Patent ID: 8644920
Filing Date: 2014-02-04
Classification: A61N

Abstract:
1. An implantable medical device (IMD), comprising: a hermetically sealed housing, at least one control unit, at least one power supply, at least one RF antenna, and at least one RF communication unit, wherein the RF communication unit in conjunction with the at least one RF antenna are configured to allow communication between an external programming device and the implantable medical device; at least one frequency diplexer; a magnetic resonance tomography (MRT) interference detection unit having a demodulation unit, wherein the MRT interference detection unit is connected to wherein said demodulation unit is configured to detect RF rotary fields typical of MRT and transmit an MRT detection signal from the MRT detection unit to the at least one control unit; and, wherein the MRT interference detection unit is additionally connected or connectable via one of said at least one frequency diplexer to an electrode line that is present, and wherein the demodulation unit is configured to detect the MRT only when RF rotary fields are simultaneously detected via the at least one RF antenna and via the electrode line.