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, each light emitting source activated by addressing at least one of a plurality of rows and at least one of a plurality of columns of an electrical grid, the light emitting sources capable of transmitting light of a plurality of wavelengths, wherein there are fewer light emitting sources than intersections of the rows and columns;
a detector responsive to the 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.
1171 Citations
22 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, each light emitting source activated by addressing at least one of a plurality of rows and at least one of a plurality of columns of an electrical grid, the light emitting sources capable of transmitting light of a plurality of wavelengths, wherein there are fewer light emitting sources than intersections of the rows and columns; a detector responsive to the 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 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. 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 plurality of light emitting sources arranged to impinge light on the body tissue and a detector, the light emitting sources being arranged in an electrical grid comprising rows and columns, wherein there are fewer light emitting sources than intersections of the rows and columns; activating the plurality of light emitting sources, said activating each light emitting source comprising addressing at least one of the rows and at least one of the columns of the electrical grid, such that a plurality of wavelengths of light are emitted from the plurality of light emitting sources; detecting the 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 (17, 18, 19, 20, 21, 22)
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Specification