| 摘要 |
An articulation toggle bolt bone screw (10) for use in surgical implants having particular usefulness in the stabilization of the human spine by fixation of vertebra. The apparatus employs a self-tapping anchoring screw (14) having a ball joint socket (26) for receipt of a rotatable threaded bolt (20). The ball joint allows angular placement of the bolt which is secured into position by an attachment nut (56) coupling directly to the anchoring screw. An upper surface of the attaching nut is rounded allowing engagement of component devices. A rod clamp (46) is disclosed for use in combination with the device providing attachment to support rods and serving to bias the bolt into a permanent fixed position upon attachment. An alternative embodiment is disclosed of the rod clamp providing a single support rod attachment system. <IMAGE> |
