Patent ID: 8343165

Claim:
A driver apparatus comprising: a drive shaft assembly having proximal and distal ends, a longitudinal axis extending therebetween, and a throughbore extending axially along the longitudinal axis; at least one resilient locking arm of the drive shaft assembly configured to be shifted outwardly away from the longitudinal axis to a locked position; drive structure at the distal end of the drive shaft assembly that projects axially beyond the resilient locking arm for mating with corresponding drive structure of a screw anchor; an elongate actuating rod configured to fit into the throughbore and having a predetermined actuating position in the throughbore so that when advanced thereto the actuating rod is axially spaced from the drive structure of the drive shaft assembly and the screw anchor mated therewith; and a distal end of the actuating rod configured to urge the resilient locking arm to the locked position thereof for being lockingly engaged with a pivotable member coupled to the screw anchor as the actuating rod is advanced to the predetermined actuating position thereof.