Arrhythmia discrimination using electrocardiograms sensed from multiple implanted electrodes
First Claim
1. A cardiac method, comprising:
- sensing a plurality of composite cardiac signals using a plurality of implantable electrodes;
performing a source separation using the sensed plurality of composite cardiac signals;
producing one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences based on the source separation; and
discriminating cardiac arrhythmias using the one or more cardiac signal vectors.
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Accused Products
Abstract
Cardiac monitoring and/or stimulation methods and systems provide for monitoring, diagnosing, defibrillation and pacing therapies, or a combination of these capabilities, including cardiac systems incorporating or cooperating with neuro-stimulating devices, drug pumps, or other therapies. Embodiments of the present invention relate generally to implantable medical devices employing automated cardiac activation sequence monitoring and/or tracking for arrhythmia discrimination. Embodiments of the invention are directed to devices and methods involving sensing a plurality of composite cardiac signals using a plurality of implantable electrodes. A source separation is performed using the sensed plurality of composite cardiac signals and the separation produces one or more cardiac signal vectors associated with one or more cardiac activation sequences that is indicative of ischemia. A change of the one or more cardiac signal vectors is detected using the one or more cardiac signal vectors. Cardiac arrhythmias are discriminated using the one or more cardiac signal vectors.
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Citations
21 Claims
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1. A cardiac method, comprising:
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sensing a plurality of composite cardiac signals using a plurality of implantable electrodes;
performing a source separation using the sensed plurality of composite cardiac signals;
producing one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences based on the source separation; and
discriminating cardiac arrhythmias using the one or more cardiac signal vectors. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cardiac method, comprising:
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sensing a plurality of composite cardiac signals using a plurality of implantable electrodes;
performing a source separation using the detected plurality of composite cardiac signals, the source separation producing a plurality of vectors;
selecting one or more vectors from the plurality of vectors;
storing information associated with the selected one or more vectors; and
using the stored information to discriminate cardiac arrhythmias. - View Dependent Claims (9, 10, 11)
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12. A cardiac system, comprising:
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a plurality of implantable electrodes configured for sensing a composite signal, thereby providing a plurality of composite cardiac signals;
a housing configured for implantation in a patient;
a memory provided in the housing; and
a controller provided in the housing and coupled to the memory and the plurality of implantable electrodes, the controller configured to perform a source separation using the sensed plurality of composite cardiac signals, the source separation producing one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences, and to discriminate cardiac arrhythmias using the one or more cardiac signal vectors. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification