Depuy Synthes Products, Inc.

Synthes Usa, LLC

Mario Gago

Robert Frigg

Beat Lechmann

Michael Mayer

Armin Studer

Roger Buerki

Jason Trachsel

The inventive intervertebral implant (), in particular an artificial intervertebral disc comprises a central axis (), a top part () and a lower part (), wherein A) the top part () is provided with a top apposition surface () which rests on a base plate of a superimposed vertebral body, B) the lower part () is provided with a lower apposition surface () for resting on the covering plate of an underneath vertebral body, C) one part () comprises a convex joint element () provided with a convex sliding surface () and the other part () comprises a joint shell () provided with a complementary concave surface, D) the convex joint element () and the convex joint shell () form a joint () by means of which the two parts () are rotatable with respect to each other around at least one axis of rotation and E) the intervertebral implant () is permeable to x-rays.

Intervertebral implant

An intervertebral disk prosthesis or the intervertebral implant has a cavity-like middle part with a longitudinal axis, an upper end, a lower end, an upper apposition plate, and a lower apposition plate. The upper apposition plate is placed on the upper end of the middle part such that it is perpendicular to the longitudinal axis. The upper apposition plate is suited for resting against the base plate of a vertebral body. The lower apposition plate is placed on the lower end of the middle part such that it is perpendicular to the longitudinal axis. The lower apposition plate is suited for resting against the cover plate of a vertebral body. The middle part has at least two coaxially arranged plate springs, which gives the middle part a progressive spring characteristic.

Intervertebral disk prosthesis or artificial vertebral body

Growing community of inventors

Basel, Switzerland

Mario Gago