Patent ID: 8285365

Claim:
An interventional device for RF ablation for use in a RF electrical and/or magnetic field, comprising: an ablation catheter or probe with an ablation electrode for delivering RF ablation power, and an MR/RF micro-coil for receiving MR signals and/or for transmitting RF signals, and a transmission path connected with the ablation catheter or probe, wherein the transmission path comprises at least two line segments which are electrically coupled by at least one coupling element comprising a high pass filter characteristic so that: common mode currents induced in the transmission path by the RF electrical and/or magnetic field of a first frequency to which the transmission path is exposed, are at least substantially blocked, the RF ablation power having a predetermined second RF frequency, which is higher than the first frequency, is at least substantially, or to an extent which is necessary for a desired ablating of tissue, transmitted in the form of common mode currents over the transmission path, and MR signals and/or RF signals which are received and/or transmitted by the MR/RF micro-coil are conveyed over the transmission path in the form of differential mode currents.