Catheter with needles for ablating tissue layers in vessel

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.