Atrial flutter cardioverter and method
AssigneeInControl, Inc.
InventorsGregory M. Ayers, John M. Adams
Life of this patent
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Abstract
An implantable atrial defibrillator includes a lead system having a plurality of electrodes to deliver a cardioverting pulse to atria of a heart, for sensing A waves of the heart, and for sensing R waves of the heart. A first detector detects the A waves sensed by the lead system and a second detector detects the R waves sensed by the lead system. An inhibit stage defines an inhibit time period responsive to each detected R wave and an output provides the cardioverting pulse to the lead system responsive to an A wave being detected. The inhibit stage precludes provision of the cardioverting pulse during each inhibit time period.
Claims12
An atrial cardioverter for cardioverting atrial flutter comprising:
- a lead system having a plurality of electrodes to deliver a cardioverting pulse to atria of a heart, for sensing A waves of the heart, and for sensing R waves of the heart;
- an atrial flutter detector;
- a first detector for detecting the A waves sensed by the lead system;
- a second detector for detecting the R waves sensed by the lead system;
- inhibit means for defining an inhibit time period responsive to each detected R wave;
- and
- output means for providing the cardioverting pulse to the lead system when the heart is in atrial flutter and responsive to an A wave being detected, said inhibit means precluding provision of the cardioverting pulse during each inhibit time period.
A method of cardioverting atrial flutter including the steps of:
- detecting atrial flutter;
- detecting A waves of a heart;
- detecting R waves of the heart;
- defining an inhibit time period responsive to each detected R wave;
- and
- providing a cardioverting pulse of electrical energy to the atria of the heart responsive to an A wave being detected, and precluding the provision of the cardioverting pulse of electrical energy during each inhibit time period.
An atrial cardioverter for cardioverting atrial flutter comprising:
- a lead system having a plurality of electrodes to deliver a cardioverting pulse to atria of a heart, for sensing A waves of the heart, and for sensing R waves of the heart;
- an atrial flutter detector;
- a first detector for detecting the A waves sensed by the lead system;
- a second detector for detecting the R waves sensed by the lead system;
- inhibit means for defining an inhibit time period responsive to each detected R wave;
- and
- output means for providing a single cardioverting pulse to the lead system when the heart is in atrial flutter and responsive to an A wave being detected, said inhibit means precluding provision of the cardioverting pulse during each inhibit time period.
A method of cardioverting atrial flutter including the steps of:
- detecting atrial flutter;
- detecting A waves of a heart;
- detecting R waves of the heart;
- defining an inhibit time period responsive to each detected R wave;
- and
- providing a single cardioverting pulse of electrical energy to the atria of the heart responsive to an A wave being detected, and precluding the provision of the cardioverting pulse of electrical energy during each inhibit time period.
Dependencies are inferred from the claim text.