The invention relates to a device (1) with a stent structure (2), which is provided for introduction into the blood vessels of the human or animal body, wherein the stent structure (2) has an expanded state, in which it bears against the interior wall of the blood vessel, and a contracted state in which it is movable within a micro-catheter through the blood vessel, wherein the stent structure (2) is connected, preferably at its proximal end, to an insertion aid (3) and wherein the device (1) can be used for the treatment of a vasospasm. The invention also relates to a corresponding method for vasospasm treatment.
