The present invention provides an impactor that separates vertebra so that a cervical plate and attached bone graft(s) can be inserted into an intervertebral space. After insertion, the vertebrae hold the bone graft and cervical plate in place facilitating the anchoring of the cervical plate to the vertebrae...http://www.google.fr/patents/US20030236528?utm_source=gb-gplus-shareBrevet US20030236528 - Impactor for use with cervical plate
