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A wireless implantable passive strain sensor system

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5 Author(s)
F. Umbrecht ; Micro & Nanosystems, ETH Zurich, Switzerland ; M. Wendlandt ; D. Juncker ; C. Hierold
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A design study of a novel passive strain-sensor technology for the in-situ measurement of small strains on implants, bones or fixation systems is presented. The sensing principle is based on hydro-mechanical strain amplification which allows for the abandonment of any electrical circuits. Thus, the sensor can be fabricated applying solely biocompatible or bioresorbable polymeric materials. Finite element simulations are employed to validate the basic sensing principle and to optimize design parameters according to the required target specifications. Remote wireless and passive signal read-out of the sensor signal can be achieved by advanced ultrasound imaging technologies

Published in:

IEEE Sensors, 2005.

Date of Conference:

Oct. 30 2005-Nov. 3 2005