Screw-rod-connector of an anterior spiral fixation device

摘要

A transverse fixator assembly for spanning between a number of longitudinal members (11) situated adjacent a patient's vertebrae and methods for fixation of the spine which allow variation of the distance between two or more vertebrae. The assembly includes a number of connectors (15) configured to span the distance between and engage the longitudinal members. The connectors define a thru-hole (16) for engaging a bone bolt (30) which is engaged to a vertebra plus a number of spikes (17) projecting from the connector. A locking mechanism is configured to prevent the bolt from rotating relative to the connector when the nut is being tightened. One or more of the connectors may be a dynamic connector which is slidably engaged to the longitudinal members to vary the distance between the vertebrae for compression or distraction.