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Systems and methods for treating tissue with radiofrequency energy

  • US 10,292,756 B2
  • Filed: 05/26/2017
  • Issued: 05/21/2019
  • Est. Priority Date: 09/22/2009
  • Status: Active Grant
First Claim
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1. A method of treating gastrointestinal reflux disease comprising:

  • providing a treatment device having a plurality of electrodes, each of the plurality electrodes having an engagement feature to maintain distal tips of the plurality of electrodes in axial alignment when advanced from the treatment device, the treatment device further having a spacer with a central lumen to receive an electrode advancer to maintain centering of the electrode advancer within an outer tube of the treatment device during advancement;

    applying non-ablative radiofrequency energy to the plurality of electrodes to thermally treat tissue below a tissue ablation threshold without causing tissue necrosis and create a plurality of tissue lesions along axially spaced tissue levels within the upper gastrointestinal tract;

    monitoring tissue temperature throughout the procedure;

    regulating power ensuring in response to the monitoring step that the tissue temperature does not exceed a predetermined value which would cause overheating of tissue which would cause tissue ablation and/or tissue necrosis; and

    rotating the device and subsequently applying non-ablative radiofrequency energy, the plurality of electrodes remaining in axial alignment to prevent overheating of tissue which would cause tissue necrosis.

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