Thoracic introducer

A stent graft delivery device comprising a handle at a distal end, a nose cone dilator at a proximal end, the nose cone dilator including a distal end, a guide wire catheter extending from the handle to and through the nose cone dilator at the proximal end, the guide wire catheter being constructed from a resilient and flexible material, a pusher catheter extending from the handle towards the proximal end, a stent graft retained on the delivery device between the distal end of the nose cone dilator and the pusher catheter, the stent graft having a graft lumen therethrough and the guide wire catheter extending through the graft lumen, a pusher lumen through the pusher catheter, the guide wire catheter extending through the pusher lumen and able to move longitudinally and rotationally with respect to the pusher, a pull wire fastened to the distal end of the nose cone dilator and the pull wire extending distally and adjacent to and outside the guide wire catheter and through the stent graft lumen and the pusher lumen to the handle and a wire pull mechanism for the pull wire associated with the handle, whereby the pull wire can be pulled by the wire pull mechanism to induce a curve in the guide wire catheter distally of the nose cone dilator such that the proximal end of the delivery device more closely fits the shape of a portion of the vasculature of a patient into which the device is deployed, wherein when the guide wire catheter is curved during deployment, the curve of the guide wire catheter is greater than a curve of the pull wire.