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US 8,897,874 B2Granted
Biventricular-triggered pacing in the context of multi-site left ventricular pacing
AssigneeCardiac Pacemakers, Inc.
InventorsJeffrey E. Stahmann, James O. Gilkerson, Krzysztof Z. Siejko, James Kalgren, Yinghong Yu, Kenneth L. Baker
Life of this patent
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Abstract
Biventricular-triggered pacing is a pacing mode that can employ in cardiac resynchronization pacing at elevated heart rates. Described herein are methods and devices for implementing biventricular pacing in the context of multi-site left ventricular pacing.
Claims18
A cardiac pacing device, comprising:
- pulse generation circuitry for generating pacing pulses;
- sensing circuitry for sensing cardiac electrical activity;
- a controller for detecting cardiac events that define pacing timing intervals and for controlling the delivery of pacing pulses in accordance with a programmed mode;
- a switch matrix operable by the controller for connecting the pulse generation circuitry and sensing circuitry to selected electrodes in order to form selected sensing and pacing channels;
- wherein the controller is programmed to:
- sense cardiac activity through a right ventricular sensing channel;
- operate in a normal pacing mode or a biventricular-triggered pacing mode;
- in a normal pacing mode, schedule delivery of paces through left ventricular pacing channels to at least two left ventricular sites during a cardiac cycle interval that is reset by a right ventricular sense;
- in a biventricular-triggered pacing mode, when triggered by a right ventricular sense, deliver a pace to the right ventricle through a right ventricular pacing channel and deliver multiple paces to the left ventricle at selected left ventricular sites, wherein at least the first left ventricular pace is delivered either before or coincident with the right ventricular pace and at least one subsequent left ventricular pace is delivered after a selected interval.
6 more elements
A method for operating a cardiac pacing device, comprising:
- sensing cardiac activity through a right ventricular sensing channel;
- operating in a normal pacing mode or a biventricular-triggered pacing mode;
- in a normal pacing mode, scheduling delivery of paces through left ventricular pacing channels to at least two left ventricular sites during a cardiac cycle interval that is reset by a right ventricular sense;
- in a biventricular-triggered pacing mode, when triggered by a right ventricular sense, delivering a pace to the right ventricle through a right ventricular pacing channel and delivering multiple paces to the left ventricle at selected left ventricular sites, wherein at least the first left ventricular pace is delivered either before or coincident with the right ventricular pace and at least one subsequent left ventricular pace is delivered after a selected interval.
1 more element
A cardiac pacing device, comprising:
- means for sensing cardiac activity through a right ventricular sensing channel;
- means for operating in a normal pacing mode or a biventricular-triggered pacing mode;
- in a normal pacing mode, means for scheduling delivery of paces through left ventricular pacing channels to at least two left ventricular sites during a cardiac cycle interval that is reset by a right ventricular sense;
- in a biventricular-triggered pacing mode, when triggered by a right ventricular sense, means or delivering a pace to the right ventricle through a right ventricular pacing channel and delivering multiple paces to the left ventricle at selected left ventricular sites, wherein at least the first left ventricular pace is delivered either before or coincident with the right ventricular pace and at least one subsequent left ventricular pace is delivered after a selected interval.
1 more element
Dependencies are inferred from the claim text.