Patent ID: 8781588

Claim:
An implantable medical device comprising: a hermetically sealed housing; at least one control unit situated within said hermetically sealed housing; at least one conducting element coupled with said implantable medical device wherein said at least one conducting element comprises any combination of one or more of at least one electrode, at least one antenna, at least one coil; at least one detection unit configured to detect magnetic resonance tomography interference fields which is connected to the at least one control unit and to said at least one conducting element; an evaluation unit coupled with the at least one detection unit; wherein the at least one detection unit contains at least one electro-optical converter configured to convert induced voltages for said magnetic resonance tomography interference fields from said at least one conducting element to optical signals, which are optically transmitted in a potential-free manner within the detection unit to the evaluation unit; and, wherein when one or more of a threshold for the optical signals and a predetermined periodic occurrence of the optical signals is exceeded, the evaluation unit is configured to trigger the implantable medical device to switch to a magnetic resonance imaging-safe state.