SYSTEMS AND METHODS FOR NORMALIZING A PLETHYSMOGRAPH SIGNAL FOR IMPROVED FEATURE ANALYSIS
First Claim
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1. A method for normalizing a signal using a continuous non-invasive blood pressure monitoring system, comprising:
- detecting a PPG signal at a first time and a second time with a sensor coupled to a processor;
normalizing, using the processor, the PPG signal at the second time;
comparing, using the processor, the normalized PPG signal and the PPG signal at the first time; and
generating a signal, using the processor, if the normalized PPG signal and the PPG signal at the first time do not correspond.
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Abstract
The present disclosure relates to systems and methods for analyzing and normalizing signals, such as PPG signals, for use in patent monitoring. The PPG signal may be detected using a continuous non-invasive blood pressure monitoring system and the normalized signals may be used to determine whether a recalibration of the system should be performed.
127 Citations
14 Claims
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1. A method for normalizing a signal using a continuous non-invasive blood pressure monitoring system, comprising:
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detecting a PPG signal at a first time and a second time with a sensor coupled to a processor; normalizing, using the processor, the PPG signal at the second time; comparing, using the processor, the normalized PPG signal and the PPG signal at the first time; and generating a signal, using the processor, if the normalized PPG signal and the PPG signal at the first time do not correspond. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for analyzing PPG signals in patient monitoring, comprising:
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a sensor having at least one emitter and at least one detector configured to detect a PPG signal, the sensor coupled to a processor, the processor capable of; detecting a PPG signal at a first time and a second time with the sensor; normalizing the PPG signal at the second time; comparing the normalized PPG signal and the PPG signal at the first time; and generating a signal if the normalized PPG signal and the PPG signal at the first time do not correspond. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification