A device and method for use in a vertebral spine to prepare a space between adjacent vertebral bodies to receive an implant. The device includes a shaft, and a mounting member at one end of the shaft. A working end is mounted on the mounting member and is coupled to a drive mechanism adjacent to the...http://www.google.es/patents/US6692501?utm_source=gb-gplus-sharePatente US6692501 - Spinal interspace shaper
