Spinal column fixation device

Abstract

Spinal column fixation device 1, in the form of a pedicle screw, has an anchoring section 4 meant for fixation into a bone, and an adjoining head section 5 for attachment to a longitudinal support piece 3. The head section 5 has an opening 7 that runs all the way through the part, transverse to the plane of symmetry 6 of the fixation device, for the purpose of admitting a tension-stable stable fastening device 2 which can be looped around longitudinal support piece 3.

What is claimed is:  
     
         1 . A spinal column fixation assembly comprising a longitudinal support piece having a longitudinal axis, a fixation device having an anchoring element with a major axis for fixation to a bone and a head section formed as a single piece with said anchoring element, said head section having a channel for receiving said support piece and a slot extending through said fixation device along an axis transverse to the axis of a support piece positioned in said channel and intersecting the major axis of the anchoring element, said assembly further comprising a tension stable fastening element extending through said slot and around said support piece to secure said support piece in said channel.  
     
     
         2 . The fixation assembly claimed in    claim 1   , wherein the anchoring element, the head section, and the longitudinal support piece are titanium and the fastening element is resorbable plastic.  
     
     
         3 . The fixation assembly of    claim 1   , wherein the assembly consists in its entirety of titanium or a titanium alloy.  
     
     
         4 . The fixation assembly of    claim 1   , wherein the assembly consists in its entirety of non resorbable plastic.  
     
     
         5 . The fixation assembly of    claim 1   , wherein said fastening element comprises a belt formed in a loop and a closure element in said belt and moveable along said belt in one direction only.