An improved catheter and method of using the same is described. The catheter has at least one anchoring element at its distal tip region which is used to secure the catheter to a pre-implanted medical device, such as a stent, during the filling of an aneurysm. Such action prevents a buildup of pressure or of material from forcing the distal tip of the catheter to be forced from the aneurysm before the procedure is complete.
