Systems and methods for enhancing cardiac signal features used in morphology discrimination
First Claim
1. A method for classifying a cardiac event, comprising:
- sensing a signal comprising a cardiac signal component and a noise signal component;
processing the sensed signal to preferentially alter morphology of the cardiac signal component of the sensed signal, the altered morphology of the cardiac signal component enhancing detection of one or more features of the cardiac signal component;
detecting the one or more features; and
classifying the cardiac event using the one or more detected features.
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Accused Products
Abstract
Methods and devices used to classify cardiac events based on morphological analysis of sensed signals are described. A signal comprising a cardiac signal component and a noise signal component is sensed. The sensed signal is processed to preferentially alter morphology of the cardiac signal component. The altered morphology of the cardiac signal component enhances detection of one or more features of the cardiac signal component. The features of the cardiac signal component are detected and the cardiac event is classified using the detected features. Processing the sensed signal may involve the use of adaptable signal processing parameters. For example, the signal processing parameters may be selected to accentuate one or more desirable features of the cardiac signal component or to mitigate one or more undesirable features of the cardiac signal component.
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Citations
26 Claims
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1. A method for classifying a cardiac event, comprising:
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sensing a signal comprising a cardiac signal component and a noise signal component; processing the sensed signal to preferentially alter morphology of the cardiac signal component of the sensed signal, the altered morphology of the cardiac signal component enhancing detection of one or more features of the cardiac signal component; detecting the one or more features; and classifying the cardiac event using the one or more detected features. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical system, comprising:
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sensing circuitry configured to sense a signal comprising a cardiac signal component and a noise component; signal processing circuitry configured to process the sensed signal to alter morphology of the cardiac signal component of the sensed signal, the altered cardiac signal component enhancing detection of one or more features of the cardiac signal component; a feature detector configured to detect the one or more features of the cardiac signal component; and a cardiac event processor configured to classify a cardiac event using the one or more detected features. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A medical system, comprising:
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sensing circuitry configured to sense a signal comprising a cardiac signal component and a noise component; means for processing the sensed signal to alter morphology of the cardiac signal component of the sensed signal, the altered morphology of the cardiac signal component enhancing detection of one or more features of the cardiac signal component; a feature detector configured to detect the one or more features; and a cardiac event processor configured to classify the cardiac event using the one or more detected features. - View Dependent Claims (24, 25, 26)
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Specification