Patent ID: 8348888

Claim:
A bi-directional catheter comprising: an elongated catheter body having proximal and distal ends; a catheter tip section at the distal end of the catheter body and comprising first and second diametrically-opposed off-axis lumens; a control handle at the proximal end of the catheter body, the control handle having two housing members that can be joined to enclose a steering assembly; first and second puller wires configured to deflect the tip section in response to the steering assembly; wherein the steering assembly is operational on the puller wires to deflect the puller wires without the housing members being joined and has a lever structure rotatable about an axis substantially perpendicular to a longitudinal axis of the control handle, the steering assembly including at least two pulleys rotatably mounted on opposing portions of the lever structure, wherein the first puller wire extends into the first lumen in the tip section and the second puller wire extends into the second lumen in the tip section, and wherein the distal end of each puller wire is anchored to the tip section, wherein each puller wire is trained on a respective pulley and rotation of the lever structure results in proximal movement of one of said pulleys relative to the control handle thereby drawing proximally at least a segment of its respective puller wire for deflecting the tip section in the direction of the off-axis lumen in which that puller wire extends.