Intervertebral cage and spinal fusion device comprising the

The present invention relates to an intervertebral cage for containing a bone graft for fusion of two adjacent vertebrae, comprising a base member (1) consisting of a rear wall (2) and two side walls (3, 4) being him connected, and an initially separate closure element of the base member (1), characterized in that said base member (1) comprises, at the front end of its side walls (3, 4) stops (6,7) of a height greater than those of said anterior ends, intended to come in contact with the anterior walls of the vertebrae to fuse during insertion of the base member (1) between the vertebres.L ' invention also relates to a spinal fusion device for carrying out the fusion of more than two adjacent vertebrae, characterized in that it comprises several intervertebral cages of the above type, and in that they are all closed by u n same shutter element constituted by a plate extending over all the vertebrae to be fused.