Endocardial pacing devices and methods useful for resynchronization and defibrillation
First Claim
1. An implantable medical device comprising:
- an electrostimulation circuit configured to;
generate at least partially concurrent electrostimulation pulses of opposing polarity to be delivered via electrodes positioned at a target region at or near a bundle of His in a right ventricle of a heart, the electrostimulation pulses including at least two pulses occurring sufficiently proximate one another in at least one of time or distance to elicit myocardium capture near the target region at or near the bundle of His; and
generate a defibrillation signal.
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Accused Products
Abstract
According to one aspect, various methods and apparatus are used for treating a condition of a patient'"'"'s heart, and for monitoring cardiac operation. In one approach consistent therewith, an electrode arrangement is placed in a right ventricle of the heart. The electrode arrangement is used to capture the myocardium for re-synchronization of the left and right ventricles by providing first and second signal components having opposite polarity on respective electrodes. The electrode arrangement is connected to an implantable CRM device that has the capability of pacing/sensing atrium, pacing/sensing ventricles, and deliver defibrillation therapy from the right side of the heart. The CRM device captures ventricular contractions to treat conduction abnormalities in one or more of the ventricles.
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Citations
21 Claims
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1. An implantable medical device comprising:
an electrostimulation circuit configured to; generate at least partially concurrent electrostimulation pulses of opposing polarity to be delivered via electrodes positioned at a target region at or near a bundle of His in a right ventricle of a heart, the electrostimulation pulses including at least two pulses occurring sufficiently proximate one another in at least one of time or distance to elicit myocardium capture near the target region at or near the bundle of His; and generate a defibrillation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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generating at least partially concurrent electrostimulation pulses of opposing polarity to be delivered via electrodes positioned at a target region at or near the bundle of His in a right ventricle of a heart, the electrostimulation pulses including at least two pulses occurring sufficiently proximate one another in at least one of time or distance to elicit myocardium capture near the target region at or near the bundle of His; and generating a defibrillation signal in response to a sensed signal indicating the heart is in a defibrillation. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A processor-readable medium, including instructions that, when performed by a processor, cause the processor to:
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generate at least partially concurrent electrostimulation pulses of opposing polarity to be delivered via electrodes positioned at a target region at or near the bundle of His in a right ventricle of a heart, the electrostimulation pulses including at least two pulses occurring sufficiently proximate one another in at least one of time or distance to elicit myocardium capture near the target region at or near the bundle of His; and generate a defibrillation signal in response to a sensed signal indicating the heart is in a defibrillation. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification