Method and apparatus with anodal capture monitoring
First Claim
1. An implantable cardiac stimulation device comprising:
- a first chamber lead including a first electrode that electrically couples to a first chamber of a heart;
a second chamber lead including a second electrode that electrically couples to a second chamber of the heart;
a pulse generator that provides pacing pulses between the first and second electrodes with the second electrode being an anodal electrode, wherein the pacing pulses are adapted to induce a depolarization and a mechanical contraction of the first chamber of the heart; and
a capture detector adapted to detect capture of the second chamber by the pacing pulses.
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Abstract
During cross-chamber pacing, where anodal capture may not be desirable, pulses are applied between a cathode electrode in a first chamber and an anode electrode in a second chamber. A capture detector detects for capture of the second chamber by the pacing pulses. If capture of the second chamber persists, another electrode is selected as the anodal electrode. During single-chamber pacing, where anodal capture may be desirable, pulses are applied between a cathode electrode and an anode electrode associated with the same chamber. A capture detector detects for capture at both electrodes. If anodal capture is not detected, the energy of the pacing pulse is increased, until anodal capture is detected.
40 Citations
18 Claims
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1. An implantable cardiac stimulation device comprising:
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a first chamber lead including a first electrode that electrically couples to a first chamber of a heart; a second chamber lead including a second electrode that electrically couples to a second chamber of the heart; a pulse generator that provides pacing pulses between the first and second electrodes with the second electrode being an anodal electrode, wherein the pacing pulses are adapted to induce a depolarization and a mechanical contraction of the first chamber of the heart; and a capture detector adapted to detect capture of the second chamber by the pacing pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable cardiac stimulation device comprising:
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a first electrode that electrically couples to a first chamber of a heart; a second electrode that electrically couples to a second chamber of the heart; a pulse generator that provides pacing pulses between the first and second electrodes with the second electrode being an anodal electrode, wherein the pacing pulses are adapted to induce a depolarization and a mechanical contraction of the first chamber of the heart; and a capture detector adapted to detect capture of the second chamber by the pacing pulses using at least one second-chamber electrode. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification