Stryker Corporation
SURGICAL WIRE DRIVER CAPABLE OF AUTOMATICALLY ADJUSTING FOR THE DIAMETER OF THE WIRE OR PIN BEING DRIVEN

Abstract:

A wire driver for driving a wire or pin into living tissue includes a rotating drive shaft, a collet, and a wedge. The collet is held fast to the drive shaft and has a plurality of feet radially moveable relative for grasping the wire or pin. Each foot has an outwardly located curved ankle surface with a concave or convex profile. The wedge is disposed over the collet and is at least partly inside the bore of the drive shaft. The wedge rotates with the drive shaft and has a tapered inner surface in selective engagement with the curved ankle surfaces. The wedge is moveable longitudinally relative to the collet feet to bear against the feet and cause the feet to grasp the wire or pin. The wedge has a release position in which the wedge is spaced from the collet feet, releasing the wire or pin.