Patent ID: 7682379

Claim:
A device for osteosynthesis, comprising a fixation element having a through hole designed to receive a multiaxially pivotal bushing for a bone screw, the through hole having a central axis and an at least partially polygonal cross-section extending orthogonally to the central axis; and a bushing insertable in said through hole, the bushing including a central bore designed to receive a bone screw, the bore having a longitudinal axis, and a peripheral outer surface configured and dimensioned to be in contact with at least a portion of the interior surface of the through hole; wherein the bushing is configured and dimensioned to be radially compressible and radially expansible, and a cross section of the bushing extending orthogonally to the longitudinal axis of the bushing is shaped substantially the same as the cross section of the through hole such that when the bushing is inserted in the through hole, it is secured against rotation relative to its longitudinal axis while remaining pivotally adjustable relative to the fixation element to vary an angle of the longitudinal axis of the bore with respect to the central axis of the through hole.