Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal...http://www.google.de/patents/US7717939?utm_source=gb-gplus-sharePatent US7717939 - Rod attachment for head to head cross connector
