A spinal fixation system is provided that includes a coupling member and a locking device that is operable to fix an elongate member in the coupling member. There is also provided insertion instruments configured to install and remove various components of the spinal fixation system. In one form, the...http://www.google.de/patents/US20080045955?utm_source=gb-gplus-sharePatent US20080045955 - Spinal Rod Anchor Device and Method
