Patent ID: 8088152

Claim:
Orthopedic retaining system comprising: at least one bone screw having a head part and a threaded shaft pivotally mounted on the head part, a clamping element mounted in the head part, the clamping element adapted to be pressed against threaded shaft from an upper side of the head part and thereby securing the threaded shaft relative to the head part, a retaining bar arranged in a receptacle of the head part and extending essentially transversely to the threaded shaft, and a clamping device on the upper side of the head part for pressing the clamping element and the retaining bar into the head part in such a manner that the threaded shaft and the retaining bar are secured in position relative to the head part, the clamping device comprising an elastically deformable pressure element, the pressure element which, upon actuation of the clamping device in a direction of displacement towards the underside of the head part, is displaced into a clamping position, wherein: the pressure element is elastically deformable in the direction of displacement, and upon actuation of the clamping device and the resulting displacement of the pressure element into the clamping position, the pressure element abuts first on the clamping element and thereby secures the pivotable threaded shaft in position on the head part while the retaining bar remains freely displaceable, and only upon further actuation of the clamping device in the direction of displacement is the pressure element elastically deformed, thereby abutting on the retaining bar and securing the retaining bar in position.