The present invention relates to a nuclear spin tomography device comprising a basic field magnet, a whole body gradient coil system with an HF antenna (1) surrounded by a suspension tube (2) which surrounds and restricts an internal chamber, guide rails (7) being located in this internal chamber (5) on which a patient support (6) can be inserted into the internal chamber (5) via the front sides (3) of the one suspension tube end and an insert gradient coil (9) can be inserted into said internal chamber (5) via the front side (4) of the other suspension tube end, characterized in that, the supply lines (13)(14)(15) for the insert gradient coil (9) are routed into the interior of the internal chamber (5) and terminated there in a coupling element (17) in each instance, and the insert gradient coil (9) has the respective coupling element mating part (18).