Intervertebral implant comprising a three-part articulation

Abstract

Abstract The invention relates to an intervertebral implant having a central axis (1) which is essentially parallel or coaxial in relation to the longitudinal axis of the vertebral column, and comprising: A) an upper end piece and a lower end piece (2; 3), each having an outer surface (5; 6) which is perpendicular to the central axis (1) and respectively placed against one of the two end surfaces of two adjacent vertebral bodies, and each having a concave inner surface (7; 8) arranged opposite each other; and B) a convex articulated body (4) which is positioned between the end pieces (2; 3) and is arranged on the concave inner surfaces (7; 8) of the two end pieces (2; 3) in a sliding manner, C) the first concave inner surface (7) being part of an envelope surface (11) which is rotationally symmetrical in relation to a first rotational axis (12) perpendicular to the central axis (1); and D) the second concave inner surface (8) being part of a cone envelope surface (16) which is rotationally symmetrical in relation to a second rotational axis (14) perpendicular to the central axis (1).

Inventors

• 👤 Daniel Baumgartner
• 👤 Adrian Burri
• 👤 Claude Mathieu

Bibliographic Details