primary coil diameter d 1 of approximately 0 020 inches although smaller diameters and diameters as large as 0 035 inches may instead be used the pitch of the coil may be uniform as shown or it may vary along the length of the coil or different sections of the coil may be formed to have different pitches the wire material selected for the coil is preferably one capable of fluoroscopic visualization such as platinum iridium platinum tungsten or other suitable material in one embodiment the wire forming the coil has a diameter of approximately 0 0015 0 0020 inches coil 16 is then formed into a secondary three dimensional shape the secondary shape can be helical spherical multi lobal or any other shape desired to fill the aneurysm void the process for forming this shape is to temperature set the stretch resistant wire 30 into the desired shape the stretch resistant member could be a shape memory polymer or metal such as nitinol stretch resistant member 30 can be in a diameter range of 0 0005 u2033 to 0 003 u2033 one or more reduced diameter windings 24 are positioned at the proximal end of the coil 16 forming a stop 26 an atraumatic distal tip 28 which may be formed of gold or tin solder or other material is mounted to the distal end of the coil 16 a stretch resistant wire 30 or other type of elongate filament or strand is attached to the distal tip 28 and extends through the coil 16 stretch resistant wire 30 includes an element 32 on its proximal end that is sufficiently broad that it will not pass through the lumen of the windings of stop 26 but will instead rest against.