| 摘要 |
PCT No. PCT/FR96/00342 Sec. 371 Date Sep. 5, 1997 Sec. 102(e) Date Sep. 5, 1997 PCT Filed Mar. 5, 1996 PCT Pub. No. WO96/27340 PCT Pub. Date Sep. 12, 1996The invention relates to a spinal instrument for essentially smooth adjustable connecting rods. The spinal instrument has a nut (5) that clamps receiving and locking assembly (8) to a multi-threaded bone anchor member (1). The receiving and locking assembly (8) has a compressible ring (24) disposed within a clamp (9) having a lower branch (10) and an upper branch (11) coupled between a connecting area (12). The connecting rod fits into the compressible ring (24). With the cavity-ring assembly forming a ball joint, the connecting rod may be clamped into the required angular position. Other features are disclosed. |
