Cage-type intervertebral implant

A cage for a cage-like intervertebral implant, comprising a member divided into cavities, wherein the cage comprises a dished inner side wall, a cambered outer side wall, a front part, and a rear part, a first, inner radius of curvature being allocated to the dished inner side wall, and a second, outer radius of curvature being allocated to the cambered outer side wall;

• the side walls are connected to the front part and the rear part;
• the side walls are connected to at least one intermediate wall substantially perpendicular to the side walls, whereby the cage has at least two cavities;
• and the side walls, the front part, the rear part, and the at least one intermediate wall form an upper and a lower cage surface, a first lordosis angle being formed between said upper and lower cage surfaces in a front part—rear part direction such that said upper and lower cage surfaces are not parallel to each other in said front part—rear part direction, and a second lordosis angle being formed between said upper and lower cage surfaces in an outer side wall—inner wall direction perpendicular to said front part—rear part direction such that said upper and lower cage surfaces are not parallel to each other in said outer side wall—inner side wall direction, wherein the rear part has in its middle a hole with an internal thread, which is surrounded by two guide elements which run substantially parallel or in a V-shape.

A cage for a cage-like intervertebral implant, the cage comprising:

• a member divided into cavities;
• a concave-curved inner sidewall having a first inner radius of curvature;
• a convex-curved outer sidewall having a second outer radius of curvature;
• a front portion;
• a rear portion where both the concave-curved sidewall and the convex-curved sidewall are connected to the front portion and the rear portion, the concave-curved sidewall and the convex-curved sidewall being connected to a least one partition substantially perpendicular to both the concave-curved sidewall and the convex-curved sidewall to form a cage with at least two cavities wherein the concave-curved sidewall, the convex-curved sidewall, the front portion, the rear portion and the at least one partition forms an upper cage surface and a lower cage surface where the upper cage surface and the lower cage surface form a first lordosis angle in a front portion—rear portion direction such that the upper cage surface and a lower cage surface are not parallel to each other in the front portion—rear portion direction and the upper cage surface and the lower cage surface form a second lordosis angle in a concave-curved sidewall—convex-curved sidewall direction such that the upper cage surface and the lower cage surface are not parallel to each other in the concave-curved sidewall—convex-curved sidewall direction.