A medical system for endovascular temperature control of blood and for recanalization of a blood vessel, the medical system having a catheter, a radially compressible treatment device, in particular a recanalization device, which, in the compressed state, is arranged to be longitudinally movable in the catheter and, by being released from the catheter, is radially expandable for the recanalization of the blood vessel, and a temperature control element for controlling the temperature of blood, wherein the treatment device, in particular the recanalization device, can be positioned distally with respect to the temperature control element in such a way that, during use, blood which is temperature-controlled by the temperature control element flows to the recanalization site in the blood vessel.
