G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 33/52 (2006.01) G01N 21/64 (2006.01)
Patent
CA 2048858
SYSTEM AND METHOD FOR MEASURING OXYGEN IN THE PRESENCE OF HALOTHANE ABSTRACT The system for measuring the concentration of oxygen in a fluid sample which may also contain halothane includes a sensor having a matrix containing a first indicator dye which fluoresces at a known wavelength when irradiated with light of a specific wavelength and containing a second indicator dye which fluoresces at a different emission wavelength upon irradiation with light of a similar or different specific wavelength. The fluorescence of the first and second indicator dyes are quenched to a different degree by the presence of oxygen, but the fluorescence of the indicator dyes is quenched to the same degree by halothane. Means are provided for irradiating the indicator dyes in the matrix with the appropriate wavelengths of light, and means are provided for measuring the resultant intensity of fluorescence of the indicator dyes at the different wavelengths of fluorescence. Means are also provided for determining the ratio of the intensity of the different wavelengths of the fluorescence of the indicator dyes, to provide an indication of the concentration of oxygen in the sample measured.
Divers George A. III
Hui Henry K.
Lumsden Terry J.
Riccitelli Samuel D.
Puritan-Bennett Corporation
Smart & Biggar
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