Patent ID: 6911030
Filing Date: 2005-06-28
Classification: A61B

Abstract:
1. A system for osteosynthesis on the vertebral column for stabilization of vertebrae comprising: at least one rod-shaped linkage element; at least two fixation means to be anchored into a vertebra; each said fixation means having a head in the shape of a fork having two branches, said two branches defining a reception space closely in the form of a U for receiving the at least one rod-shaped linkage element; said head having a bottom in the shape of a horse saddle; a blocking screw to be screwed in the reception space to fix the at least one linkage element between the two branches of the fork shaped head; an independent closure to be fixed on the head after positioning the at least one linkage element in the fork of the head; said independent closure part being in the general shape of a U with branches cooperating with the branches of the fork shaped part of the head; said closure part having a bottom which comprises a threading for cooperation with the blocking screw; and guide means for positioning said closure part on said head, said guide means including inclined undercut portions in external lateral surfaces of the forked shaped part of the head forming arched shoulders.