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Self-sizing catheter features to prevent over-tightening of the electrode

  • US 10,149,716 B2
  • Filed: 10/28/2015
  • Issued: 12/11/2018
  • Est. Priority Date: 02/02/2015
  • Status: Active Grant
First Claim
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1. An ablation device for treatment of tissue in body lumens with varying sizes comprising:

  • a catheter;

    a balloon member coupled with a distal portion of the catheter, wherein the balloon member is configured to be inflated up to a maximum inflation pressure;

    an electrode structure support configured to at least partially unfurl or furl around the balloon member as the balloon member expands or contracts, wherein the electrode structure support forms an overlapping portion at least when the balloon member is completely deflated; and

    a spacer coupled with the catheter and configured to limit a size of the overlapping portion such that an inflation pressure sufficient to overcome a frictional resistance caused by the overlapping portion of the electrode structure support remains below the maximum inflation pressure while the balloon member is inflated.

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