Patent ID: 7819857

Claim:
A deflectable catheter comprising: a catheter body having an outer wall, proximal and distal ends, and at least one lumen extending therethrough; a tip section comprising a flexible tubing having proximal and distal ends and at least two lumens extending therethrough, the proximal end of the tip section being fixedly attached to the distal end of the catheter body, wherein the flexible tubing comprises at least first and second pieces of tubing longitudinally arranged over a plastic housing, wherein the first piece of tubing comprises a different durometer material than a material of the second piece of tubing; a control handle mounted at the proximal end of the catheter body, the control handle comprising: a housing comprising a generally hollow interior, a piston receiving assembly at least partially within the interior of the housing, the piston receiving assembly being rotationally moveable relative to and about a longitudinal axis of the housing, and comprising a proximal barrel and a distal barrel, the distal barrel comprising a piston chamber at its distal end, and a piston longitudinally slidable within the piston chamber along a longitudinal axis of the control handle, wherein the distal barrel of the piston receiving assembly engages a proximal end of the piston to substantially prevent rotation of the piston relative to the piston receiving assembly; and means for deflecting the tip section by manipulation of the control handle.