Importance

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Abstract

The object of the invention is an implantable intervertebral connection device comprising at least two pedicular screws (1, 2) provided in their upper portion with a hexagonal head (3) prolonged by a cylindrical bearing (4, 4') and an inter-screw connection of adjustable length anchored at each end on said bearings, characterized in that said inter-screw connections constituted, on the one hand, by a ball (7, 7') preferably of a resiliently deformable material threaded on each bearing (4) and, on the other hand, by two connection elements (E1, E2; E'1, E'2) in prolongation of each other and interconnected by a screw system (17, 18; 18', 41, 42) for adjustment of spacing, the free ends of the elements being shaped as a cup (8, 9; 8', 9') which is concave and threadable on said bearing (4, 4') and matching said ball (7, 7') such that in line with each pedicular screw (1, 2; 1', 2') the ball will be sandwiched between two cups (8, 9; 8', 9') of two connections associated with the screw, means (6, 6') being provided to bring together toward each other the two cups (8, 9; 8', 9') by gripping said ball (7, 7') and securing the assembly of the pedicular screw. Use in treatment of the vertebral column.

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First Claim