Patent ID: 8509889

Claim:
An atrial arrhythmia treatment apparatus, comprising: an implantable therapy generator adapted to be implanted in a patient, including: means for detecting an atrial arrhythmia; means for generating a phased unpinning far field therapy having an energy level above a pacing threshold and below a pain threshold of the patient; and means for controlling delivery of the phased unpinning far field therapy in response to detection of the atrial arrhythmia; and at least two leads operably connected to the implantable therapy generator, each lead having at least two electrodes adapted to be positioned proximate an atrium of a heart of the patient through which the phased unpinning far field therapy is selectively delivered to the atrium of the heart; wherein the implantable therapy generator is configured to selectively excite the electrodes to create at least three different electric fields between the electrodes and the device associated with at least three unique electrode configurations to deliver a rotating set of phased unpinning far field electrical fields, each of the individual electrical fields of the rotating set of phased unpinning far-field electrical fields established by a pulse train comprising one or more pulses, and each of the individual electrical fields associated with a unique electrode configuration.