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Proceedings Paper

Conducting polymer actuator driven catheter: overview and applications
Author(s): Tina Shoa; Nigel R. Munce; Victor Yang; John D. Madden
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Paper Abstract

In this paper conducting polymer based active catheters are presented. Design considerations along with the promise and challenges associated with conducting polymer driven devices are discussed. A conducting polymer driven intravascular catheter is described briefly and its design challenges such as structural rigidity and angle of bending are studied. Then a detailed description of a polypyrrole based active catheter that is ultimately intended for in-vivo imaging applications will be presented. The active catheter contains an optical fibre and is designed to scan the fibre in two dimensions at a speed of 30 Hz to provide real time imaging. The preliminary design was realized by fabricating polypyrrole actuators on a commercially available catheter and patterning the polymer using laser machining technique. The initial device was tested at lower speeds and an image was taken using optical coherence tomography (OCT). The primary challenge to achieving an effective polypyrrole driven catheter for real time imaging is to demonstrate high speed actuation with reasonable liftetime. According to our model, electrochemical characteristics of the conducting polymer such as electronic conductivity, ionic conductivity and electrochemical strain need to be improved to achieve the desired catheter scanning speed.

Paper Details

Date Published: 6 April 2009
PDF: 9 pages
Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72871J (6 April 2009); doi: 10.1117/12.816039
Show Author Affiliations
Tina Shoa, Univ. of British Columbia (Canada)
Nigel R. Munce, Sunnybrook and Women's Health Sciences Ctr. (Canada)
Victor Yang, Sunnybrook and Women's Health Sciences Ctr. (Canada)
John D. Madden, Univ. of British Columbia (Canada)

Published in SPIE Proceedings Vol. 7287:
Electroactive Polymer Actuators and Devices (EAPAD) 2009
Yoseph Bar-Cohen; Thomas Wallmersperger, Editor(s)

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