Bone anchoring system, associated implant and instrumentation

1. An anchoring system, for concurrent implantation of a pair of anchoring devices in a bone tissue, the system comprising:

a pair of anchoring devices, each anchoring device comprising a curved body extending between an anterior end configured to penetrate with limited deformation in the bone tissue and a posterior end configured to remain turned outward of the bone tissue and coupled to an implant, the pair of anchoring devices defining a longitudinal axis prior to implantation;

an guide retaining the pair of anchoring devices along the anterior ends of each anchoring device at least partially within a pair of guiding surfaces disposed within the guide, each guide surface of the pair of guiding surfaces curved in opposing directions and configured to guide one of the pair of anchoring devices;

a tubular support including an interior bore dimensioned to receive the guide retaining the pair of anchoring devices for insertion into an implant; and

at least one impactor comprising a head, with shapes and dimensions adapted for sliding inside the tubular support and pushing the pair of anchoring devices towards the bone tissue.

2. The anchoring system according to claim 1 , further comprising at least one implant, the at least one implant including a passage to receive the guide and the pair of anchoring devices.

3. The anchoring system according to claim 2 , in which said implant comprises at least one bone fixation plate configured to be fixed on said bone tissue by at least one anchoring device of said system.

4. The anchoring system according to claim 2 , in which the implant comprises at least one opening able to receive a bone graft.

5. The anchoring system according to claim 4 , in which the implant comprises at least one peripheral wall, at least one part, called posterior, includes at least one passage including dimensions for receiving at least one anchoring device configured to allow the passing of at least a portion of the anchoring device into the bone tissue.

6. The anchoring system according to claim 5 , in which the peripheral wall is configured, at least at the posterior part, to couple with at least one gripping end of an instrument.

7. The anchoring system according to claim 1 , in which each anchoring device of the pair of anchoring devices has a shape of plate curved and elongated along a longitudinal axis extending between its anterior end and its posterior end.

8. The anchoring system according to claim 7 , in which a plate of each anchoring device is provided with at least one longitudinal rib or with at least one second plate extending along the longitudinal axis, not parallel to a first plate, and giving to each anchoring device an L-shaped, T-shaped, V-shaped, U-shaped or H-shaped section.

9. The anchoring system according to claim 8 , in which the impactor comprises at least one surface for pushing the pair of anchoring devices and, the anchoring device and the impactor comprise at least one mutual cooperation abutment for maintaining the pair of anchoring devices in position with respect to the impactor.

10. The anchoring system according to claim 9 , in which the pair of anchoring devices are retained together by at least one retaining element.

11. The anchoring system according to claim 10 , in which the retaining element comprises a ring-shaped body positioned around or in proximity to the posterior end of the pair of anchoring devices.

12. The anchoring system according to claim 11 , in which the retaining element comprises an external threading or an internal tapping complementary of another instrument of the system.

13. The anchoring system according to claim 12 , wherein each anchoring device of the pair of anchoring devices includes at least one radius of curvature and is positioned one beside the other inside the support, and the pair of anchoring devices are inside the tubular support, in a folded-back position in which their radii of curvature are oriented in different directions, so as to allow deployment towards a deployed position when they are implanted in the bone tissue.

14. The anchoring system according to claim 13 , in which the plate of each anchoring device of the pair of anchoring devices comprises at least one housing or a groove able to receive a binding means allowing to bind each anchoring device to the implant.

15. The anchoring system according to claim 14 , in which the support and the plate comprise mutual coupling means.

16. The anchoring system according to claim 15 , in which the support and the implant comprise mutual coupling means.