladder Volume in Patients with Urinary Dysfunction. Sensors, 8(8). https://doi.org/10.3390/s8085081

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