APPARATUS AND METHOD FOR MEASURING AN ANALYTE SUCH AS BILIRUBIN, USING LIGHT
First Claim
1. An analyte measuring device (5), comprising:
- a number of narrow band light sources (10), each narrow band light source being structured to emit a spectrum of light covering a number of wavelengths; and
a number of detector assemblies (15) configured to receive light reflected from a subject, each of the detector assemblies including a filter (20) and a photodetector (25), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each narrow band light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each narrow band light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the filters.
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Accused Products
Abstract
An analyte measuring device (5) for monitoring, for example, levels of a tissue analyte (e.g., bilirubin), includes a number of narrow band light sources (10), each narrow band light source being structured to emit a spectrum of light covering a number of wavelengths, and a number of detector assemblies (15) configured to receive light reflected from the transcutaneous tissues of a subject. Each of the detector assemblies includes a filter (20) and a photodetector (25), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each narrow band light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each narrow band light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the optical filters.
9 Citations
22 Claims
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1. An analyte measuring device (5), comprising:
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a number of narrow band light sources (10), each narrow band light source being structured to emit a spectrum of light covering a number of wavelengths; and a number of detector assemblies (15) configured to receive light reflected from a subject, each of the detector assemblies including a filter (20) and a photodetector (25), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each narrow band light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each narrow band light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the filters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 16, 21)
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12. A method of measuring an analyte of a subject, comprising:
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directing light from a number of light sources (10) toward the subject, each light source emitting a spectrum of light covering a number of wavelengths, wherein in response to the directing, reflected light is reflected by the subject; filtering the reflected light using a number of filters (20), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the filters, the filtering producing a filtered light associated with each filter; and determining a measurement relating to the analyte based on the filtered light associated with each filter. - View Dependent Claims (15, 17, 18, 19, 20, 22)
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Specification