Physiological monitor
First Claim
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1. A method of improving signal quality in a physiological measurement device, the method comprising:
- obtaining a plurality of signals indicative of at least one physiological condition from a plurality of measurement sites of a patient;
choosing at least one signal of the plurality of signals based on signal quality;
calculating a physiological measurement based on the at least one signal.
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Abstract
A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. A patient monitor uses the plurality of signals to reduce the effects of noise.
120 Citations
19 Claims
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1. A method of improving signal quality in a physiological measurement device, the method comprising:
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obtaining a plurality of signals indicative of at least one physiological condition from a plurality of measurement sites of a patient;
choosing at least one signal of the plurality of signals based on signal quality;
calculating a physiological measurement based on the at least one signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A physiological measurement system for improving the signal quality of a signal indicative of a physiological condition, the system comprising:
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a plurality of inputs configured to accept signals from a plurality of physiological sensors located at a plurality of measurement sites of a patient;
a signal processor configured to choose at least one of the plurality of signals based on signal quality and configured to calculate a physiological measurement based on at least one of the chosen plurality of signals. - View Dependent Claims (9, 10, 11)
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12. A method of processing a plurality of signals indicative of a physiological condition in order to reduce the effects of poor signal quality, the method comprising:
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obtaining a plurality of signals indicative of at least one physiological condition using a plurality of non-invasive optical sensors located at a plurality of measurement sites of a patient;
processing the plurality of signals in order to reduce the effects of poor signal quality;
calculating a physiological measurement based at least in part on the processed plurality of signals. - View Dependent Claims (13, 14, 15)
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16. A physiological measurement system for processing a plurality of signals indicative of a physiological condition in order to reduce the effects of poor signal quality, the system comprising:
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a plurality of physiological sensors located at a plurality of measurement sites of a patient configured to obtain a plurality of signals indicative of a physiological condition using a plurality of non-invasive optical sensors located at a plurality of measurement sites of a patient;
a signal processor configured to process the plurality of signals in order to reduce the effects of poor signal quality and calculate a physiological measurement based on processed plurality of signals. - View Dependent Claims (17, 18, 19)
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Specification