INSTALLATION SYSTEMS FOR SPINAL FIXATION SYSTEM AND RELATED METHODS

摘要

A system (10) for implantation of a spinal fixation system (12) includes a vertebral anchor (14) having a top portion (24). The top portion (24) has a perimeter (50) and a first engaging element (44). The first engaging element (44) has a first longitudinal axis (30) that is generally parallel to a second longitudinal axis (16a) of the top portion (24). The perimeter (50) extends around the second longitudinal axis (16a). The system (10) also includes a driving tool that has a second engaging element (60) that is configured to cooperate with the first engaging element (44) to substantially restrict rotation of the driving tool relative to the top portion (24) about the second longitudinal axis (16a). The first engaging element (44) s configured to slidably receive the second engaging element (60) in a direction along the first longitudinal axis (30), and the second engaging element (60) is configured to extend substantially within the perimeter (50) of the top portion (24).