| 摘要 |
<p>A spinal fixation device (10) includes a threaded stud (24) having an open-ended axial slot (30) to straddle a rod (14) of a vertebral support (12), and a bracket (22) which is rotatable on the stud (24). A vertebra bone screw (50) passes through an opening (48) in a distal end of the bracket (22). The stud (24) and bracket (22) are locked in position relative to the rod (14) by a nut (34). An insert (32) within the slot (30) bears against the rod (14) and prevents the stud (24) from being deformed by the force of the nut (34) on the stud segments. The bracket (22) can be be rotated around the stud (24); and the stud (24) can be rotated around and slid along the rod (14), to afford great adjustability and ease of attachment.</p> |
