A set screw for locking a first implant in position relative to a second implant. The set screw having a bore with at least one side slot extending parallel to the axis of the screw and intersecting with an underside of the screw to produce an edge at such intersection. Preferably the slots also intersect...http://www.google.fr/patents/US6454772?utm_source=gb-gplus-shareBrevet US6454772 - Set screw for medical implant with gripping side slots
Set screw for medical implant with gripping side slots