PROCESSING AND DETECTING BASELINE CHANGES IN SIGNALS
First Claim
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1. A method for recalibrating a medical monitor based on detection of a physiological event, the method comprising:
- receiving a physiological signal from a physiological sensor attached to a subject;
calculating, using the medical monitor, a physiological parameter of the subject based on the physiological signal;
transforming, using the medical monitor, the physiological signal to generate a transformed physiological signal;
generating, using the medical monitor, a scalogram from the transformed physiological signal;
identifying, using the medical monitor, an artifact in the scalogram;
determining, using the medical monitor, at least one of size and shape of the identified artifact;
detecting, using the medical monitor, an occurrence of the physiological event based on at least one of the size and the shape of the identified artifact; and
triggering, using the medical monitor, a recalibration of the medical monitor in response to detecting the occurrence of the physiological event.
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Abstract
Systems and methods for detecting the occurrence of events from a signal are provided. A signal processing system may analyze baseline changes and changes in signal characteristics to detect events from a signal. The system may also detect events by analyzing energy parameters and artifacts in a scalogram of the signal. Further, the system may detect events by analyzing both the signal and its corresponding scalogram.
29 Citations
20 Claims
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1. A method for recalibrating a medical monitor based on detection of a physiological event, the method comprising:
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receiving a physiological signal from a physiological sensor attached to a subject; calculating, using the medical monitor, a physiological parameter of the subject based on the physiological signal; transforming, using the medical monitor, the physiological signal to generate a transformed physiological signal; generating, using the medical monitor, a scalogram from the transformed physiological signal; identifying, using the medical monitor, an artifact in the scalogram; determining, using the medical monitor, at least one of size and shape of the identified artifact; detecting, using the medical monitor, an occurrence of the physiological event based on at least one of the size and the shape of the identified artifact; and triggering, using the medical monitor, a recalibration of the medical monitor in response to detecting the occurrence of the physiological event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A medical monitor system, comprising:
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a physiological sensor attached to a subject configured to generate a physiological signal; and a medical monitor configured to; calculate a physiological parameter of the subject based on the physiological signal; transform the physiological signal to generate a transformed physiological signal; generate a scalogram from the transformed physiological signal; identify an artifact in the scalogram; determine at least one of size and shape of the identified artifact; detect an occurrence of a physiological event based on at least one of the size and the shape of the identified artifact; and trigger a recalibration of the medical monitor in response to detecting the occurrence of the physiological event. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium for use in recalibrating a medical monitor based on detection of physiological event the computer-readable medium comprising:
computer program instructions recorded thereon for causing the medical monitor to; calculate a physiological parameter of the subject based on the physiological signal; transform the physiological signal to generate a transformed physiological signal; generate a scalogram from the transformed physiological signal; identify an artifact in the scalogram; determine at least one of size and shape of the identified artifact; detect an occurrence of the physiological event based on at least one of the size and the shape of the identified artifact; and trigger a recalibration of the medical monitor in response to detecting the occurrence of the physiological event. - View Dependent Claims (20)
Specification