Leadless cardiac pacemaker system with conductive communication
First Claim
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1. A cardiac pacing system comprising:
- a plurality of leadless cardiac pacemakers individually configured for implantation in electrical contact with a cardiac chamber and configured in combination for multi-chamber cardiac pacing, the leadless cardiac pacemaker plurality individually comprising at least two leadless electrodes configured for delivering cardiac pacing pulses, sensing evoked and/or natural cardiac electrical signals, and bidirectionally communicating among the leadless cardiac pacemaker plurality.
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Abstract
A cardiac pacing system comprises multiple leadless cardiac pacemakers configured for implantation in electrical contact with a cardiac chamber and configured for multi-chamber cardiac pacing. The individual leadless cardiac pacemakers comprise at least two leadless electrodes configured for delivering cardiac pacing pulses, sensing evoked and/or natural cardiac electrical signals, and communicating bidirectionally among the leadless cardiac pacemaker plurality.
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Citations
40 Claims
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1. A cardiac pacing system comprising:
a plurality of leadless cardiac pacemakers individually configured for implantation in electrical contact with a cardiac chamber and configured in combination for multi-chamber cardiac pacing, the leadless cardiac pacemaker plurality individually comprising at least two leadless electrodes configured for delivering cardiac pacing pulses, sensing evoked and/or natural cardiac electrical signals, and bidirectionally communicating among the leadless cardiac pacemaker plurality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for multi-chamber cardiac pacing comprising:
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configuring a plurality of leadless cardiac pacemakers for implantation;
configuring an atrial leadless cardiac pacemaker of the leadless cardiac pacemaker plurality for implantation in electrical contact to an atrial cardiac chamber;
waiting for an earliest occurring event of a plurality of events comprising a sensed atrial heartbeat, a communication of an event sensed on the at least two leadless electrodes encoding a pacing pulse marking a heartbeat at a ventricular leadless cardiac pacemaker, or timeout of an atrial-to-atrial (AA) escape interval;
responding to the sensed atrial heartbeat by generating an atrial pacing pulse that signals to at least one pacemaker of the leadless cardiac pacemaker plurality that an atrial heartbeat has occurred and that encodes the atrial pacing pulse with a code signifying an atrial location and a sensed event type;
timing a predetermined length AA escape interval; and
responding to timeout of the AA escape interval by delivering an atrial pacing pulse, causing an atrial heartbeat, the atrial pacing pulse identifying paced type and/or atrial location of an atrial heartbeat event. - View Dependent Claims (30, 31, 32, 33)
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34. A method for multi-chamber cardiac pacing comprising:
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configuring a plurality of leadless cardiac pacemakers for implantation;
configuring a right-ventricular leadless cardiac pacemaker of the leadless cardiac pacemaker plurality for implantation in electrical contact to a right-ventricular cardiac chamber;
waiting for an earliest occurring event of a plurality of events comprising a sensed right-ventricular heartbeat, a sensed communication of a pacing pulse marking a heartbeat at an atrial leadless cardiac pacemaker, and timeout of an escape interval;
responding to the sensed right-ventricular heartbeat by generating a right-ventricular pacing pulse that signals to at least one pacemaker of the leadless cardiac pacemaker plurality that a right-ventricular heartbeat has occurred and that encodes the right-ventricular pacing pulse with a code signifying a right-ventricular location and a sensed event type, restarting a predetermined ventricular-to-ventricular (VV) escape interval after ventricular pacing, and entering a wait state; and
responding to timeout of an escape interval by delivering a right ventricular pacing pulse, causing a right ventricular heartbeat, the right ventricular pacing pulse encoding paced type and right ventricular location of a right ventricular heartbeat event. - View Dependent Claims (35, 36, 37)
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38. A method for multi-chamber cardiac pacing comprising:
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configuring a plurality of leadless cardiac pacemakers for implantation;
configuring a left-ventricular leadless cardiac pacemaker of the leadless cardiac pacemaker plurality for implantation in electrical contact to a left-ventricular cardiac chamber and for operation in cardiac resynchronization therapy (CRT-P);
waiting at the left-ventricular leadless cardiac pacemaker for an earliest occurring event of a plurality of events comprising a sensed communication of a pacing pulse marking a heartbeat at an atrial leadless cardiac pacemaker, and timeout of a left ventricular escape interval; and
responding to timeout of the left ventricular escape interval by delivering a left ventricular pacing pulse, causing a left ventricular heartbeat, the left ventricular pacing pulse encoding type and location of a left ventricular heartbeat event. - View Dependent Claims (39, 40)
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Specification