Method and apparatus for controlling cardiac therapy based on electromechanical timing
First Claim
1. A method of treating dyssynchrony of a patient'"'"'s heart, comprising:
- detecting electrical activation of a patient'"'"'s heart;
detecting mechanical cardiac activity resulting from the electrical activation;
determining a timing relationship between the detected electrical activation and the detected mechanical cardiac activity; and
controlling a therapy delivered to the patient based on the timing relationship to treat dyssynchrony of the patient'"'"'s heart.
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Accused Products
Abstract
Devices and methods for therapy control based on electromechanical timing involve detecting electrical activation of a patient'"'"'s heart, and detecting mechanical cardiac activity resulting from the electrical activation. A timing relationship is determined between the electrical activation and the mechanical activity. A therapy is controlled based on the timing relationship. The therapy may improve intraventricular dyssynchrony of the patient'"'"'s heart, or treat at least one of diastolic and systolic dysfunction and/or dyssynchrony of the patient'"'"'s heart, for example. Electrical activation may be detected by sensing delivery of an electrical stimulation pulse to the heart or sensing intrinsic depolarization of the patient'"'"'s heart. Mechanical activity may be detected by sensing heart sounds, a change in one or more of left ventricular impedance, ventricular pressure, right ventricular pressure, left atrial pressure, right atrial pressure, systemic arterial pressure and pulmonary artery pressure.
135 Citations
26 Claims
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1. A method of treating dyssynchrony of a patient'"'"'s heart, comprising:
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detecting electrical activation of a patient'"'"'s heart;
detecting mechanical cardiac activity resulting from the electrical activation;
determining a timing relationship between the detected electrical activation and the detected mechanical cardiac activity; and
controlling a therapy delivered to the patient based on the timing relationship to treat dyssynchrony of the patient'"'"'s heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method, comprising:
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detecting electrical activation of a patient'"'"'s heart;
detecting mechanical cardiac activity resulting from the electrical activation;
determining a timing relationship between the detected electrical activation and the detected mechanical cardiac activity; and
controlling a therapy delivered to the patient based on the timing relationship. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. An implantable cardiac device, comprising:
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means for detecting electrical activation of a patient'"'"'s heart;
means for detecting mechanical cardiac activity resulting from the electrical activation;
means for determining a timing relationship between the detected electrical activation and the detected mechanical cardiac activity; and
means for controlling a therapy delivered to the patient based on the timing relationship.
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Specification