Surgical instrument to apply torsion forces to bone implant screws has an adapter as a cylinder with a temporary holding screw through its base to turn the implant screw for tightening and loosening as required

摘要

The surgical instrument to exert torsion forces on the screws of bone implants has an adapter (40), which is keyed to the implant components (18,20) to transmit the twisting forces. It is held in place by a temporary rotating screw (41), through a threaded drilling (46) in the base (45) at one end (42) of the cylindrical adapter (40). The adapter (40) is integrated into the surgical instrument (55), or is coupled to it.