A spinal fixation device including two plates and a coupling element for coupling the plates in a fixed manner about adjacent spinous processes of the spine. Each plate is preferably equipped with integral spikes on the inwardly facing surfaces for pressing into the spinal processes and thereby augmenting...http://www.google.ca/patents/US20080183218?utm_source=gb-gplus-sharePatent US20080183218 - System and Methods for Spinous Process Fusion
