Method and material for measurement of oxygen concentration

Details Method and material for measurement of oxygen concentration Method and material for measurement of oxygen concentration

G - Physics

01

N

73/55

G01N 21/25 (2006.01) A61B 5/00 (2006.01) G01N 21/64 (2006.01)

Patent

CA 2015415

AN IMPROVED METHOD AND MATERIAL FOR MEASUREMENT OF OXYGEN CONCENTRATION Abstract of the Disclosure The method and material for measuring oxygen concentration use indicators, namely polynuclear aromatics, or more specifically, perylene derivatives, together with an appropriate matrix, such as crosslinked polydimethylsiloxane to provide a sensor element for insertion in the blood stream, preferably by means of an appropriate catheter system. By irradiating the resulting matrix with light of a specific wavelength or wavelength range, which may or may not be the wavelength of maximum absorption, while measuring the fluorescent emission over at least two other specific wavelength ranges, different portions of the emission spectrum have been observed to have different sensitivities to oxygen quenching.

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