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Ablation catheters and associated systems and methods

  • US 9,554,848 B2
  • Filed: 11/26/2013
  • Issued: 01/31/2017
  • Est. Priority Date: 04/05/1999
  • Status: Expired due to Fees
First Claim
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1. A catheter assembly, comprising:

  • an elongated body having a proximal region and a distal region extending along a longitudinal axis, wherein the distal region of the body is configured for intravascular delivery to a body lumen of a human patient;

    a pre-shaped spiral structure associated with the distal region of the elongated body, wherein the spiral structure is transformable between a low-profile configuration and an expanded configuration; and

    a plurality of electrodes spaced apart along the spiral structure, wherein each of the electrodes comprises a wire wound about a corresponding length of the spiral structure,wherein, when the spiral structure is in the expanded configuration, the spiral structure comprises a plurality of loops longitudinally spaced apart from each other and extending lengthwise along a central loop axis parallel with the longitudinal axis of the elongated body, andwherein the electrodes are disposed along the loops and configured to apply energy in a lesion pattern along a length of the body lumen of the human patient.

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