Health monitoring systems and methods
First Claim
Patent Images
1. A method for determining a health parameter including one or more of detecting heart beats or determining pulse oxygenation;
- the method comprising one or more of;
a) detecting heart beats;
using ECG,using green or another wavelength, orusing a weighted combination of wavelengths;
b) determining pulse oxygenation through generating one or more of a first pulse shape template or a dataset representing a first pulse shape, including using;
green wavelengths,an ensemble average of green over approximately the same amount of time as for either red or IR,an ensemble average of multiple wavelengths over approximately the same amount of time as for either red or IR, oran ensemble average of multiple wavelengths over significantly longer than the amount of time as for either red or IR;
ora long time average of a single wavelength of any color;
c) obtaining a red pulse shape template or dataset representing same and an IR pulse shape template or dataset representing same, and comparing these or one or the other or each of these to the first pulse shape template; and
,d) correlating via linear regression between a red ensemble average with a first pulse shape template or dataset to an IR ensemble average with the first pulse shape template or dataset, where the ratio of these correlations is then used as the AC ratio for oxygen saturation.
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Abstract
Systems, methods and devices for reducing noise in health monitoring including monitoring systems, methods and/or devices receiving a health signal and/or having at least one electrode or sensor for health monitoring.
306 Citations
20 Claims
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1. A method for determining a health parameter including one or more of detecting heart beats or determining pulse oxygenation;
- the method comprising one or more of;
a) detecting heart beats; using ECG, using green or another wavelength, or using a weighted combination of wavelengths; b) determining pulse oxygenation through generating one or more of a first pulse shape template or a dataset representing a first pulse shape, including using; green wavelengths, an ensemble average of green over approximately the same amount of time as for either red or IR, an ensemble average of multiple wavelengths over approximately the same amount of time as for either red or IR, or an ensemble average of multiple wavelengths over significantly longer than the amount of time as for either red or IR;
ora long time average of a single wavelength of any color; c) obtaining a red pulse shape template or dataset representing same and an IR pulse shape template or dataset representing same, and comparing these or one or the other or each of these to the first pulse shape template; and
,d) correlating via linear regression between a red ensemble average with a first pulse shape template or dataset to an IR ensemble average with the first pulse shape template or dataset, where the ratio of these correlations is then used as the AC ratio for oxygen saturation. - View Dependent Claims (2, 3, 4, 5)
- the method comprising one or more of;
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6. A method for health monitoring comprising:
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sensing ECG signals by one or more ECG sensors and photoplethysmograph PPG signals by one or more optical sensors disposed on a single health monitoring device disposed on a body; using a processor for; determining from one or more or a combination of a user'"'"'s ECG or a first photoplethysmogram PPG signal or a weighted combination of wavelengths when heart beats occur, the weighted combination being of any number of different wavelengths of light as sensed by the optical sensors; time averaging the first photoplethysmogram PPG signal to generate a first pulse shape template or dataset; time averaging each of two additional photoplethysmogram PPG signals correlated to the beat locations;
one of the additional signals being a red signal, the other additional signal being an IR signal;generating ensemble averages for each of the red and IR signals to obtain red and IR ensemble averages; comparing each of the red and IR ensemble averages to the first pulse shape template or dataset to obtain red and IR ensemble average comparisons; using a linear regression of each of the red and IR ensemble average comparisons to the first pulse shape template or dataset to determine the linear gain factor between the two signals; determining from the linear gain factor the patient oxygen saturation. - View Dependent Claims (7, 8)
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9. A method comprising:
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selecting a possible gain value, multiplying the average frame signal by it, and determining the residual error with respect to an average frame of a different wavelength; whereby the gain between red frame signals and infrared (IR) frame signals are found by; generating one or more of green or other color PPG signals or a long time average of red and IR signals; including the one or more of green or other color PPG signals or the long time average of red and IR signals with the red frame signals and infrared (IR) frame signals to create two frames; averaging the two frames together first to provide a signal with reduced noise; performing linear regression of the red versus combined with green or long time average of red and IR signals and infrared (IR) versus combined with green or long time average of red and IR signals;
or linear regression of red versus green or long time average of red and IR signals and infrared (IR) versus green or long time average of red and IR signals;
or linear regression by combining green or long time average of red and IR signals with each of the red frame signals and infrared (IR) frame signals and using the ratio of these results; andthen finding the ratio of the two corresponding results. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification