CROSS-CHANNEL NOISE DETECTOR IN IMPLANTABLE MEDICAL DEVICES
First Claim
1. An apparatus comprising:
- a primary cardiac signal sensing circuit configured to sense at least a first cardiac signal, the primary cardiac signal sensing circuit including or configured to be coupled to at least first and second implantable electrodes;
at least one secondary cardiac signal sensing circuit configured to sense at least a second cardiac signal, the secondary cardiac signal sensing circuit including or configured to be coupled to at least a third implantable electrode, different from the first and second electrode, configured to deliver high-energy shock therapy; and
an arrhythmia detection circuit communicatively coupled to the primary and secondary cardiac signal sensing circuits, wherein the arrhythmia detection circuit is configured to;
detect tachyarrhythmia using the primary sensing circuit;
determine correspondence between events sensed with the primary sensing circuit and events sensed with the secondary sensing circuit; and
deem whether a detected rhythm is indicative of noise or is indicative of an arrhythmia according to the determined correspondence.
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Accused Products
Abstract
An apparatus comprises a primary cardiac signal sensing circuit to sense a first cardiac signal, a secondary cardiac signal sensing to sense a second cardiac signal, and an arrhythmia detection circuit. The primary sensing circuit includes at least first and second implantable electrodes, and the secondary sensing circuit includes a third implantable electrode to deliver high-energy shock therapy. The arrhythmia detection circuit detects tachyarrhythmia using the primary sensing circuit, determines correspondence between events sensed with the primary sensing circuit and events sensed with the secondary sensing circuit, and deems whether a detected rhythm is indicative of noise or is indicative of an arrhythmia according to the determined correspondence.
29 Citations
22 Claims
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1. An apparatus comprising:
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a primary cardiac signal sensing circuit configured to sense at least a first cardiac signal, the primary cardiac signal sensing circuit including or configured to be coupled to at least first and second implantable electrodes; at least one secondary cardiac signal sensing circuit configured to sense at least a second cardiac signal, the secondary cardiac signal sensing circuit including or configured to be coupled to at least a third implantable electrode, different from the first and second electrode, configured to deliver high-energy shock therapy; and an arrhythmia detection circuit communicatively coupled to the primary and secondary cardiac signal sensing circuits, wherein the arrhythmia detection circuit is configured to; detect tachyarrhythmia using the primary sensing circuit; determine correspondence between events sensed with the primary sensing circuit and events sensed with the secondary sensing circuit; and deem whether a detected rhythm is indicative of noise or is indicative of an arrhythmia according to the determined correspondence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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sensing a first cardiac signal using a primary sensing circuit, wherein the primary sensing circuit includes or is configured to be coupled to a first and a second implantable electrode; sensing a second cardiac signal using at least one secondary sensing circuit, the secondary sensing circuit including or configured to be coupled to at least a third implantable electrode, different from the first and second electrodes, configured to deliver high-energy shock therapy; detecting tachyarrhythmia using the primary sensing circuit; determining correspondence between events in the first cardiac signal sensed with the primary sensing circuit and events in the second cardiac signal sensed with the secondary sensing circuit; and deeming whether the detected rhythm is indicative of noise or is indicative of an arrhythmia according to the determined correspondence. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification