DUAL SENSING FOR BRADY-TACHY PACEMAKER/ICD
First Claim
1. A system comprising:
- a first cardiac signal sensing circuit operable to sense at least a first intrinsic cardiac signal, wherein the first intrinsic cardiac signal is associated with a ventricular depolarization of a heart, and wherein the first sensing circuit is configured to detect bradyarrhythmia;
a second cardiac signal sensing circuit operable to sense at least a second intrinsic cardiac signal, the second intrinsic cardiac signal also associated with the ventricular depolarization of the heart, wherein the second sensing circuit has a higher signal sensing sensitivity than the first sensing circuit and is configured to detect tachyarrhythmia;
a pacing therapy circuit; and
a controller circuit coupled to the first and second cardiac signal sensing circuits and the pacing therapy circuit, the controller circuit operable to adjust a pacing therapy parameter based on outputs of the first and second cardiac signal sensing circuits.
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Abstract
A system detects events related to cardiac activity. The system comprises a primary cardiac signal sensing circuit, at least one secondary cardiac signal sensing circuit having a higher sensitivity than the primary sensing circuit, and a controller circuit coupled to the primary and secondary cardiac signal sensing circuits. The controller circuit determines a rate of depolarization using the primary sensing circuit and detects tachyarrhythmia using the rate. The controller circuit also detects tachyarrhythmia using the secondary sensing circuit and also deems the tachyarrhythmia valid if the controller circuit detects the tachyarrhythmia using both the primary and secondary sensing circuit.
22 Citations
20 Claims
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1. A system comprising:
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a first cardiac signal sensing circuit operable to sense at least a first intrinsic cardiac signal, wherein the first intrinsic cardiac signal is associated with a ventricular depolarization of a heart, and wherein the first sensing circuit is configured to detect bradyarrhythmia; a second cardiac signal sensing circuit operable to sense at least a second intrinsic cardiac signal, the second intrinsic cardiac signal also associated with the ventricular depolarization of the heart, wherein the second sensing circuit has a higher signal sensing sensitivity than the first sensing circuit and is configured to detect tachyarrhythmia; a pacing therapy circuit; and a controller circuit coupled to the first and second cardiac signal sensing circuits and the pacing therapy circuit, the controller circuit operable to adjust a pacing therapy parameter based on outputs of the first and second cardiac signal sensing circuits. - 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