D9.3 - State of the Art Telemetric Implantable Sensors and Their Encapsulation

Event
AMA Conferences 2013
2013-05-14 - 2013-05-16
Nürnberg
Band
Proceedings SENSOR 2013
Chapter
D9 - Medical Sensors
Author(s)
M. Kraft, M. Görtz - Fraunhofer Institut für Mikroelektronische Schaltungen und Systeme, Duisburg (Germany), J. Müntjes, W. Mokwa - RWTH Aachen University (Germany), N. Cleven, T. Schmitz-Rode - University and University Hospital Aachen (Germany)
Pages
633 - 637
DOI
10.5162/sensor2013/D9.3
ISBN
978-3-9813484-3-9
Price
free

Abstract

MEMS sensor have the potential to revolutionize medical implants. Their advantages are a small form factor, low power consumption and the ability to operate by telemetry. While some MEMS sensors, for example to measure pressure, have reached a high level of maturity, their encapsulation for long term implants remains problematic. Here, a novel encapsulation a technique is presented that combines flexibility with long term stability. It relies on a two layer approach: the outer thicker layer consists of a polymer, while the inner layer consists of a stack of thin layers which is long term stable and water vapor impenetrable. Furthermore, the discussed pressure sensor can be operated wirelessly, therefore no battery is required. The operation is described, and some initial measurement data on animal trials are presented.

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