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Proceedings Paper

Microstructure-based fiber optic pressure sensor for measurements in lumbar intervertebral discs
Author(s): Svante Hoejer; Martin Krantz; Lars Ekstroem; Allison Kaigle; Sten Holm
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Paper Abstract

A fiberoptic system with a microstructure sensor element was used for measuring lumbar intervertebral disc pressure in a porcine model. The fiberoptic pressure sensor was inserted in the disc using a guiding needle. A reference sensor was also introduced into the same area of an adjacent disc. The fiberoptic sensor detected pressures from 0.7-8 bar in the disc. Dynamic measurements were carried out at frequencies between 2 and 10 Hz. No phase lag was observed between the applied force and the measured pressures. Sensitivity, dynamic response and available pressure range are all important design characteristics for which this fiberoptic sensor has a competitive edge.

Paper Details

Date Published: 15 January 1999
PDF: 8 pages
Proc. SPIE 3570, Biomedical Sensors, Fibers, and Optical Delivery Systems, (15 January 1999);
Show Author Affiliations
Svante Hoejer, Samba Sensors AB (Sweden)
Martin Krantz, Samba Sensors AB (Sweden)
Lars Ekstroem, Sahlgrenska Univ. Hospital (Sweden)
Allison Kaigle, Sahlgrenska Univ. Hospital (Sweden)
Sten Holm, Sahlgrenska Univ. Hospital (Sweden)

Published in SPIE Proceedings Vol. 3570:
Biomedical Sensors, Fibers, and Optical Delivery Systems
Francesco Baldini; Nathan I. Croitoru; Martin Frenz; Ingemar Lundstroem; Mitsunobu Miyagi; Riccardo Pratesi; Otto S. Wolfbeis, Editor(s)

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