A device and method for use in a human spine to prepare a space between adjacent vertebral bodies and into the vertebral end plates to receive an implantable insert. The device includes a handle, a shaft, and a mounting member at one end of the shaft. An abrading element is mounted on the mounting member...http://www.google.se/patents/US6517544?utm_source=gb-gplus-sharePatent US6517544 - Device and method for preparing a space between adjacent vertebrae to receive an insert