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Method and device for three-stage atrial cardioversion therapy

  • US 9,814,895 B2
  • Filed: 02/26/2016
  • Issued: 11/14/2017
  • Est. Priority Date: 12/11/2007
  • Status: Active Grant
First Claim
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1. An implantable therapy generator, comprising:

  • detection circuitry configured to evaluate one or more sensed cardiac signals representative of atrial activity and detect an atrial arrhythmia;

    control circuitry operably connected to the detection circuitry that, in response to the atrial arrhythmia, controls generation and selective delivery of a therapy without confirmation of conversion of the atrial arrhythmia during the therapy, the therapy including;

    a first stage set of electrical pulses delivered via a first implantable electrode within a ventricular refractory period to destabilize a reentry associated with the atrial arrhythmia; and

    a second stage set of electrical pulses delivered via at least two of the first implantable electrode and a second implantable electrode, the second stage set of electrical pulses to terminate the reentry;

    wherein the first stage and the second stage are separated by a delay having a duration between 50 to 400 milliseconds,wherein the first implantable electrode comprises a far field electrode, and wherein the second implantable electrode comprises a near field electrode,wherein the far field electrode is a portion of an exterior surface of a housing of the implantable therapy generator.

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