Patent ID: 8366665

Claim:
A stretch resistant therapeutic device for release and deployment within a patient's vasculature, comprising: a vasoocclusive coil having a proximal end and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends, said vasoocclusive coil including a distal therapeutic portion and a proximal stem portion, and said proximal stem portion including at least one rounded member; a stretch resistant member extending through said lumen of said vasoocclusive coil, said stretch resistant member having first and second ends, said stretch resistant member being fixedly attached at the first end to the distal end of said vasoocclusive coil and configured to be detachably mounted at the second end to an elongated pusher member to allow for placement of the vasoocclusive coil within the patient's vasculature; and the elongated pusher member including a syringe for releasing said stretch resistant therapeutic device for deployment by fluid injection, said syringe having a distal end including a body of constraining material detachably retaining and forming a tight fluid seal about said at least one rounded member, and wherein said syringe is operative to dislodge said at least one rounded member from said body of constraining material to deploy said vasoocclusive coil.