| 摘要 |
PROBLEM TO BE SOLVED: To provide a spacer for insertion between two vertebrae, which can be adjusted in length, can be filled in situ not only with bone cement but also with bone grafts, and is improved in handling.SOLUTION: A spacer for insertion between two vertebrae includes a first member 2 having a hollow interior and a tubular wall, and a second member 3 having a hollow interior and a tubular wall. The second member is slidable within the first member in an axial direction for adjusting an overall length. At least the first or second member includes first ring projections 17, 24 at a free end thereof, at least a second ring projection 21 is provided inside the first ring projection in order to be fixed to a vertebral body, and at least the second ring projection 21 is formed by a third tubular member 22 fixed and connected to the periphery of the second tubular member 3 and/or is formed by a fourth tubular member 27 attached inside the first tubular member 2. |
