A spinal implant for insertion in the intervertebral space is formed as a hollow cage, wedge shaped in profile, with a lesser height leading end for a low profile entry. The cage has two open sides with a plurality of angled teeth along opposite longitudinal edges for engaging the end plates of adjacent...http://www.google.es/patents/US8083799?utm_source=gb-gplus-sharePatente US8083799 - Spinal implant
