An embolic coil comprises a wound coil including a plurality of turns defining a lumen a stretch resistant member at least partially received within the lumen and having a proximal end, a distal end, a proximal enlarged portion, and a distal enlarged portion and proximal and distal restrictor members at least partially received within the lumen. The proximal restrictor member defines an aperture smaller than the proximal enlarged portion. The distal restrictor member defines an aperture smaller than the distal enlarged portion. A portion of the stretch resistant member is movable through the apertures to allow stretching of the wound coil. The proximal enlarged portion is adapted to engage the proximal restrictor member to resist stretching of the wound coil. The distal enlarged portion is adapted to engage the distal restrictor member to resist stretching of the wound coil.
