Universal bone screw screwdriver

摘要

The instant invention is directed to a universal bone screw screwdriver and in particular to a universal screwdriver that permits the removal of screws from bone plates that are manufactured by different manufacturers having distinct characteristics. The universal bone screw screwdriver is adapted to replaceably receive tool bits corresponding to the screw heads of different manufacturers and comprises a torque limiting spring to secure the tool bit to the driver shaft and inhibit over-tightening of the bone screw into the bone or bone plate as the case may be.

主权项

1. An orthopedic universal screwdriver comprising:
a handle; a driver shaft connectable to said handle that is adapted to receive an interchangeable tool bit for engaging bone screws; a recess disposed in said driver shaft; and a torque limiting spring removeably attachable to the driver shaft via said recess for securing the interchangeable tool bit to said driver shaft and configured to prevent rotation of the interchangeable tool bit when said torque limiting spring reaches a pre-set torque value, wherein the torque limiting spring further comprises at least two arms, wherein the first arm is a flat arm and the second arm is a semicircular arm.