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: A system for connecting a spinal osteosynthesis rod and a crossbar include a passage for receiving the crossbar and hinge mounted jaws for clamping the rod. A locking device biases the crossbar against the jaws. A return spring pulls the jaws relatively close to one another independently of the crossbar such that the jaws may clamp the osteosynthesis rod to ensure a stable mounting of the connection system to the osteosynthesis rod.

Abstract: The present invention concerns an implant for an osteosynthesis device in particular of the backbone and the specific tool for setting this implant, enabling a secure fixing and a simple and easy setting. The implant comprises a bone anchoring device (1) topped with a fixing head (3) consisting of two side branches (5) forming an open U and designed to receive a linking rod to be locked by clamping, by means of a threaded nut (6) to be screwed on matching threaded parts produced on the partially cylindrical outer walls (5a) of the fixing head (3) side branches, and comprises, in the nut (6) diametral zone, a plate mounted in free rotation. The implant, in combination with the corresponding tool, enables the setting with blind indexing of the plate between the U-shaped branches (5) of said head (3), before and during the clamping of the nut, which is performed with the same tool (10).

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: A disk prosthesis includes first and second plates (2, 3) to be fixed on neighboring cervical vertebrae and an articulation arrangement (7) inserted between the two plates in a superposed position. The articulation arrangement allows for flexion-tension movements in a sagittal plane (S) according to a limited clearance, lateral inflexion movements in a plane perpendicular to the sagittal plane (S) according to limited angular clearance, and relative rotation movements between the first and second plates according to a limited angular clearance. The first and second plates are assembled to form a prosthesis of a single piece.

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: A clamping nut suitable for co-operating with a threaded shank of an osteosynthesis appliance, the nut comprising an annular body and a tapped bore for cooperating with the threaded shank, the annular body being provided with turning means and with a transverse bearing face.

Abstract: In the osteosynthesis device of the invention, the elastically deformable connection system comprises:

Abstract: A lumbar intersomatic implant for insertion into the discal space between two adjacent vertebrae for reestablishing the anatomical intervertebral space, the implant being in the form of a generally rectangular cage having two sagittal walls interconnected by at least an anterior transverse wall and a posterior transverse wall, the walls defining between them an open volume for filling with bone. An “outer” one of the sagittal walls of the implant presents a top rim and a bottom rim each shaped to present at least one retention edge extending substantially in the sagittal plane, making insertion via a posterior path possible, and an outer face arranged to present a penetration assisting shape enabling the cage to be offset transversely to a locking position in the discal space, which position is obtained by the retention edge preventing the cage from being reversed transversely.

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.

Abstract: A disk prosthesis for cervical vertebrae. The prosthesis includes a spherical cap formed on a first insert, while a spherical cup is formed on a second inset, two inserts made of ceramic material, one of the inserts being mounted on a first plate while the other insert is mounted on a second plate in such a manner that the center of rotation of the joint is substantially centered relative to the edges of the plates, a spherical cup possessing a contact surface area that is not less than that of the spherical cap and being connected via an annular molding to the base of the insert, and a plate provided with the insert having the spherical cap includes an annular setback to leave clearance for the annular molding.

Abstract: A spinal implant device arranged to clamp at least one vertebra includes a link rod, a hook defining a central bore and secured to a fixing head, a counterhook, an elongate member, a position control device and an interconnection arrangement between the counterhook and the hook. The fixing head has a pair of upwardly extending members forming a channel configured to accommodate the link rod. A nut engages the fixing head to exert a downward force onto the link rod. The elongate member attaches at one end to the counterhook and slidably engages the central bore of the hook such that the hook and the counterhook cooperate to define a clamp. The position control device cooperates with the hook and the elongate member to selectively maintain the hook in a position relative to the counterhook.

Abstract: An intervertebral link device including at least one damper element constituted by a cage and a pin designed to be connected to bone anchor elements. The pin being engaged in a housing of the cage and being fitted with two elastically deformable members operating in opposition to an applied traction force or compression force. The damper element includes a pin that is mounted inside the cage by a joint allowing multidirectional relative pivoting between the pin and the cage, at least about the axes contained in a plane perpendicular to the pin and angular abutment between the cage and the pin enabling the multidirectional relative pivoting to be limited in amplitude to a determined value of about 4°.

Abstract: A system for intersomatic fusion and setting of vertebrae. The system includes at least one open internal cage arranged for receiving spongy bone or bone substitute and is designed to be interposed between two vertebrae during diskectomy. The cage (1) includes on its anterior face (5) an external element forming a plate (12) extending in a plane substantially perpendicular to the insertion plane of the cage (1), and has at each of its ends an anchor device (13,14) adapted for anchoring to at least two adjacent vertebrae to be secured to each other by the cage (1). The system can be separated into two parts, the cage and the plate.

Abstract: A disk prosthesis for cervical vertebrae. The prosthesis includes a spherical cap formed on a first insert, while a spherical cup is formed on a second inset, two inserts made of ceramic material, one of the inserts being mounted on a first plate while the other insert is mounted on a second plate in such a manner that the center of rotation of the joint is substantially centered relative to the edges of the plates, a spherical cup possessing a contact surface area that is not less than that of the spherical cap and being connected via an annular molding to the base of the insert, and a plate provided with the insert having the spherical cap includes an annular setback to leave clearance for the annular molding.