APPARATUS, SYSTEM AND METHOD FOR TISSUE OXIMETRY
First Claim
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1. An apparatus for measuring an oxygen level, the apparatus comprising:
- a plurality of optical fibers;
an enclosure surrounding the optical fibers to form a fiber optic bundle; and
an oxygen-sensitive dye disposed at a first end of the fiber optic bundle, wherein at least one of the optical fibers is an excitation fiber for transmitting an intensity modulated light forming a sine wave to the dye, wherein at least one of the optical fibers is an emission fiber for transmitting an emission from the dye, and wherein the emission results from the intensity modulated light contacting the dye.
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Abstract
An apparatus, system and method for measuring oxygen concentration for exciting and detecting oxygen-sensitive fluorescence in biological tissues to detect oxygen levels (e.g., the partial pressure of oxygen).
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Citations
18 Claims
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1. An apparatus for measuring an oxygen level, the apparatus comprising:
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a plurality of optical fibers;
an enclosure surrounding the optical fibers to form a fiber optic bundle; and
an oxygen-sensitive dye disposed at a first end of the fiber optic bundle, wherein at least one of the optical fibers is an excitation fiber for transmitting an intensity modulated light forming a sine wave to the dye, wherein at least one of the optical fibers is an emission fiber for transmitting an emission from the dye, and wherein the emission results from the intensity modulated light contacting the dye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for measuring an oxygen level, the apparatus comprising:
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a heating element for raising the temperature of skin at a site to be measured;
a sensor unit including an oxygen-sensitive dye;
an excitation source for generating excitation light in the form of an intensity modulated sine wave;
a detector for detecting an emission from the dye in response to the excitation light contacting the dye; and
a phase detector for detecting a phase delay between the excitation light and the emission. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of measuring an oxygen level, the method comprising:
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generating an excitation wave as an intensity modulated light forming a sine wave;
focusing the excitation wave on an oxygen-sensitive dye;
detecting an emission wave emitted in response to the excitation wave contacting the dye;
determining a phase delay between the excitation wave and the emission wave. - View Dependent Claims (18)
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Specification