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US 2003/0149454 A1Published application
Method and apparatus for maintaining synchronized pacing
AssigneeCardiac Pacemakers, Inc.
InventorsJeffrey E. Stahmann, Andrew P. Kramer
Life of this patent
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Abstract
A device and method for cardiac rhythm management in which a cardiac site is paced in accordance with a pacing mode that employs sense signals from a different cardiac site. A protective period triggered by the sensing of intrinsic activity at the paced site is used to delay pacing by a protective delay interval without otherwise disturbing the pacing algorithm.
Claims20
A method for operating a cardiac rhythm management device, comprising:
- sensing cardiac chambers designated as a rate chamber and a synchronized chamber through separate channels and generating sense signals upon detection of depolarization occurring in a chamber;
- pacing the synchronized chamber upon expiration of an escape interval which is reset by a rate chamber sense and by a synchronized chamber pace, and wherein pacing of the synchronized chamber is inhibited during a synchronized chamber protective period that is initiated by a synchronized chamber sense;
- and,
- delaying a pace to the synchronized chamber by a protective delay interval when the pace would otherwise occur within the synchronized chamber protective period.
1 more element
A cardiac rhythm management device, comprising:
- sensing channels for sensing cardiac chambers designated as a rate chamber and a synchronized chamber and generating sense signals upon detection of depolarization occurring in a chamber;
- a synchronized chamber pacing channel for delivering paces to the synchronized chamber;
- a controller for controlling the delivery of paces in accordance with a programmed pacing mode;
- and,
- wherein the controller is programmed to pace the synchronized chamber upon expiration of an escape interval which is reset by a rate chamber sense or a synchronized chamber pace, to inhibit pacing of the synchronized chamber during a synchronized chamber protective period that is initiated by a synchronized chamber sense, and to delay a pace to the synchronized chamber by a protective delay interval when the pace would otherwise occur within the synchronized chamber protection period.
2 more elements
A cardiac rhythm management device, comprising:
- means for sensing cardiac chambers designated as a rate chamber and a synchronized chamber through separate channels and generating sense signals upon detection of depolarization occurring in a chamber;
- means for pacing the synchronized chamber upon expiration of an escape interval which is reset by a rate chamber sense and by a synchronized chamber pace, and wherein pacing of the synchronized chamber is inhibited during a synchronized chamber protective period that is initiated by a synchronized chamber sense;
- and,
- means for delaying a pace to the synchronized chamber by a protective delay interval when the pace would otherwise occur within the synchronized chamber protective period.
1 more element
Dependencies are inferred from the claim text.