Abstract: The invention concerns an intervertebral implant that includes a spacer designed firstly to assume an implantation shape in which the spacer has two opposed channels (3, 4) bordered by retaining wings (3a, 3b, 4a, 4b), intended to receive the two spinous processes of two vertebrae, and secondly an insertion shape in which the parts of the implant forming the channels (3, 4) are separated by a value (d), and on at least one of their sides are lacking the retaining wings (3a, 3b, 4a, 4b), characterized in that the implant (1) is made from a shape-memory material, so that the implant changes to its implantation shape when it is subjected to heat, and so that, in this implantation shape, the parts of the implant forming the channels (3, 4) are separated by a value (D) that is greater than the value(d) of the insertion shape, in order to ensure the separation of the spinous processes.

Abstract: An osteosynthesis device having an elastically deformable connection system including a deformable connection member wherein a in a sagittal plane, determined stiffness for exerting in a return force on flexion-extension movements between the fixing portions, and in a frontal plane perpendicular to the sagittal plane, determined stiffness for exerting return force on lateral inflexion movements between the fixing portions.

Abstract: A clamping nut suitable for co-operating with a threaded shank of an osteosynthesis appliance, the nut including an annular body and a tapped bore for cooperating with the threaded shank. The annular body is provided with a structure which enables turning the body and with a transverse bearing face. The osteosynthesis nut further includes a ring mounted in a housing of the annular body which is provided internally with the tapped bore, and which cooperates externally with the annular body.

Abstract: The invention concerns a stabilized interbody fusion system for vertebrae, of the type comprising an interbody implant (4) designed to be inserted in the intervertebral space defined between two neighboring vertebrae to be mutually secured, so as to restore the height and the angle of the lordosis of the vertebral segment defined by the two neighboring vertebrae and a stabilizing plate (17) provided, at each of its ends, with at least a passage hole (18) for an anchoring screw, the plate (17) and the implant (4) being provided with mutual assembly means, such that after assembly, the stabilizing plate (17) extends on each side of the implant to enable the stabilizing plate to be anchored on the neighboring vertebrae through the screws, characterized in that it comprises spacing means (30), interposed between the stabilizing plate (17) and the implant (4), to enable the stabilizing plate to be positioned at a specific distance relative to the implant.

Abstract: The invention relates to an implant for an osteosynthesis device, in particular for the spine, the implant including a first assembly itself including: a fixing body having a housing for receiving the head of an anchor screw in such a manner as to define a ball joint; and a positioning ring; and a second assembly itself including a nut type system. According to the invention: the first assembly has a positioning ring mounted in the fixing body; and the second assembly has a nut type system, adapted, when tightened on the body, to bear against the bracing rod and to cause the positioning ring to move in linear displacement.

Abstract: The invention relates to an intersomatic implant designed to be inserted in the disk space defined between two adjacent vertebrae, namely an overlying vertebra and an underlying vertebra, for the purpose of reestablishing the anatomic space between the vertebrae, the implant being in the form of a cage (1) that is generally in the shape of a rectangular block having at least two sagittal walls (2, 3) interconnected at least by an anterior transverse wall (4) and by a posterior transverse wall (5), the walls (2 to 5) presenting rims (10) extending on one surface to define a first transverse face (8) and on the other side to define a second transverse face (9). According to the invention, the implant comprises: a first transverse face (8) presenting in the sagittal plane a convex profile congruent with the sagittal anatomic profile of an overlying vertebra; and a second transverse face presenting in the frontal plane a convex profile congruent with the frontal anatomic profile of an overlying vertebra.

Abstract: An intervertebral linking device of the type comprising bone anchoring elements to be interconnected by at least one intervertebral linking rod. The intervertebral linking device includes a the fixing system mounted on a connection bar the fixing system including at least one sliding displacement of the fixing system associated with a locking nut to lock said system in a fixed position. The connection bar is mounted on each anchoring element a guiding collar in rotation around an axis of the connection bar and locking the connection bar in a fixed specific position.

Abstract: The invention relates to an anterior osteosynthesis plate for lumbar-lumbar or lumbar-sacral vertebrae, the plate being of the type comprising: an elongate body: adapted to cover of the anterior portions of two consecutive vertebrae; possessing an anterior face (6) and an opposite posterior face (7); presenting end zones that are interconnected by a connection zone (11); and provided with two through holes for anchoring screws.