VERTEBRAL COLUMN SUPPORT DEVICE WHICH IS ASSEMBLED BY MEANS OF CLAMPING

摘要

The invention relates to a vertebral column support device which is assembled by means of clamping. According to the invention, the device comprises bone screw- (1) or hook-type vertebrae anchoring elements, said elements consisting of a threaded cylindrical part (5) and a stop collar (7). A fixing nut (8) can be screwed on the threaded cylindrical part (5) in order to fix a connecting sliding piece (4) which is mounted on a securing rod (3) having a circular section. In order to ensure that said rod (3) and the connecting sliding piece (4) are secure, the securing rod (3) is clamped in a transverse groove (17) in the connecting sliding piece (4) using a clamp screw (21) and a little clamp (22) which is mounted in the corner of said groove. In this way, the inventive device is more rigid and can better support the vertebrae and, moreover, the device can be positioned and adjusted much more easily.