METHODS AND SYSTEMS FOR LIGHT SIGNAL CONTROL IN A PHYSIOLOGICAL MONITOR
First Claim
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1. A method of determining a physiological parameter of a subject, the method comprising:
- receiving, using processing equipment, two or more light signals attenuated by a subject, wherein each respective light signal corresponds to a different wavelength of light;
determining, using processing equipment, a metric based at least in part on at least one of the two or more received light signals;
selecting, using processing equipment, at least one of the two or more light signals based on the metric; and
determining, using the processing equipment, a physiological parameter of the subject based on the at least one selected light signal.
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Abstract
A physiological monitoring system may select a light signal for determining a physiological parameter. In some embodiments, the monitoring system may select a received light signal for further processing based on a physiological metric such as blood oxygen saturation value, or based on a system metric such as a signal-to-noise ratio. In some embodiments, the system may determine a light drive parameter based on a received signal. For example, the system may select a received light signal for further processing in order to determine a physiological parameter.
16 Citations
20 Claims
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1. A method of determining a physiological parameter of a subject, the method comprising:
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receiving, using processing equipment, two or more light signals attenuated by a subject, wherein each respective light signal corresponds to a different wavelength of light; determining, using processing equipment, a metric based at least in part on at least one of the two or more received light signals; selecting, using processing equipment, at least one of the two or more light signals based on the metric; and determining, using the processing equipment, a physiological parameter of the subject based on the at least one selected light signal. - View Dependent Claims (2, 3, 4, 5)
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6. A system for determining a physiological parameter of a subject, the system comprising:
processing equipment configured to; receive two or more light signals attenuated by a subject, wherein each respective light signal corresponds to a different wavelength of light; determine a metric based at least in part on at least one of the two or more received light signals; select at least one of the two or more light signals based on the metric; and determine a physiological parameter of the subject based on the at least one selected light signal. - View Dependent Claims (7, 8, 9, 10)
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11. A method of determining a physiological parameter of a subject, the method comprising:
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receiving, using processing equipment, one or more light signals attenuated by a subject; determining, using processing equipment, a metric based on at least one of the one or more light signals; determining, using processing equipment, a light drive parameter based on the metric, wherein the light drive parameter determines a wavelength of light to be emitted; generating, using processing equipment, at least one light drive signal based on the light drive parameter, wherein the at least one light drive signal is used to generate at least one photonic signal attenuated by a subject, wherein the at least one photonic signal is of at least the wavelength of light to be emitted; and determining, using the processing equipment, a physiological parameter of the subject based at least in part on the at least one photonic signal. - View Dependent Claims (12, 13, 14, 15)
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16. A system for determining a physiological parameter of a subject, the system comprising:
processing equipment configured to; receive one or more light signals attenuated by a subject; determine a metric based on at least one of the one or more light signals; determine a light drive parameter based on the metric, wherein the light drive parameter determines a wavelength of light to be emitted; generate at least one light drive signal based on the light drive parameter, wherein the at least one light drive signal is used to generate at least one photonic signal attenuated by a subject, wherein the at least one photonic signal is of at least the wavelength of light to be emitted; and determine a physiological parameter of the subject based at least in part on the at least one photonic signal. - View Dependent Claims (17, 18, 19, 20)
Specification