Patent ID: 7918851

Claim:
An irrigated tip catheter comprising: a catheter body with a proximal end and a distal end; a control handle at the proximal end of the catheter body; a tip section at the distal end of the catheter body and comprising a tip electrode having: a shell and a plug jointly defining a chamber, the chamber occupying substantially all of a cross-section of a distal end of the tip electrode, wherein the plug is at least partially fitted in the shell such that the chamber is between a distal end of the shell and a distal end of the plug, wherein the distal end of the plug creates a fluid tight seal with the shell; at least a first lumen extending through the plug to pass fluid into the chamber, and at least one second lumen off-axis to the first lumen extending through the plug and having a distal end terminating proximal the chamber for carrying electrical and/or electromagnetic components of the tip electrode; a plurality of radial fluid passages to pass fluid from the chamber to outside the tip electrode; wherein the chamber is isolated from the second lumen and a region of the tip electrode occupied by electrical and/or electromagnetic components in the tip electrode.