System and method for timing synchronized pacing
AssigneeCardiac Pacemakers, Inc.
InventorsAndrew P. Kramer, Jeffrey E. Stahmann
Life of this patent
Estimating the term…
Abstract
A device and method for cardiac rhythm management in which a heart chamber is paced in accordance with sense signals from the opposite chamber or other distant cardiac site. In an exemplary embodiment, a rate chamber and a synchronized chamber are defined. The synchronized chamber is then paced in accordance with a synchronized pacing mode such that a synchronized chamber pace is delivered at a specified pacing instant defined with respect to expiration of a rate chamber escape interval based upon rate chamber events. The method is particularly useful in delivering cardiac resynchronization therapy.
Claims18
A method for operating a cardiac rhythm management device, comprising:
- sensing a heart chamber designated as a rate chamber and generating a rate chamber sense upon detection of depolarization occurring in the rate chamber;
- sensing a heart chamber contralateral to the rate chamber designated as a synchronized chamber and generating a synchronized chamber sense upon detection of depolarization occurring in the synchronized chamber;
- pacing the synchronized chamber upon expiration of an escape interval;
- restarting the escape interval after a synchronized chamber pace;
- restarting the escape interval after a rate chamber sense;
- and,
- wherein the escape interval is not restarted after a synchronized chamber sense.
A method for operating a cardiac rhythm management device, comprising:
- sensing rate and synchronized heart chambers through separate channels and generating sense signals upon detection of depolarization occurring in a chamber;
- and,
- pacing the synchronized chamber in accordance with a synchronized pacing mode wherein a synchronized chamber pace is delivered at a specified pacing instant defined with respect to expiration of a rate chamber escape interval based upon rate chamber events, wherein the rate chamber escape interval is reset upon a rate chamber sense and upon delivery of a pace to either chamber.
A cardiac rhythm management device, comprising:
- means for sensing a heart chamber designated as a rate chamber and generating a rate chamber sense upon detection of depolarization occurring in the rate chamber;
- means for sensing a heart chamber contralateral to the rate chamber designated as a synchronized chamber and generating a synchronized chamber sense upon detection of depolarization occurring in the synchronized chamber;
- means for pacing the synchronized chamber upon expiration of an escape interval;
- and,
- means for restarting the escape interval after a synchronized chamber pace and after a rate chamber sense but not after a synchronized chamber sense.
A cardiac rhythm management device, comprising:
- means for sensing rate and synchronized heart chambers through separate channels and generating sense signals upon detection of depolarization occurring in a chamber;
- and,
- means for pacing the synchronized chamber in accordance with a synchronized pacing mode wherein a synchronized chamber pace is delivered at a specified pacing instant defined with respect to expiration of a rate chamber escape interval based upon rate chamber events, wherein the rate chamber escape interval is reset upon a rate chamber sense and upon delivery of a pace to either chamber.
Dependencies are inferred from the claim text.