In this paper, a flexible microfluidic-based sensor is investigated for monitoring the bending and tilting of a metal bar for miniature access pectus excavatum repair (MAPER). Built on a polyethylene terephthalate (PET) substrate, the sensor contains a polydimethylsiloxane (PDMS) microstructure embedded with an electrolyte-enabled 5×1 resistive transducer array. One end of the metal bar is fixed and the sensor is attached to different locations of the bar. The other end of the metal bar is connected to a 5-lb weight for controlling the bending of the bar. Manually holding and releasing the weight bends the metal bar, which translates to strain in the PET substrate and consequently causes resistance changes in the transducer array. Upon the same amount of bending, resistance change of the sensor varies with the location of the sensor on the metal bar, due to the bending (or strain) variation along its length. Tilting of the metal bar relative to a rigid object (i.e., sternum) introduces force acting on the microstructure of the sensor, and thus gives rise to resistance changes in the transducer array. As a result, this sensor shows the potential of being used in MAPER to minimize tissue injury in vivo application.
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ASME 2017 International Mechanical Engineering Congress and Exposition
November 3–9, 2017
Tampa, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5836-3
PROCEEDINGS PAPER
A Flexible Microfluidic-Based Sensor for Monitoring the Bending and Tilting of a Metal Bar for Pectus Excavatum (PE) Patients
Yichao Yang,
Yichao Yang
Old Dominion University, Norfolk, VA
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Linda Vahala,
Linda Vahala
Old Dominion University, Norfolk, VA
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Frederic D. McKenzie,
Frederic D. McKenzie
Old Dominion University, Norfolk, VA
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Zhili Hao
Zhili Hao
Old Dominion University, Norfolk, VA
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Dan Wang
Old Dominion University, Norfolk, VA
Yichao Yang
Old Dominion University, Norfolk, VA
Linda Vahala
Old Dominion University, Norfolk, VA
Frederic D. McKenzie
Old Dominion University, Norfolk, VA
Zhili Hao
Old Dominion University, Norfolk, VA
Paper No:
IMECE2017-70578, V003T04A052; 6 pages
Published Online:
January 10, 2018
Citation
Wang, D, Yang, Y, Vahala, L, McKenzie, FD, & Hao, Z. "A Flexible Microfluidic-Based Sensor for Monitoring the Bending and Tilting of a Metal Bar for Pectus Excavatum (PE) Patients." Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition. Volume 3: Biomedical and Biotechnology Engineering. Tampa, Florida, USA. November 3–9, 2017. V003T04A052. ASME. https://doi.org/10.1115/IMECE2017-70578
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