Systems and methods for determining physiological information using autocorrelation with gaps
AssigneeNellcor Puritan Bennett Ireland
InventorsPaul S. Addison, James Dripps, James Ochs, James Watson
Life of this patent
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Abstract
A patient monitoring system may receive a physiological signal having gap portions in the received data. The gap portions may be identified and a plurality of morphology metric signals may be modified based on the identified gap portions. The morphology metric signals may be modified based on the identified gaps, and a combined autocorrelation sequence may be generated based on the modified morphology metric signals. The combined autocorrelation sequence may be used to determine physiological information.
Claims20
A method for determining physiological information, the method comprising:
- receiving a physiological signal;
- identifying, using processing equipment, a gap portion for the physiological signal;
- generating, using the processing equipment, a morphology metric signal based on the physiological signal;
- modifying, using the processing equipment, the morphology metric signal based on the gap portion;
- generating, using the processing equipment, an autocorrelation sequence based on the modified morphology metric signal;
- and
- determining, using the processing equipment, the physiological information based on the autocorrelation sequence.
A method for determining physiological information, the method comprising:
- receiving a physiological signal;
- identifying, using processing equipment, a gap portion for the physiological signal;
- generating, using the processing equipment, a morphology metric signal based on the physiological signal;
- generating, using the processing equipment, a modified autocorrelation sequence based on the morphology metric signal and the gap portion;
- and
- determining, using the processing equipment, physiological information based on the modified autocorrelation sequence.
A patient monitoring system comprising:
- an interface configured to receive a physiological signal;
- and
- a processor configured to:
- identify a gap portion for the physiological signal;
- generate a morphology metric signal based on the physiological signal;
- modify the morphology metric signal based on the gap portion;
- generate an autocorrelation sequence based on the modified morphology metric signal;
- and
- determine the physiological information based on the autocorrelation sequence.
Dependencies are inferred from the claim text.