The invention relates to an intervertebral implant including a wedge which is inserted between two spinous processes and has two opposite grooves in which said spinous processes engage, which grooves have substantially parallel axes, and each of which grooves is defined by two flanges. The wedge has...http://www.google.ca/patents/US6946000?utm_source=gb-gplus-sharePatent US6946000 - Intervertebral implant with deformable wedge
