Review of the potential of a wireless MEMS microsystem for biomedical applications

Purpose - Telemetry capsules have existed since the 1950s and were used to measure temperature, pH or pressure inside the gastrointestinal (GI) tract. It was hoped that these capsules would replace invasive techniques in the diagnosis of function disorders in the GI tract. However, problems such as...

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Bibliographic Details
Published in:Sensor review 2005-12, Vol.25 (4), p.277-286
Main Authors: Arshak, A, Arshak, K, Lyons, G, Waldron, D, Morris, D, Korostynska, O, Jafer, E
Format: Article
Language:English
Subjects:
Biosensors
Biotelemetry
Catheters
Circuits
Manufacturing
Medical equipment
Medical technology
Microelectromechanical systems
Semiconductors
Sensors
Studies
Telemetry
Wireless communications
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Summary:Purpose - Telemetry capsules have existed since the 1950s and were used to measure temperature, pH or pressure inside the gastrointestinal (GI) tract. It was hoped that these capsules would replace invasive techniques in the diagnosis of function disorders in the GI tract. However, problems such as signal loss and uncertainty of the pills position limited their use in a clinical setting. In this paper, a review of the capabilities of microelectromechanical systems (MEMS) for the fabrication of a wireless pressure sensor microsystem is presented.Design methodology approach - The circuit requirements and methods of data transfer are examined. The available fabrication methods for MEMS sensors are also discussed and examples of wireless sensors are given. Finally, the drawbacks of using this technology are examined.Findings - MEMS for use in wireless monitoring of pressure in the GI tract have been investigated. It has been shown that capacitive pressure sensors are particularly suitable for this purpose. Sensors fabricated for wireless continuous monitoring of pressure have been reviewed. Great progress, especially using surface micromachining, has been made in recent years. However, despite these advances, some challenges remain.Originality value - Provides a review of the capabilities of MEMS.
ISSN:0260-2288
1758-6828
DOI:10.1108/02602280510700467