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Ablation of tissue within vertebral body involving internal cooling

  • US 10,478,246 B2
  • Filed: 10/05/2018
  • Issued: 11/19/2019
  • Est. Priority Date: 09/30/2002
  • Status: Expired due to Term
First Claim
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1. A method of accessing and ablating tissue within a vertebral body involving internal cooling, the method comprising:

  • inserting a stylet within a cannula;

    percutaneously inserting the stylet and the cannula through skin of a patient;

    advancing the stylet and the cannula within the vertebral body using a transpedicular approach through a first pedicle using real time image guidance;

    removing the stylet from the cannula;

    inserting a channeling tool through the cannula to create a working channel beyond a path formed by the stylet within the vertebral body using real time image guidance;

    removing the channeling tool from the cannula;

    identifying a treatment zone within the vertebral body to include an anterior-posterior distance;

    inserting a first radiofrequency probe through the cannula to the treatment zone within the vertebral body using real time image guidance,wherein the first radiofrequency probe comprises a bipolar probe having a first two electrodes, wherein a return electrode of the first two electrodes is spaced proximally from an active electrode of the first two electrodes,inserting a second radiofrequency probe within the vertebral body through a second pedicle and to the treatment zone using real time image guidance,wherein the second radiofrequency probe comprises a bipolar probe having a second two electrodes, wherein a return electrode of the second two electrodes is spaced proximally from an active electrode of the second two electrodes;

    wherein the first and second radiofrequency probes are coupled to a single generator,causing energy within a frequency range between 400 kHz and 600 kHz to be delivered to the treatment zone within the vertebral body using the first and second radiofrequency probes for a duration of time sufficient to ablate tissue at the treatment zone,wherein the tissue comprises at least one of a basivertebral nerve and a tumor,wherein the first radiofrequency probe comprises one or more diagnostic devices configured to provide diagnostic information in connection with treatment of the tissue; and

    causing cooling fluid to circulate through one or more lumens of at least one of the first and second radiofrequency probes to provide cooling to the treatment zone.

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