Spondylodesis device
OwnerFriedrich Magerl, Christian Widmer +1inventors
InventorsFriedrich Magerl, Christian Widmer, Roger Stadler
Life of this patent
Estimating the term…
Abstract
Disclosed is a device comprising at least one intervertebral implant (3) and at least one plate (4,5) that is to be connected to the intervertebral implant (3) and an adjacent spine (21-23). The intervertebral implant (3) is connected to at least two spaced-apart plates (4,5). One end of both plates (4,5) respectively forms a fixable joint along with the intervertebral implant (3). Preferably, at least one of the plates (5,4) is embodied in a Z-shaped or L-shaped manner. The inventive device provides for great adaptability to the anatomic characteristics of the spinal column and a modular structure while the number of parts is kept small.
Claims14
A device for spondylodesis for anterior intersomatic spondylodesis of the cervical spine, comprising:
- an intervertebral implant with at least two hemispherical depressions, where the intervertebral implant functions as a pressure- absorbing spacer which is adapted to stabilize the spondylodesis and ensures that a solid osseous bridge forms between adjacent vertebral bodies, wherein the intervertebral implant is formed as a unit having only a single recess therein that extends through the implant to open on opposite sides of the implant to an outside of the implant and adapted to face along the longitudinal axis of the spinal column when implanted;
- wherein the intervertebral implant is connected to at least two plates;
- wherein the intervertebral implant extends transversely to the at least two plates which are arranged at a distance from one another, one end of each of the plates form a fixable joint together with the intervertebral implant;
- wherein a second intervertebral implant is provided;
- wherein one of the plates is L-shaped or I-shaped and adapted to connect with an adjacent vertebra and the other plate is Z-shaped and connects with said second intevertebral implant;
- wherein a third plate is connected to said second intervertebral implant, wherein said third plate is L-shaped or I-shaped,
- wherein each of the plates have, at least at one end, a hemispherical joint part formed as a unit, which protrudes transversely down from each plate;
- wherein said joint part of each plate has a passage for a locking screw and engages in one of the hemispherical depressions of their respective intervertebral implant to form a ball joint.
Dependencies are inferred from the claim text.