| abstract |
An interbody osteogenic fusion device (10) is provided that includes opposite end pieces (11, 12) with an integral central element (13). The end pieces are sized to maintain the height of an intervertebral disc space. The central element has a much smaller diameter so that the osteogenic fusion device forms an annular pocket around the central element. An osteogenic material is disposed within the annular pocket (24) between the opposite end pieces. In one embodiment, the osteogenic material constitutes a collagen sheet (30) soaked in a solution containing a bone morphogenetic protein. The osteogenic fusion device is configured so that the osteogenic material is in direct contact with the adjacent vertebral bone. |