Leadless cardiac pacemaker system for usage in combination with an implantable cardioverter-defibrillator
First Claim
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1. A method of operating a cardiac pacing system comprising:
- using electrodes of a subcutaneous implantable cardioverter-defibrillator (SICD) to sense cardiac signals in one or more chambers of the patient'"'"'s heart;
using the electrodes of the SICD to send a triggering signal to a leadless pacemaker by conducted communication between the SICD and the leadless pacemaker;
using a pair of electrodes of the leadless pacemaker to receive the triggering signal from the SICD;
using the pair of electrodes of the leadless pacemaker, which were used to receive the triggering signal from the SICD, to perform pacing in a chamber of the patient'"'"'s heart; and
using the pair of electrodes of the leadless pacemaker, which were used to receive the triggering signal from the SICD and to perform the pacing, to convey information to the SICD via conducted communication by discharging a capacitor, coupled across the pair of electrodes of the leadless pacemaker, to form an electrical pulse during a refractory period of the heart and encoding the information to be conveyed on the electrical pulse.
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Abstract
A cardiac pacing system comprising one or more leadless cardiac pacemakers configured for implantation in electrical contact with a cardiac chamber and configured to perform cardiac pacing functions in combination with a co-implanted implantable cardioverter-defibrillator (ICD). The leadless cardiac pacemaker comprises at least two leadless electrodes configured for delivering cardiac pacing pulses, sensing evoked and/or natural cardiac electrical signals, and bidirectionally communicating with the co-implanted ICD.
577 Citations
20 Claims
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1. A method of operating a cardiac pacing system comprising:
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using electrodes of a subcutaneous implantable cardioverter-defibrillator (SICD) to sense cardiac signals in one or more chambers of the patient'"'"'s heart; using the electrodes of the SICD to send a triggering signal to a leadless pacemaker by conducted communication between the SICD and the leadless pacemaker; using a pair of electrodes of the leadless pacemaker to receive the triggering signal from the SICD; using the pair of electrodes of the leadless pacemaker, which were used to receive the triggering signal from the SICD, to perform pacing in a chamber of the patient'"'"'s heart; and using the pair of electrodes of the leadless pacemaker, which were used to receive the triggering signal from the SICD and to perform the pacing, to convey information to the SICD via conducted communication by discharging a capacitor, coupled across the pair of electrodes of the leadless pacemaker, to form an electrical pulse during a refractory period of the heart and encoding the information to be conveyed on the electrical pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating a cardiac pacing system comprising:
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using electrodes of a subcutaneous implantable cardioverter-defibrillator (SICD) to sense signals from one or more chambers of the patient'"'"'s heart; using the electrodes of the SICD to send a triggering signal to one or more leadless pacemakers by conducted communication between the SICD and the one or more leadless pacemakers; using electrodes of the one or more leadless pacemakers to receive the triggering signal from the SICD; using the electrodes of the one or more leadless pacemakers, which were used to receive the triggering signal from the SICD, to perform pacing in one or more chambers of the patient'"'"'s heart; and using the electrodes of the one or more leadless pacemakers, which were used to receive the triggering signal from the SICD and to perform the pacing, to convey information to the SICD via conducted communication by discharging a capacitor, coupled across at least one pair of the electrodes of the one or more leadless pacemakers, to form an electrical pulse during a refractory period of the heart and encoding the information to be conveyed on the electrical pulse. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification