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Catheter with needles for ablating tissue layers in vessel

  • US 9,433,464 B2
  • Filed: 03/14/2013
  • Issued: 09/06/2016
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A catheter comprising:

  • a catheter body;

    a distal tip section having;

    a tubing with a lumen, the tubing having at least one opening;

    at least one needle in the lumen configured to assume a deployed position and a retracted position;

    an elongated support member extending through at least the lumen of the distal tip section;

    an actuator extending through at least the lumen of the distal tip section and configured for longitudinal movement on and relative to the elongated support member,a control handle having a member adapted to control longitudinal movement of the actuator relative to the elongated support member; and

    a wire adapted for longitudinal movement relative to at least the catheter body for moving the actuator relative to the elongated support member;

    wherein the at least one needle is supported by the elongated support member while in the retracted position and the at least one needle is pushed outwardly in a radial direction by the actuator while in the deployed position.

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