Patent ID: 7416547

Claim:
A steerable cardiac drug injection catheter comprising: a catheter body having an outer wall, proximal and distal ends, and at least one lumen extending therethrough; a tip section comprising flexible tubing and having proximal and distal ends and at least one lumen extending therethrough, the proximal end of the tip section being fixedly attached to the distal end of the catheter body; a tip electrode mounted at the distal end of the tip section, the tip electrode having a distal face and a lumen extending therethrough; an injection needle which is straight and smooth over its entire length extending through the at least one lumen of the catheter body, then extending through the at least one lumen of the tip section and into the lumen of the tip electrode, the injection needle being in fluid tight engagement with the lumen of the tip electrode, wherein the injection needle is movable between a first position in which the needle is contained within the tip electrode, to a second position in which the needle extends out of the distal face of the tip electrode; a deflection control handle proximal the catheter body, the deflection control handle having a thumb control wherein the entire thumb control is longitudinally movable relative to the deflection control handle; a needle control handle proximal the deflection control handle and connected to the injection needle for moving the injection needle longitudinally relative to the catheter body.