Multiple wavelength sensor emitters
First Claim
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1. A physiological sensor configured to measure an indication of a physiological characteristic of a living patient, the physiological sensor comprising:
- a plurality of light emitting sources arranged to impinge light on body tissue of a living patient including at least six light emitting sources, wherein the plurality of light emitting sources emit light of at least three different wavelengths;
wherein at least a subset of the plurality of light emitting sources are further arranged in two or more clusters, each cluster comprising at least two light emitting sources that emit light within a wavelength range that is different from and does not overlap with the wavelength range of the at least two light emitting sources of other clusters;
wherein for each cluster, light emitting sources that emit light at proximate wavelengths are adjacent to each other,wherein each light emitting source is activated by addressing at least one of a plurality of rows and at least one of a plurality of columns of an electrical grid;
a detector responsive to transmitted light after attenuation by body tissue of the living patient, the body tissue including pulsating blood, wherein the detector is configured to generate a signal indicative of a physiological characteristic of the living patient; and
a sensor housing configured to position the plurality of light emitting sources and the detector with respect to the body tissue of the living patient.
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Abstract
A physiological sensor has light emitting sources, each activated by addressing at least one row and at least one column of an electrical grid. The light emitting sources are capable of transmitting light of multiple wavelengths and a detector is responsive to the transmitted light after attenuation by body tissue.
1073 Citations
17 Claims
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1. A physiological sensor configured to measure an indication of a physiological characteristic of a living patient, the physiological sensor comprising:
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a plurality of light emitting sources arranged to impinge light on body tissue of a living patient including at least six light emitting sources, wherein the plurality of light emitting sources emit light of at least three different wavelengths; wherein at least a subset of the plurality of light emitting sources are further arranged in two or more clusters, each cluster comprising at least two light emitting sources that emit light within a wavelength range that is different from and does not overlap with the wavelength range of the at least two light emitting sources of other clusters; wherein for each cluster, light emitting sources that emit light at proximate wavelengths are adjacent to each other, wherein each light emitting source is activated by addressing at least one of a plurality of rows and at least one of a plurality of columns of an electrical grid; a detector responsive to transmitted light after attenuation by body tissue of the living patient, the body tissue including pulsating blood, wherein the detector is configured to generate a signal indicative of a physiological characteristic of the living patient; and a sensor housing configured to position the plurality of light emitting sources and the detector with respect to the body tissue of the living patient.
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2. A physiological sensor configured to measure an indication of a physiological characteristic of a living patient, the physiological sensor comprising:
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a plurality of light emitting sources arranged to impinge light on body tissue of a living patient including at least six light emitting sources, wherein the plurality of light emitting sources emit light at at least three different wavelengths; wherein at least a subset of the plurality of light emitting sources are further arranged in two or more clusters, each cluster comprising at least two light emitting sources, wherein for each cluster, light emitting sources that emit light at proximate wavelengths are adjacent to each other, wherein each light emitting source is activated by addressing at least one of a plurality of rows and at least one of a plurality of columns of an electrical grid; a detector responsive to transmitted light after attenuation by body tissue of the living patient, the body tissue including pulsating blood, wherein the detector is configured to generate a signal indicative of a physiological characteristic of the living patient; and a sensor housing configured to position the plurality of light emitting sources and the detector with respect to the body tissue of the living patient. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for measuring a physiological characteristic of a living patient, the method comprising:
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positioning a sensor with respect to body tissue of a living patient, the sensor comprising a detector and a plurality of light emitting sources arranged in an electrical grid comprising rows and columns, the plurality of light emitting sources including at least six light emitting sources, wherein the plurality of light emitting sources emit light of at least three different wavelengths, wherein at least a subset of the plurality of light emitting sources are further arranged in two or more clusters, each cluster comprising at least two light emitting sources, wherein for each cluster, light emitting sources that emit light at proximate wavelengths are adjacent to each other; activating at least one of the plurality of light emitting sources, said activating comprising addressing at least one of the rows and at least one of the columns of the electrical grid; detecting transmitted light with the detector after attenuation by the body tissue of the living patient, the body tissue comprising pulsating blood; and generating a signal reflecting a physiological characteristic of the living patient responsive to the detected light. - View Dependent Claims (15, 16, 17)
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Specification