A device for treating a vascular malformation, including a wire having a coilable section configured to be coiled into a coil positionable within the vascular malformation wherein said coil comprises a sequence of concentric loops and wherein the coil is configured to line/bridge a neck of the vascular malformation so as to at least partially cover an orifice thereof, when in use and optionally a docking section configured to anchor and/or stabilize and/or assist in the positioning of the device within the vascular malformation, when in use.