Joimax Gmbh

Clemens Barthold

Wolfgang Ries

Alexander Dürr

Tobias Scheinost

In an intervertebral implant having at least two upper and two lower contact bodies that have contact surfaces. An actuator has a threaded body which has an extension axis and is provided with opposite-handed threads arranged one behind the other. Wedges sit on the threaded body in an axially moveable manner and can be moved along the threaded body by rotating the same. Ramps of at least one ramp body of a wedge engage at least with counter-surfaces of at least some of the contact bodies and extend toward one another at a finite angle of less than 90°. The wedges are double wedges having two ramp bodies arranged one behind the other, and the ramps of one ramp body are oriented differently to the ramps of the other ramp body. The ramps of the first ramp body engage directly with the contact bodies laterally.

Intervertebral implant

An intervertebral implant with a support portion () and a proximal contact portion () adjoined thereto in the longitudinal direction, is better adapted, as an intervertebral implant, to the contours of the lower and upper sides of the vertebrae that are spaced apart by the implant. An upper side () and a lower side () of the implant are configured symmetrically relative to a horizontal center plane (L-Q). In particular a height of the support portion between the transition (U) thereof to the contact portion () and a distal end face () facing away from the contact portion () are greater than the height at the transition (U) and at the distal end face ().

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Karlsruhe, Germany

Clemens Barthold