ATRIAL SYNCHRONIZED VENTRICULAR PACING SYSTEM USING INTRACARDIAC PACEMAKER AND EXTRACARDIAC ATRIAL SENSING
First Claim
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1. A method for providing pacing stimuli to a heart of a patient, the method comprising:
- sensing a P-wave by an implantable sensing device having housing-based electrodes, the P-wave sensed via the housing-based electrodes when the implantable sensing device is implanted outside the cardiovascular system;
generating a trigger signal by the sensing device in response to sensing the P-wave;
detecting the trigger signal by an intracardiac pacemaker; and
scheduling a ventricular pacing pulse by the intracardiac pacemaker in response to the detected trigger signal.
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Abstract
An implantable medical device system includes an extracardiac sensing device and an intracardiac pacemaker. The sensing device senses a P-wave attendant to an atrial depolarization of the heart via housing-based electrodes carried by the sensing device when the sensing device is implanted outside the cardiovascular system and sends a trigger signal to the intracardiac pacemaker in response to sensing the P-wave. The intracardiac pacemaker detects the trigger signal and schedules a ventricular pacing pulse in response to the detected trigger signal.
89 Citations
30 Claims
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1. A method for providing pacing stimuli to a heart of a patient, the method comprising:
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sensing a P-wave by an implantable sensing device having housing-based electrodes, the P-wave sensed via the housing-based electrodes when the implantable sensing device is implanted outside the cardiovascular system; generating a trigger signal by the sensing device in response to sensing the P-wave; detecting the trigger signal by an intracardiac pacemaker; and scheduling a ventricular pacing pulse by the intracardiac pacemaker in response to the detected trigger signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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14. An implantable medical device system, comprising:
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an extracardiac sensing device comprising; a housing; a plurality of housing-based electrodes; a sensing module enclosed by the housing and configured to sense a P-wave attendant to an atrial activation of a patient'"'"'s heart via the housing-based electrodes when the sensing device is implanted outside the cardiovascular system; a trigger signal generator; and a control module configured to control the trigger signal generator to transmit a trigger signal in response to the sensing module sensing the P-wave; and an intracardiac pacemaker comprising; a trigger signal detector; a pacing pulse generator; and a control module configured to schedule a pacing pulse in response to the trigger signal detector detecting the trigger signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An implantable, extracardiac sensing device, comprising:
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a housing; a plurality of housing-based electrodes; a sensing module configured to sense cardiac electrical events via the housing-based electrodes when the extracardiac sensing device is implanted outside a patient'"'"'s cardiovascular system; a trigger signal generator configured to transmit a wireless trigger signal to an intracardiac pacemaker to cause the pacemaker to deliver a cardiac pacing pulse; a signal detector configured to detect a wireless event signal transmitted to the sensing signal detector by the intracardiac pacemaker; and a control module coupled to the sensing module, the trigger signal generator and the signal detector and configured to; control the trigger signal generator to generate the wireless trigger signal in response to the sensing module sensing a cardiac electrical event; set a blanking interval to inhibit sensing a next cardiac electrical event during the blanking interval in response to the signal detector detecting the wireless event signal transmitted by the intracardiac pacemaker.
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30. A non-transitory computer readable storage medium storing instructions which, when executed by a control module of an extracardiac sensing device and a control module of an intracardiac pacemaker of an implantable medical device system, cause the system to:
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sense a P-wave attendant to an atrial depolarization of the heart by the sensing device via housing-based electrodes carried by the sensing device when the sensing device is implanted outside a patient'"'"'s cardiovascular system; send a trigger signal from the sensing device to the intracardiac pacemaker; detect the trigger signal by the pacemaker; and schedule a ventricular pacing pulse by the intracardiac pacemaker in response to the detected trigger signal.
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Specification