#$%^&*AU2012202482A120121115.pdf#####ABSTRACT An endovascular delivery system includes an endovascular prosthetic device and a signal active guide wire engaging the endovascular prosthetic device. A rotary encoder is coupled with the guide wire and the endovascular prosthetic device to provide an encoder signal on the guide wire. The encoder signal is indicative of axial angular position of the endovascular prosthetic device during implantation of the endovascular prosthetic device in a body of a patient5/5 1118 1112 1120 1124 1114 1110 1118 1102 1122 400 406 1108 1106 402 1104 402 FIG. 11