Patent ID: 7959601

Claim:
A steerable catheter comprising: an elongated, flexible tubular catheter body having proximal and distal ends and a lumen extending therethrough; a tip section at the distal end of the catheter body, the tip section comprising a flexible plastic tubing having a pair of diametrically-opposed lumens extending therethrough; a control handle at the proximal end of the catheter body; first and second puller wires, each extending through one of the pair of lumens in the tip section and through the lumen of the catheter body, each having a proximal end anchored to the control handle and a distal end anchored to the tip section, whereby the puller wires are longitudinally moveable relative to the catheter body to cause deflection of the tip section; and an elongated deflection mechanism extending in the tip section without contacting the first and second puller wires, the deflection mechanism comprising a plurality of deflection members and having a first centroidal axis and a second centroidal axis and configured as such to define a lesser area moment of inertia about the first centroidal axis and a greater area moment of inertia about the second centroidal axis for providing the tip section with in-plane deflection, wherein at least one of the plurality of deflection members has a distal end anchored in a location different than an anchor location of a distal end of another of the plurality of deflection members.