| 摘要 |
An expansive osteosynthesis implant comprises branches (5) connected by one of their ends to a tube cap (7) pierced by an orifice (8), which can be slid from the rear between the vertebral disks of two consecutive vertebrae, so as to maintain them at a set distance and restore the stability of the spinal column. Said branches (5) and said tube cap (7) define a hollow sheath which, in inoperative position, has a general cylindrical external shape with circular cross section and at least part of the internal volume (9) of the sheath (1) towards the distal ends of the branches (5), is in the shape of a revolving truncated cone with its larger base on the side of said tube cap (7). This implant comprises at least three branches (5) and at least one wedge (2) capable of passing into said orifice (8) and through the larger base of the truncated cone into said internal volume (9).
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