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Multi-electrode catheter assemblies for renal neuromodulation and associated systems and methods

  • US 9,452,017 B2
  • Filed: 08/12/2015
  • Issued: 09/27/2016
  • Est. Priority Date: 05/11/2012
  • Status: Active Grant
First Claim
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1. A renal denervation catheter for treatment of a human patient, the renal denervation catheter comprising:

  • a shaft having a proximal end and a distal end, wherein the distal end of the shaft is configured for intravascular delivery over a guide wire to a renal blood vessel of the patient;

    a pre-shaped helical structure disposed at or proximate to the distal end of the shaft, wherein the helical structure is configured to transform between a low-profile delivery state and a deployed state tending to assume the shape of the pre-shaped helical structure, and wherein the helical structure is composed, at least in part, of nitinol; and

    a plurality of energy delivery elements carried by the helical structure,wherein the shaft and the helical structure together define a guide wire lumen therethrough, and wherein—

    the guide wire lumen is configured to slidably receive the guide wire to locate the helical structure at a target treatment site within the renal blood vessel of the patient and to restrain the helical structure in the low-profile delivery state, andthe helical structure is reversibly transformable from the delivery state to the deployed state by proximally moving the guide wire through the guide wire lumen until a distalmost end of the guide wire is disposed within the helical structure.

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