| 摘要 |
<p>A device (10) for securing a spinal rod to the spine. The device includes an elongated spinal rod (16) configured to be implanted adjacent to the spinal column of a patient spanning across several vertebral bodies. The device (10) also includes at least one fixation element (12) for engaging vertebral bodies at a number of vertebral levels, each of the fixation elements (12) having a vertebral engaging portion (24) and a stem portion (22) extending from the vertebral engaging portion (24). A ball ring (18) having an opening (80) extending through the center of the ball ring (18). The ball ring (18) further includes a through slot (82) so as to be compressible and expandable about a central axis extending through the center of the ball ring (18). The opening (80) is adapted to receive the spinal rod (16). The device (10) further includes a set screw (20) and a rod connector (14).</p> |
