The present invention relates to a method and medical device for tempering an infusion fluid for hypothermia purposes comprising a frame for introducing the device into one or more slots of a rack of given dimension and/or shape, the frame comprising at least one, preferably at least two rail(s) and/or hook(s) for inserting the device into the rack and at least one releasable lock for releasably locking it therein. Furthermore, at least one connector is provided for connecting the device with a central unit for controlling and/or monitoring the device which is adapted to also control and/or monitor at least a further medical device. At least one incoming port is connected to at least one source of infusion fluid adapted to contain infusion fluid during use. At least one pump is also provided for pumping the infusion fluid from the incoming port to an outgoing port, and at least one tempering device adapted to cool and/or heat the incoming infusion fluid to a preset temperature and/or temperature profile for delivering it to the outgoing port.