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Ablation catheter

  • US 9,642,675 B2
  • Filed: 05/30/2013
  • Issued: 05/09/2017
  • Est. Priority Date: 10/14/2004
  • Status: Active Grant
First Claim
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1. A method of ablating target tissue of a patient comprising:

  • placing an array of electrodes of a medical device defining a major longitudinal axis on or near the targeted tissue, the array of electrodes including a flexible carrier assembly on which the array of electrodes is disposed, the flexible carrier assembly including a plurality of resilient arms, each arm having a proximal arm segment and a distal arm segment joined to each other at a bend point, and when the flexible carrier assembly is in a fully deployed configuration, the array of electrodes defines a substantially planar surface substantially orthogonal to the major longitudinal axis, the medical device having an elongate body, a control shaft within the elongate body, and a coupler coupling the control shaft to the flexible carrier assembly, the coupler including at least one projection to prevent rotation of the flexible carrier assembly;

    placing a conductive pad in contact with a part of the patient'"'"'s body other than the targeted tissue;

    conducting electrical energy from a first electrode of the array through the target tissue to at least a second electrode of the array in a bipolar manner without conducting electrical energy to the conductive pad; and

    conducting electrical energy from at least one of the electrodes of the array through the target tissue to the conductive pad in a monopolar manner without conducting electrical energy from the first electrode to the second electrode.

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