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Catheter-focused magnetic field induced renal nerve ablation

  • US 9,060,761 B2
  • Filed: 11/09/2011
  • Issued: 06/23/2015
  • Est. Priority Date: 11/18/2010
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • an internal apparatus intended to be deployed within a patient, the internal apparatus including;

    a flexible elongated member comprising a proximal end, a distal end, and a length sufficient to access a target vessel of the body relative to a percutaneous access location; and

    a magnetically permeable element provided at a distal end of the elongated member, the magnetically permeable element having poor electrical conductivity and configured for placement within the target vessel and adjacent a wall of the target vessel; and

    an external apparatus intended to be deployed outside of the patient, the external apparatus including;

    one or more external coils positionable on one or both of anterior and posterior portions of a patient in proximity to the target vessel; and

    a generator coupled to the external coils and configured to energize the external coils to create a high-frequency oscillating magnetic field in body tissue between the external coils including the target vessel and target tissue proximate the target vessel;

    wherein the magnetically permeable element serves to concentrate the magnetic field, created by the external apparatus, in a region near the target vessel, the concentrated magnetic field inducing high frequency electric current sufficient to ablate the target tissue proximate the vessel.

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