A trigger wire release mechanism is disclosed that includes a control memberfor selectively releasing a trigger wire (22, 44) from a prosthesis retainingdevice. The control member includes an elongate body member (36) and a guide member(24, 25, 93, 94) slidably disposed on the elongate body member. The trigger wire1 (22, 44) includes a distal end coupled to the prosthesis retaining device anda proximal end coupled to the guide member. The guide member (24, 25, 93, 94) canlbe moved from a distal end of the elongate body (36) to a proximal end of the elongatebody, thereby disengaging the trigger wire (22, 44) from the retaining device.The control member may include a locking mechanism (120) for limiting the axialposition of the guide member (24, 25, 93, 94) along the elongate body member (36).A prosthesis control member (81) is also disclosed. The prosthesis control member(81) is adapted to control the position of the prosthesis during deployment.
