Optical Instrument With Audio Band Frequency Response
First Claim
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1. A medical monitor comprising:
- a processor configured to calculate physiological parameters of a patient based on analog signals indicative of absorption of light in a patient;
wherein the processor comprises an audio codec configured such that it receives signals within its input bandwidth.
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Abstract
A system and method for determining physiological parameters of a patient based on light transmitted through the patient. A light drive signal may be generated by an audio codec in a processor and utilized to generate the light transmitted through the patient. Additionally, the processor may calculate physiological parameters of the patient based on digital data signals converted in the audio codec that are indicative of absorption of light in the patient.
3 Citations
20 Claims
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1. A medical monitor comprising:
a processor configured to calculate physiological parameters of a patient based on analog signals indicative of absorption of light in a patient;
wherein the processor comprises an audio codec configured such that it receives signals within its input bandwidth.- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device comprising:
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a sensor comprising an emitter configured to transmit light through a patient and a detector configured to receive the transmitted light and generate an analog signal indicative of the received transmitted light; and a processor comprising an audio codec configured to receive signals within its input bandwidth, wherein the processor is configured to; generate at least one light drive signal; transmit the at least one light drive signal to the emitter; receive the analog signal indicative of the received transmitted light from the emitter; and calculate physiological parameters of a patient based on the analog signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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generating a digital control signal representative of at least one light drive signal for an emitter, wherein the digital control signal is within the input frequency bandwidth of an audio digital-to-analog converter of an audio codec; converting the digital control signal to at least one light drive signal using the audio digital-to-analog converter; transmitting the at least one light drive signal to an emitter to generate light to be transmitted through a patient; and calculating a physiological parameter of the patient based on the light transmitted through the patient. - View Dependent Claims (17, 18, 19, 20)
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Specification