METHOD AND APPARATUS FOR INTRACHAMBER RESYNCHRONIZATION
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Abstract
Methods, apparatus, and systems are provided to control contraction of the heart. At least one sensing element receives signals indicating electrical activity of sinus rhythm of the heart. Based on the received signals, the progress of contraction of the heart is determined. Based on the progress of contraction, the chamber of the heart may then be stimulated at a plurality of locations. In another embodiment, a plurality of electrodes are implanted in the left ventricle to stimulate at multiple locations in the left ventricle for the purpose of improving hemodynamic performance and increasing cardiac output in a patient who is suffering from congestive heart failure.
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Citations
20 Claims
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1. (canceled)
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2. A method to improve hemodynamic efficiency of a human heart, comprising:
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monitoring, with a processing circuit, contraction progress in a left ventricle of the heart based on an intrinsic signal received from at least one of a first electrode implanted in the left ventricle and a second electrode implanted in the left ventricle and spaced apart from the first electrode; generating, with a generator circuit and based on the monitored contraction progress, a sub-threshold pre-excitation signal to be delivered to the left ventricle via at least one of the first and second electrodes to slow contraction of the left ventricle; and generating, with the generator circuit, a signal to stimulate said left ventricle through said first and second electrodes based on the monitored contraction progress. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. A device to improve hemodynamic efficiency of a human heart comprising:
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a processor configured to monitor contraction progress in a left ventricle of the heart based on an intrinsic signal received from at least one of a first electrode implanted in the left ventricle and a second electrode implanted in the left ventricle and spaced apart from the first electrode; and a generator circuit configured to; generate, based on the monitored contraction progress, a sub-threshold pre-excitation signal to be delivered to the left ventricle via at least one of the first and second electrodes to slow contraction of the left ventricle, and generate a signal to stimulate said left ventricle through said first and second electrodes based on the monitored contraction progress. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification