Abstract: A bone anchoring device includes a bone anchoring element provided with a head for receiving a threaded shaft on which a clamping means is to be screwed. A spherical articulation is provided between the bone anchoring element and the threaded shaft to provide the threaded shaft with multiple orientations, and a rotational linkage is also provided between the bone anchoring element and the threaded shaft.

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: The invention relates to a fracture reduction instrument for an osseous body, extending between a distal end (2) and a proximal end, the distal end comprising at least one deformable element (5) suitable for passing from a relaxed position for positioning of the distal end inside the osseous body, to a deformed position for forming a cavity inside the osseous body, the deformable element being stressed by a shift mechanism (6) so that the deformable element may pass from one position to another and vice versa. According to the invention, the deformable element (5) is a blade whereof the two ends are provided with axes of rotation (7, 8) mounted freely in rotation between two assembly supports (9, 10) whereof at least one is stressed by the shift mechanism (6) to be mobile in translation so as to bring together the ends of the blade (5) by rotation of said ends.

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 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), characterised 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 implanting a disk prosthesis within a cervical spine includes a disk prosthesis holder having tines for frictionally engaging the disk prosthesis through an anterior to posterior movement, and a cervical disk distractor having jaws with guide rails for freely receiving the disk prosthesis. Inserting the cervical distractor while in a closed position into the intervertebral space allows an opening of the jaws for increasing a separation between opposing vertebrae. Inserting the disk prosthesis between the opened jaws using the cervical disk holder allows for a placing of the disk prosthesis within the cavity of the intervertebral space with an aligning of the disk prosthesis. Closing the jaws permits a removing of the cervical disk holder from the disk prosthesis with a subsequent removing of the cervical distractor resulting in an implanting of the disk prosthesis within the intervertebral space.

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 concerns a bone anchoring device comprising a bone anchoring element provided with a head for receiving a threaded shaft whereon a clamping means is designed to be screwed, a spherical articulation being provided between the bone anchoring element and the threaded shaft to provide the threaded shaft with multiple orientation. The invention is characterized in that it comprises means for rotational linkage between the bone anchoring element and the threaded shaft.

Abstract: A cervical disk prosthesis includes a ball and socket joint interposed between opposing plates for attaching to adjacent vertebrae. The bearing plate has a dimension in the frontal plane larger than a corresponding dimension of the upper plate for providing a limit stop for the upper plate, and by its outside face, a bearing surface for a vertebra that is greater than that presented by the second plate. The disk prosthesis has a trapezoidal form in the horizontal plane with the upper and smaller plate having a parallelepiped shape for defining flexion and extension mobility. One of the plates carries an elastic ring about the perimeter for making a shock absorbing contact with the opposing plate.

Abstract: A disk prosthesis for vertebrae includes two plates for attaching to adjacent vertebrae. A ball-and-socket joint is interposed between the two plates mounted atop one another and includes a spherical cap fitted onto an insert made of a ceramic material and mounted on one plate. A spherical cup operable with the spherical cap is fitted onto a second insert made of a ceramic material and mounted on the second plate. Each insert is mounted on a plate by means of a sliding link and a localized link to stop translation. The ball-and-socket joint is partly surrounded by an elastic membrane attached to the two plates for a linking one another.

Abstract: The purpose of the invention concerns an intersomatic implant for insertion in the intervertebral space established between two neighboring lumbar vertebrae in view of the anatomic restoration of the intervertebral space, the implant comes in the form of a cavity consisting of two sagittal walls (2, 3) connected by an anterior cross wall (5) and a posterior cross wall (4), the walls delimit an open volume for bone fill and present edges extending on one side to define a first cross side and on the other side to define a second cross side. According to the invention, edges (105) of anterior wall (5) of the two cross sides present inclined profiles converging in the direction of the outer side of the anterior wall so that this anterior wall forms a projection to aid in the penetration of the intervertebral space.

Abstract: The purpose of the invention involves a disk prosthesis comprising:

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: