Patent ID: 8825133
Filing Date: 2014-09-02
Classification: A61B,A61M,G01R

Abstract:
1. An MRI-compatible catheter, comprising: an elongated flexible shaft having a distal end portion, and an opposite proximal end portion; an electrical connector interface held by the flexible shaft and configured to be in electrical communication with an MRI scanner; an ablation tip at the flexible shaft distal end portion, wherein an RF conductor extends longitudinally within the flexible shaft to the electrical connector interface and connects the ablation tip to an RF generator, wherein the RF conductor includes a series of back and forth segments along its length; at least one RF tracking coil positioned adjacent the distal end portion of the flexible shaft, wherein the at least one tracking coil includes a conductive lead extending between the at least one RF tracking coil and the electrical connector interface and configured to electrically connect the at least one tracking coil to the MRI scanner; at least one self-resonant cable trap in communication with the at least one RF tracking coil; at least one sensing electrode at the shaft distal end portion; and at least one high impedance resistor in communication with the at least one sensing electrode.