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Sensors 2008, 8(8), 5081-5095; doi:10.3390/s8085081

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

1
Polystim Neurotechnologies Laboratory, Department of Electrical Engineering, École Polytechnique de Montréal, Montréal, Quebec, Canada
2
Department of Electrical and Computer Engineering, McGill University, Montréal, Quebec, Canada
3
Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Quebec, Canada
*
Author to whom correspondence should be addressed.
Received: 1 July 2008 / Revised: 22 August 2008 / Accepted: 26 August 2008 / Published: 27 August 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. View Full-Text
Keywords: Strain sensor; urinary bladder volume; polypyrrole; impedance spectroscopy; elastic properties; gauge factor Strain sensor; urinary bladder volume; polypyrrole; impedance spectroscopy; elastic properties; gauge factor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Rajagopalan, S.; Sawan, M.; Ghafar-Zadeh, E.; Savadogo, O.; Chodavarapu, V.P. A Polypyrrole-based Strain Sensor Dedicated to Measure Bladder Volume in Patients with Urinary Dysfunction. Sensors 2008, 8, 5081-5095.

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