Automatic capture verification in multisite cardiac pacing
First Claim
1. A method for verifying capture of a stimulation pulse delivered to a pre-selected chamber of a patient'"'"'s heart, by a cardiac rhythm management device of the type having means for sensing cardiac electrogram signals, a programmable controller coupled to receive the sensed electrogram signals, and stimulation means controlled by the controller for applying cardiac stimulation pulses to a patient'"'"'s heart in response to control signals from the controller in accordance with predetermined parameters, wherein the stimulation pulse is delivered to the preselected chamber on a demand or continuous basis, said method comprising the steps of:
- (a) positioning at least three electrodes in at least one of an electrically continuous area of the heart'"'"'s atriums and an electrically continuous area of the heart'"'"'s ventricles;
(b) setting predetermined parameters of the cardiac rhythm management device;
(c) delivering stimulation pulses in accordance with the predetermined parameters;
(d) transmitting from the cardiac rhythm management device a test stimulation pulse having a predetermined output energy to a predetermined first electrode; and
(e) sensing for a depolarization waveform at at least two of the other electrodes, wherein a sensed depolarization indicates capture.
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Accused Products
Abstract
An implantable device and method of cardiac stimulation that automatically verifies capture and a threshold effectiveness of stimulation of a cardiac stimulator. During predetermined periods, the device utilizes 2 or more pacing/sensing electrodes positioned within an electrically continuous area of the heart, wherein one electrode is used to provide a pacing stimulus while the other electrode or electrodes are used to verify capture or a threshold effective strength. A predetermined blanking period is provided to avoid detection of the electrical stimulus transmitted to one electrode from a pulse generator. After expiration of the predetermined blanking period the remaining electrodes detect depolarization of the surrounding tissue.
280 Citations
11 Claims
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1. A method for verifying capture of a stimulation pulse delivered to a pre-selected chamber of a patient'"'"'s heart, by a cardiac rhythm management device of the type having means for sensing cardiac electrogram signals, a programmable controller coupled to receive the sensed electrogram signals, and stimulation means controlled by the controller for applying cardiac stimulation pulses to a patient'"'"'s heart in response to control signals from the controller in accordance with predetermined parameters, wherein the stimulation pulse is delivered to the preselected chamber on a demand or continuous basis, said method comprising the steps of:
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(a) positioning at least three electrodes in at least one of an electrically continuous area of the heart'"'"'s atriums and an electrically continuous area of the heart'"'"'s ventricles; (b) setting predetermined parameters of the cardiac rhythm management device; (c) delivering stimulation pulses in accordance with the predetermined parameters; (d) transmitting from the cardiac rhythm management device a test stimulation pulse having a predetermined output energy to a predetermined first electrode; and (e) sensing for a depolarization waveform at at least two of the other electrodes, wherein a sensed depolarization indicates capture. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for verifying capture of a stimulation pulse delivered to a pre-selected chamber of a patient'"'"'s heart, by a cardiac rhythm management device of the type having means for sensing cardiac electrogram signals, a programmable controller coupled to receive the sensed electrogram signals, and stimulation means controlled by the controller for applying cardiac stimulation pulses to a patient'"'"'s heart in response to control signals from the controller in accordance with predetermined parameters, wherein the stimulation pulse is delivered to the preselected chamber on a demand or continuous basis, said method comprising the steps of:
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(a) positioning a plurality of electrodes in at least one of an electrically continuous area of a heart'"'"'s atriums and an electrically continuous area of the heart'"'"'s ventricles; (b) setting predetermined parameters of the cardiac rhythm management device; (c) delivering stimulation pulses in accordance with the predetermined parameters; (d) transmitting from the cardiac rhythm management device a test stimulation pulse having a predetermined output energy to a predetermined electrode; and (e) sensing for a depolarization waveform at predetermined electrodes, wherein a sensed depolarization indicates capture. - View Dependent Claims (8, 9, 10, 11)
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Specification