Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments

An apparatus for implantation of a spinal implant comprising:

• an intersomatic cage configured for implantation in an intervertebral space between adjacent vertebrae of a spinal column, the intersomatic cage comprising a peripheral wall and a receptacle extending from a surface of the peripheral wall and traversing at least a portion of the peripheral wall, the receptacle configured for passage of an anchoring device having a body with a curved shape along a longitudinal axis that describes an arc and for orientation of the anchoring device during implantation of the anchoring device in a vertebra;
• an anchoring device for anchoring the intersomatic cage between the adjacent vertebrae, the anchoring device comprising a body having an elongated shape along a longitudinal axis extending between a penetration end and an abutment end, the body having a curved shape along the longitudinal axis that describes an arc, and the body having dimensions and a radius of curvature configured for implantation of the anchoring device in one of the vertebrae by presentation of the longitudinal axis along an approach axis that is substantially along a plane of the intervertebral space and by insertion of the anchoring device through a receptacle in the intersomatic cage having dimensions and orientation adapted to the dimensions and radius of curvature of the anchoring device, with the anchoring device traversing at least a portion of the intersomatic cage;
• and
• an instrument comprising
• an impactor having an impactor head configured to push the anchoring device;
• and
• an elongated guide having a gripping end and a push end, the guide comprising
• a gripping device disposed at the gripping end and configured to grip the intersomatic cage, and
• a guide head configured to at least partially accommodate the impactor head, the guide head comprising at least one guidance surface having a radius of curvature substantially the same as the radius of curvature of the anchoring device and configured to guide the anchoring device through a receptacle of the intersomatic cage.

An apparatus for implantation of a spinal implant comprising:

• an intersomatic cage configured for implantation in an intervertebral space between adjacent vertebrae of a spinal column, the intersomatic cage comprising:
• a peripheral wall;
• and
• a receptacle extending from a surface of the peripheral wall and traversing at least a portion of the peripheral wall, the receptacle configured with dimensions and orientation that are adapted
• to receive an anchoring device having an arcuate shape along a longitudinal axis that is configured for implantation in one of the vertebrae by presentation of the longitudinal axis along an approach axis that is substantially along a plane of the intervertebral space and
• to orient the anchoring device during implantation of the anchoring device in a vertebra;
• an anchoring device for anchoring the intersomatic cage between the adjacent vertebrae, the anchoring device comprising a body having an elongated shape along a longitudinal axis extending between a penetration end and an abutment end, the body having a curved shape along the longitudinal axis that describes an arc, and the body having dimensions and a radius of curvature configured for implantation of the anchoring device in one of the vertebrae by presentation of the longitudinal axis along an approach axis that is substantially along a plane of the intervertebral space and by insertion of the anchoring device through a receptacle in the intersomatic cage having dimensions and orientation adapted to the dimensions and radius of curvature of the anchoring device, with the anchoring device traversing at least a portion of the intersomatic cage;
• and
• an instrument comprising:
• an impactor having an impactor head configured to push the anchoring device;
• and
• an elongated guide having a gripping end and a push end, the guide comprising
• a gripping device disposed at the gripping end and configured to grip the intersomatic cage, and
• a guide head configured to at least partially accommodate the impactor head, the guide head comprising at least one guidance surface having a radius of curvature substantially the same as the radius of curvature of the anchoring device and configured to guide the anchoring device through a receptacle of the intersomatic cage.