Portable non-invasive glucose monitor
First Claim
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1. A portable spectroscopic system for non-invasively determining the level of an analyte in vivo comprising:
- a light source for illuminating a skin surface with one or more wavelengths of electromagnetic radiation;
a detector for detecting radiation emanating from said skin surface after illumination;
an optical interface containing an aperture that allows for passage of said electromagnetic radiation from said light source to said skin surface, and passage of radiation from said skin surface to said detector; and
a processor for determining said analyte level from detected radiation.
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Abstract
The invention provides compositions, methods and devices for noninvasive measurement of the analyte levels in vivo. More specifically, the invention provides a hand-held glucose monitor and an optical coupler that allows for short-term discontinuous and/or continuous information on dynamic in vivo glucose levels. The device may include a optical coupler for optically connecting a skin surface to the device that contains a plurality of zones. These zones contain areas for a variety of purposes including calibration of the instrument, reading of the skin surface, and protection of the instrument.
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Citations
23 Claims
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1. A portable spectroscopic system for non-invasively determining the level of an analyte in vivo comprising:
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a light source for illuminating a skin surface with one or more wavelengths of electromagnetic radiation;
a detector for detecting radiation emanating from said skin surface after illumination;
an optical interface containing an aperture that allows for passage of said electromagnetic radiation from said light source to said skin surface, and passage of radiation from said skin surface to said detector; and
a processor for determining said analyte level from detected radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A disposable calibration device for use with a portable optical patient analysis system comprising
a housing comprising an optically transparent medium and a first and a second reservoir suitable for holding said medium, wherein said housing comprises a window disposed between said first and second reservoir and a means for urging said optically transparent medium from said first reservoir to said second reservoir while passing over said window, wherein upon contact of said calibration device with said portable patient analysis system the light transmitting aperture of said patient analysis system is placed in alignment with said window, wherein said optically transparent medium is subdivided into at least a calibration zone and an analysis zone, wherein said calibration zone is coated with a calibration composition suitable for calibrating said portable optical analysis system, and said analysis zone is uncoated or is coated with a composition suitable for recording data from a patient for analysis.
Specification