Implantable cardiac stimulation device and method providing dynamic sensing configurations for bichamber stimulation and tachyarrhythmia detection
First Claim
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1. An implantable cardiac stimulation device comprising:
- a sensing circuit that senses activity of a heart;
a lead system coupled to a plurality of chambers of the heart;
a cardiac rate circuit that determines a cardiac rate of the heart; and
a control circuit that causes the lead system to couple the sensing circuit to corresponding chambers of the heart when the cardiac rate is below a given rate and to a single chamber of the heart when the cardiac rate is above the given rate.
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Abstract
An implantable cardiac stimulation device provides bichamber pacing and dynamic bichamber and single chamber sensing. The device includes a sensing circuit that senses activity of a heart, a lead system coupled to a plurality of chambers of the heart, and a cardiac rate circuit that determines a cardiac rate of the heart. A control circuit causes the lead system to couple the sensing circuit to corresponding chambers of the heart to enable bichamber trigger pacing when the cardiac rate is below a given rate and to a single chamber of the heart when the cardiac rate is above the given rate to enable enhanced tachycardia sensing.
12 Citations
21 Claims
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1. An implantable cardiac stimulation device comprising:
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a sensing circuit that senses activity of a heart; a lead system coupled to a plurality of chambers of the heart; a cardiac rate circuit that determines a cardiac rate of the heart; and a control circuit that causes the lead system to couple the sensing circuit to corresponding chambers of the heart when the cardiac rate is below a given rate and to a single chamber of the heart when the cardiac rate is above the given rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An implantable cardiac stimulation device comprising:
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a sensing circuit that senses cardiac activity of a heart; a lead system coupled to a plurality of chambers of the heart; a pulse generator that provides pacing pulses to corresponding chambers of the heart responsive to the sensing circuit; a cardiac rate circuit that determines a cardiac rate of the heart; and a control circuit that causes the lead system to couple the sensing circuit to the corresponding chambers of the heart when the rate is below a maximum rate and to only one of the corresponding chambers when the rate is above the maximum rate. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification