#$%^&*AU2017203297A120170608.pdf#####ABSTRACT The present invention is directed to a mapping and ablation catheter with contact force sensing capabilities at a distal end. The catheter includes a catheter body, a deflectable section, and a tip distal section which has a tip electrode and an integrated contact force sensor for sensing a 3D contact force vector applied to the tip electrode. The contact force sensor has a body and at least one sensor with an electrical characteristic that is responsive to deformation of the body. The sensor is adapted to receive an electrical current and to output an electrical signal indicative of a change in the electrical characteristic. In one embodiment, the sensor is a strain gauge responsive to tension and compression of at least a portion of the body of the force sensor and the electrical characteristic of the strain gauge being monitored is electrical resistivity. In another embodiment, the sensor is responsive to strain and stress of at least a portion of the body, and the electrical characteristic being monitored is inductance or hysteresis loss.1/14 01 0 -Jo(0 0 20
