DETECTION OF WAVEFORM ARTIFACT
First Claim
1. Method for detecting signal artifact in a physiological signal waveform acquired by a physiological sensor, the method comprising:
- sensing a signal waveform in a patient using the physiological sensor;
identifying a fiducial point associated with the sensed waveform;
establishing a value of an expected point using the fiducial point;
establishing an artifact detection threshold;
detecting signal artifact in response to the expected point value and the established threshold; and
rejecting at least a portion of the signal waveform in response to detecting signal artifact.
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Accused Products
Abstract
A medical device system including a physiological sensor is configured to perform a method for detecting signal artifact in a signal waveform acquired by the sensor. A signal waveform is sensed in a patient using the physiological sensor and a fiducial point associated with the sensed waveform is identified. A point value is established using the fiducial point. Signal artifact is detected in response to the established point value and an established threshold, and at least a portion of the signal waveform is rejected in response to detecting signal artifact.
30 Citations
27 Claims
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1. Method for detecting signal artifact in a physiological signal waveform acquired by a physiological sensor, the method comprising:
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sensing a signal waveform in a patient using the physiological sensor; identifying a fiducial point associated with the sensed waveform; establishing a value of an expected point using the fiducial point; establishing an artifact detection threshold; detecting signal artifact in response to the expected point value and the established threshold; and rejecting at least a portion of the signal waveform in response to detecting signal artifact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A medical device system for monitoring a physiological signal in a patient and detecting artifact in the physiological signal, the system comprising:
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a sensor for sensing a physiological signal waveform; and a processor configured to receive the sensed signal waveform, identify a fiducial point associated with the sensed waveform, establish a value of an expected point using the fiducial point, establish an artifact detection threshold, detect signal artifact in response to the expected point value and the established threshold, and reject at least a portion of the signal waveform in response to detecting the signal artifact. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A computer-readable medium storing a set of instructions which cause a medical device system comprising a physiological sensor to perform a method, the method comprising:
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sensing a signal waveform in a patient using the physiological sensor; identifying a fiducial point associated with the sensed waveform; establishing a point value using the fiducial point; establishing an artifact detection threshold; detecting signal artifact in response to the established point value and the established threshold; and rejecting at least a portion of the signal waveform in response to detecting signal artifact.
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Specification