Closed loop cardiac resynchronization therapy using cardiac activation sequence information
First Claim
1. A cardiac method, comprising:
- sensing a plurality of composite cardiac signals using a plurality of electrodes, the electrodes configured for implantation in a patient;
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
adjusting a cardiac resynchronization therapy using one or both of the one or more cardiac signal vectors and the signals associated with the one or more cardiac signal vectors.
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Accused Products
Abstract
Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed to detect, monitor, track, and/or trend closed-loop cardiac resynchronization therapy using cardiac activation sequence information. Devices and methods involve sensing a plurality of composite cardiac signals using a plurality of electrodes, the electrodes configured for implantation in a patient. A source separation is performed 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. A cardiac resynchronization therapy is adjusted using one or both of the one or more cardiac signal vectors and the signals associated with the one or more cardiac signal vectors. In further embodiments, the cardiac resynchronization therapy may be initiated, terminated, or one or more parameters of the resynchronization therapy may be altered.
320 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 electrodes, the electrodes configured for implantation in a patient; 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 adjusting a cardiac resynchronization therapy using one or both of the one or more cardiac signal vectors and the signals associated with the one or more cardiac signal vectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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 signals; a housing configured for implantation in a patient; a controller provided in the housing and coupled to the plurality of implantable electrodes; and a memory provided in the housing and coupled to the controller; wherein the controller is configured to perform a source separation using the sensed plurality of composite 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 control a cardiac resynchronization therapy using the one or more cardiac signal vectors. - View Dependent Claims (19, 20)
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21. An implantable cardiac device, comprising:
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means for sensing a plurality of composite cardiac signals using a plurality of implantable electrodes; means for performing 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 means for coordinating a cardiac resynchronization therapy using the one or more cardiac signal vectors.
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Specification