Implantable cardiac monitor upgradeable to pacemaker or cardiac resynchronization device
First Claim
1. An implantable medical device, comprising:
- a sensing circuit adapted to sense an electrogram, the sensing circuit having a set of cutoff frequencies for filtering the sensed electrogram, the set of cutoff frequencies programmed to be a first set of values and a second set of values at different times, the first set of values suitable for far-field electrogram sensing, the second set of values suitable for intracardiac electrogram sensing and different from the first set of values;
a pacing circuit; and
a processor coupled to the sensing circuit and the pacing circuit, the processor including a cardiac monitor controller that is upgradeable to a pacemaker controller by programming the implantable medical device to configure the implantable medical device from an implantable cardiac monitor to an implantable pacemaker,wherein the implantable medical device is configured to operate as the implantable cardiac monitor and the implantable pacemaker at said different times, the pacing circuit is adapted to be inactive when the implantable medical device is configured to be the implantable cardiac monitor and capable of producing pacing pulses when the implantable medical device is configured to be the implantable pacemaker, and the set of cutoff frequencies of the sensing circuit is programmed to the first set of values while the pacing circuit is inactive and programmed to the second set of values while the pacing circuit is capable of producing pacing pulses.
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Abstract
An implantable cardiac monitor upgradeable to an implantable pacemaker or an implantable cardiac resynchronization device allows the use of a single implantable medical device for monitoring cardiac conditions and later, if needed, for cardiac pacing. The implantable medical device includes a circuit that can be configured, by programming through an external programmer, to either the implantable cardiac monitor or the implantable pacemaker. The implantable medical device is first configured to and used as the implantable cardiac monitor for acquisition of physiological data indicative of a need for a pacing therapy. If the pacing therapy is to follow, the implantable medical device is reconfigured from the implantable cardiac monitor to the implantable pacemaker, thus eliminating the need of using two implantable medical devices.
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Citations
20 Claims
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1. An implantable medical device, comprising:
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a sensing circuit adapted to sense an electrogram, the sensing circuit having a set of cutoff frequencies for filtering the sensed electrogram, the set of cutoff frequencies programmed to be a first set of values and a second set of values at different times, the first set of values suitable for far-field electrogram sensing, the second set of values suitable for intracardiac electrogram sensing and different from the first set of values; a pacing circuit; and a processor coupled to the sensing circuit and the pacing circuit, the processor including a cardiac monitor controller that is upgradeable to a pacemaker controller by programming the implantable medical device to configure the implantable medical device from an implantable cardiac monitor to an implantable pacemaker, wherein the implantable medical device is configured to operate as the implantable cardiac monitor and the implantable pacemaker at said different times, the pacing circuit is adapted to be inactive when the implantable medical device is configured to be the implantable cardiac monitor and capable of producing pacing pulses when the implantable medical device is configured to be the implantable pacemaker, and the set of cutoff frequencies of the sensing circuit is programmed to the first set of values while the pacing circuit is inactive and programmed to the second set of values while the pacing circuit is capable of producing pacing pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification