Plethysmograph pulse recognition processor
First Claim
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1. A method for identifying pulses in a plethysmograph waveform comprising:
- acquiring plethysmograph waveform data comprised of data related to one or more signals received from a light-sensitive detector that detects light having a plurality of wavelengths transmitted through body tissue carrying pulsing blood;
selecting data representing potential pulses from within the plethysomgraph waveform data;
determining time domain features of the data representing potential pulses; and
utilizing said time domain features to identify which of the data representing potential pulses corresponds to data representing physiologically acceptable pulses.
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Abstract
A time domain rule-based processor provides recognition of individual pulses in a pulse oximeter-derived photo-plethysmograph waveform.
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Citations
24 Claims
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1. A method for identifying pulses in a plethysmograph waveform comprising:
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acquiring plethysmograph waveform data comprised of data related to one or more signals received from a light-sensitive detector that detects light having a plurality of wavelengths transmitted through body tissue carrying pulsing blood;
selecting data representing potential pulses from within the plethysomgraph waveform data;
determining time domain features of the data representing potential pulses; and
utilizing said time domain features to identify which of the data representing potential pulses corresponds to data representing physiologically acceptable pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. A device for monitoring physiological parameters of a patient, the device comprising a processor capable of identifying a plurality of potential pulses within a plethysmograph waveform comprised of one or more signals received from a light-sensitive detector that detects light having a plurality of wavelengths transmitted through body tissue carrying pulsing blood, wherein said processor is also capable of identifying a physiologically acceptable pulse from among said plurality of potential pulses by evaluating differences between a segment of said plethysmograph waveform corresponding to a given potential pulse and an approximation of said segment.
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