SYSTEM FOR OSTEOSYNTHESIS ALONG THE SPINAL COLUMN, CONNECTING ELEMENT FOR SUCH A SYSTEM AND TOOL FOR ASSEMBLING AND/OR DISMANTLING THE SAME

摘要

the invention relates to a system for use in spinal osteosynthesis, especially for stabilizing the spine segment, which comprises at least one connecting element (14) in the form of a rod.at least two restraint (12) each of which can be anchored to a segment of the spinal cord and includes a head in the shape of a tuning fork (15) with two arms (16, 17) are arranged so as to form a zone (18) approximately in u shape to be the connecting element (14).the system also includes a locking screw (19) for fixing the connecting element (14) in the receiving area (18) between the two arms (16, 17) of the head (15) in the form of a fork of the screw.the bottom (22) of the receiving area (18) is curved to correspond to a rotatable support element (23) positioned between the bottom (22) of the receiving area (18) and the connecting element (14). the supporting surface (24) of the support element (24) which is rotatable in the bottom (22) of the receiving area (18) is convex, the complementarity of the bottom (22) of the receiving area (18).the supporting surface (24) of the support (23), which is rotatable in the bottom (22) of the receiving area (18) is in the form of shell is hemispherical. the opposite side (25) facing the locking screw (19) when the system is installed, and also includes a groove (26) for accommodating the connecting element (14) in the form of a rod.