Integrated optic system for monitoring blood gases
First Claim
1. A probe for in vivo monitoring constituents of the blood comprising,a base having a surface,at least one dye well and one channel formed in said base and opening at the surface of said base, said channel also opening into said dye well;
- a first optical fiber having a first end mounted in said channel and a second end opposite said first end,a waveguide of optically conducting formed in said medium channel and forming an optical coupling between said fiber and said dye well,a dye in said dye well whose optical characteristics change in the presence of a constituent,means, permeable to said constituent, for containing said dye within said dye well.
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Accused Products
Abstract
Blood gases and the like are monitored by a single probe having multiple dye wells and dyes immobilized in the wells, the dyes being exposed to the blood gases. Optical fibers and waveguides connected to the dye wells permit light to be directed from a light source to be dyes and the light due to absorption or the spontaneous emission of the dye returned to a light detector. The intensity, phase shift or other mechanism of the returned radiation is a measure of the partial pressure of a respective blood gas.
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Citations
11 Claims
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1. A probe for in vivo monitoring constituents of the blood comprising,
a base having a surface, at least one dye well and one channel formed in said base and opening at the surface of said base, said channel also opening into said dye well; -
a first optical fiber having a first end mounted in said channel and a second end opposite said first end, a waveguide of optically conducting formed in said medium channel and forming an optical coupling between said fiber and said dye well, a dye in said dye well whose optical characteristics change in the presence of a constituent, means, permeable to said constituent, for containing said dye within said dye well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A probe for monitoring three fluids comprising,
a base having a surface, three dye wells formed in said base and opening at the surface of said base, channels formed in said base opening at the surface of said base and to each of said dye wells, said channels containing an optically conducting medium; -
optical fiber means for directing light into and receiving light from said dye wells via said optically conducting medium; a dye in each said dye well, each dye in each well being capable of reacting to a respective fluid to be monitored to modify the optical characteristics of the dye, and a membrane covering each dye well, each membrane being selectively permeable to a fluid being monitored. - View Dependent Claims (11)
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Specification