Abstract: Catheter to be used in the skull area consisting of an elongated elastic tube having a closed distal end and having a connecting part arranged at the rear end. The tube comprises an opening at a predetermined distance from said distal end, the dimensions of said opening being sufficient for inserting an elongated manipulating needle into the tube such that the distal point of said needle contacts the closed distal top of the catheter. Furthermore the tube may comprise a closure element which is clamped around the tube and can be shifted along the tube between a first position in which said opening is covered by said closure element and at least one further position in which the opening is not obstructed.