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

  • US 8,888,773 B2
  • Filed: 03/11/2013
  • Issued: 11/18/2014
  • Est. Priority Date: 05/11/2012
  • Status: Active Grant
First Claim
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1. A catheter apparatus, comprising:

  • an elongated tubular shaft having a proximal portion and a distal portion; and

    a therapeutic assembly disposed at the distal portion of the elongated shaft and adapted to be located at a target location within a renal artery of a human patient, the therapeutic assembly including a support structure comprising—

    a control member comprising a pre-formed helical shape, wherein the control member is a tubular structure having a lumen therethrough and is composed of a nitinol multifilar stranded wire; and

    a plurality of energy delivery elements carried by the support structure,wherein the elongated tubular shaft and the therapeutic assembly together define therethrough a guide wire lumen configured to slidably receive a medical guide wire, andwherein axial movement of the guide wire relative to the therapeutic assembly transforms the support structure between (a) a low-profile delivery configuration and (b) a deployed configuration tending to assume the pre-formed helical shape of the control member.

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