Development of a medical fiber-optic oxygen sensor based on optical absorption change

Development of a medical fiber-optic oxygen sensor based on optical absorption change

A fiber-optic oxygen sensor has been developed for use in medical applications. The sensor's viologen indicator becomes strongly absorbant after brief UV stimulation, and then returns to the transparent state. The rate of indicator return to transparency is proportional to the local oxygen conc...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering Vol. 39; no. 2; pp. 185 - 193
Main Authors: Wolthius, R., McCrae, D., Hartl, J.C., Saaski, E., Mitchell, G.L., Garcin, K., Willard, R.
Format: Journal Article
Language:English
Published: United States IEEE 01-02-1992
Subjects:
Absorption
Biomedical equipment
Biomedical monitoring
Biomedical optical imaging
Electromagnetic wave absorption
Equipment Design
Fiber Optic Technology - instrumentation
Humans
Indicators and Reagents - chemical synthesis
Indicators and Reagents - chemistry
Light emitting diodes
Materials Testing
Medical services
Optical fiber sensors
Optical Fibers
Optical sensors
Oxidation-Reduction
Oximetry - instrumentation
Oximetry - methods
Oxygen - blood
Photochemistry
Photodiodes
Signal Processing, Computer-Assisted
Stimulated emission
Ultraviolet Rays
Viologens - chemical synthesis
Viologens - chemistry
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Description
Summary:A fiber-optic oxygen sensor has been developed for use in medical applications. The sensor's viologen indicator becomes strongly absorbant after brief UV stimulation, and then returns to the transparent state. The rate of indicator return to transparency is proportional to the local oxygen concentration. Indicator absorbance is monitored with a red LED and receiving photodiode, and absorbance data are processed by a dedicated CPU. The solid-state sensor system has performance comparable to existing oxygen measurement techniques, and may be applicable for both in vitro and in vivo oxygen measurements.< >
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ISSN:0018-9294
1558-2531
DOI:10.1109/10.121650