ADVANCED PULSE OXIMETRY SENSOR
First Claim
1. An optical physiological measurement system comprising:
- an emitter which emits light of a wavelength;
a diffuser which receives, spreads and emits the spread light, wherein the emitted spread light is directed at a tissue measurement site of a patient; and
a detector configured to detect the emitted light after attenuation by tissue of the patient, the detector further configured to transmit a signal responsive to the detected light.
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Accused Products
Abstract
A non-invasive, optical-based physiological monitoring system is disclosed. One embodiment includes an emitter configured to emit light. A diffuser is configured to receive and spread the emitted light, and to emit the spread light at a tissue measurement site. The system further includes a concentrator configured to receive the spread light after it has been attenuated by or reflected from the tissue measurement site. The concentrator is also configured to collect and concentrate the received light and to emit the concentrated light to a detector. The detector is configured to detect the concentrated light and to transmit a signal representative of the detected light. A processor is configured to receive the transmitted signal and to determine a physiological parameter, such as, for example, arterial oxygen saturation, in the tissue measurement site.
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Citations
36 Claims
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1. An optical physiological measurement system comprising:
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an emitter which emits light of a wavelength; a diffuser which receives, spreads and emits the spread light, wherein the emitted spread light is directed at a tissue measurement site of a patient; and a detector configured to detect the emitted light after attenuation by tissue of the patient, the detector further configured to transmit a signal responsive to the detected light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method to determine a constituent or analyte in a patient'"'"'s blood, the method comprising:
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emitting, from an emitter, light of a wavelength; spreading, with a diffuser, the emitted light and emitting the spread light from the diffuser to a tissue measurement site, wherein the diffuser spreads the light over a greater area of the tissue measurement site than would otherwise be illuminated by the emitter directly emitting light at a tissue measurement site; and detecting, with the detector, the emitted concentrated light. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A pulse oximeter sensor comprising:
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an emitter configured to emit light at a wavelength; a diffuser configured to receive the emitted light, to spread the received light, and to emit the spread light, wherein the emitted spread light is directed at a tissue measurement site; and a detector configured to detect the emitted spread light, the spread light having been attenuated by the tissue measurement site, the detector further configured to output a signal responsive to the detected light. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A pulse oximeter sensor comprising:
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an emitter configured to emit light at a wavelength; a concentrator which concentrates the emitted light after it has been attenuated by the tissue measurement site; and a detector configured to detect the emitted spread, the spread light having been attenuated by or reflected from the tissue measurement site, the detector further configured to output a signal responsive to the detected light. - View Dependent Claims (33, 34, 35, 36)
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Specification