| 摘要 |
<p>An adjustable spinal fixation system comprises collection of anchoring assemblies (12) attached, via variety of connectors (14,126), to spine-stabilizing rod (16). The anchoring assemblies (12) include a linkin member (120) attached in a ball-and-socket fashion to bone-engaging member (20) that is adapted to engage spinal bone of a patient. The linking member (120) join one of the included connectors (14) to an associated bone engaging member (20). The connectors (14) are selectivel attached to one of the stabilizing rods (16). The anchorin assemblies (12) each include a support collar (28) and retention collet (24) that cooperate to allow adjustment o the bone-engaging member (20) and corresponding connecto (14) during surgery. When surgery is complete, a securin nut (16) and locking bolt (124) cooperate with the suppor collar (28) and retention collet (24) to maintain th relative position of the entire fixation system, preventin unwanted movement between the system components. In on embodiment, the connectors (14) are multi-piece unit (Figure 5) that may be added or removed without disturbin adjacent connectors. <IMAGE></p> |
