Torque transmitting ball joint driver having a rigid fixation mechanism

A driver, comprising:

• an input shaft adapted to transmit torque;
• a driver tip coupled to the input shaft, the driver tip including an interface defined at an end thereof adapted to engage a screw;
• and
• a bushing that engages the driver tip at a proximal end and receives the screw at a distal end, wherein the screw is received within the bushing and engages the interface, and
• wherein the input shaft is adapted to apply torque to the screw through the interface and to apply torque to the bushing by the engagement of the bushing with the driver tip,
• wherein the bushing includes inner threads disposed at the distal end that are adapted to pass over a threaded region of the driver tip, the bushing further includes inner threads disposed at the proximal end, and the threaded region of the driver tip engages the inner threads disposed at the proximal end, and
• wherein the bushing further includes a stop region that cooperates with an aiming device to hold the bushing within the aiming device as torque is transmitted to the screw and the bushing, the stop region is formed having a jagged or zig-zag shaped edge, and forward progress of the bushing is halted by an interaction of a pin of the aiming device with a vertex formed by the jagged or zig-zag shaped edge.