Patent ID: 6905476

Claim:
An injection catheter comprising: a catheter body comprising a flexible tubing having proximal and distal ends and at least one lumen therethrough; a tip section comprising a flexible tubing having proximal and distal ends, wherein the proximal end of the tip section is mounted at the distal end of the catheter body; one or more electrodes mounted on the tip section; one or more electrode lead wires that correspond in number to the number of electrodes, each electrode lead wire having a distal end that is electrically connected to a corresponding electrode on the tip section; a needle control handle at the proximal end of the catheter body; an injection needle extending through the tip section, catheter body, and needle control handle and having a proximal end attached to the needle control handle and a distal end within the tip section, wherein the injection needle is longitudinally slidable within the tip section so that its distal end can extend beyond the distal end of the tip section upon suitable manipulation of the needle control handle, and further wherein the injection needle consists of plastic tubing having at least a distal region with straight position memory; and a protective tubing extending through the tip section and catheter body through which the needle extends coaxially.