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Sensors 2014, 14(11), 20620-20644; doi:10.3390/s141120620

Chronically Implanted Pressure Sensors: Challenges and State of the Field

Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, DRB-140, Los Angeles, CA 90089-1111, USA
Ming Hsieh Department of Electrical Engineering, University of Southern California, 3740 McClintock Ave, EEB-100, Los Angeles, CA 90089-2560, USA
Author to whom correspondence should be addressed.
Received: 27 June 2014 / Revised: 14 October 2014 / Accepted: 21 October 2014 / Published: 31 October 2014
(This article belongs to the Special Issue Implantable Sensors)
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Several conditions and diseases are linked to the elevation or depression of internal pressures from a healthy, normal range, motivating the need for chronic implantable pressure sensors. A simple implantable pressure transduction system consists of a pressure-sensing element with a method to transmit the data to an external unit. The biological environment presents a host of engineering issues that must be considered for long term monitoring. Therefore, the design of such systems must carefully consider interactions between the implanted system and the body, including biocompatibility, surgical placement, and patient comfort. Here we review research developments on implantable sensors for chronic pressure monitoring within the body, focusing on general design requirements for implantable pressure sensors as well as specifications for different medical applications. We also discuss recent efforts to address biocompatibility, efficient telemetry, and drift management, and explore emerging trends. View Full-Text
Keywords: implantable pressure sensors; implantable pressure transducers; biocompatibility; telemetry; drift implantable pressure sensors; implantable pressure transducers; biocompatibility; telemetry; drift

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yu, L.; Kim, B.J.; Meng, E. Chronically Implanted Pressure Sensors: Challenges and State of the Field. Sensors 2014, 14, 20620-20644.

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