| 摘要 |
<p>The cage consists of two parallel branches (31,32) for introduction between the vertebrae, connected at one end by a bridge (33) and having a mechanism (36,37) for moving the branches outwards in relation to one another once the cage has been inserted by acting on thrust surfaces (310,320) located in a V-configuration with its tip towards the bridge. The cage has a slot (34) between the two branches which ends adjacent to the bridge and is preferably enlarged at the end, and the mechanism for expanding the branches comprises a threaded rod (362) which passes through the bridge and between the two branches, and a cylindrical nut (37) which moves along the rod and interacts with the inner surfaces of the branches when the rod is rotated.</p> |
