Intervertebral Implant
OwnerRobert FRIGG, Beat LECHMANNinventors
Life of this patent
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Abstract
An intervertebral implant, specifically an artificial intervertebral disk, with a central axis, and an upper plate-shaped section, suitable for laying onto the base plate of a vertebral body lying on top, a lower plate-shaped section, suitable for laying onto the cover plate of a vertebral body lying below, wherein a central, plate-shaped section is arranged between the upper and the lower sections, a first circular-cylindrical rod with a longitudinal axle is arranged between the upper section and the central section, and a second circular-cylindrical rod with a longitudinal axle is arranged between the lower section and the central section.
Claims15
An intervertebral implant for insertion in-between adjacent upper and lower vertebrae, the implant comprising:
- an upper plate having a bone engaging surface for contacting at least a portion of the upper vertebrae and a bottom surface opposite the bone engaging surface;
- a lower plate having a bone engaging surface for contacting at least a portion of the lower vertebrae and a top surface opposite the bone engaging surface;
- and
- an intermediate plate having a first surface and a second surface;
- wherein the bottom surface of the upper plate and the first surface of the intermediate plate define a first sliding surface and the top surface of the lower plate and the second surface of the intermediate plate define a second sliding surface, the first sliding surface being sized and configured to permit movement of the upper plate with respect to the intermediate plate in only one of the anterior-posterior direction or the medial-lateral direction, the second sliding surface being sized and configured to permit movement of the lower plate with respect to the intermediate plate in only the other of the anterior-posterior direction or the medial-lateral direction.
An intervertebral implant for insertion in-between adjacent upper and lower vertebrae, the implant comprising:
- an upper plate having a bone engaging surface for contacting at least a portion of the upper vertebrae and a bottom surface;
- a lower plate having a bone engaging surface for contacting at least a portion of the lower vertebrae and a top surface;
- and
- an intermediate plate having a first surface and a second surface;
- wherein the bottom surface of the upper plate and the first surface of the intermediate plate define a first sliding surface and the top surface of the lower plate and the second surface of the intermediate plate define a second sliding surface;
- wherein one of the first and second sliding surfaces permits movement in the anterior-posterior direction while the other of the first and second sliding surfaces permits movement in the medio-lateral direction.
An intervertebral implant for insertion in-between adjacent upper and lower vertebrae, the implant comprising:
- an upper plate having a bone engaging surface for contacting at least a portion of the upper vertebrae and a bottom surface opposite the bone engaging surface;
- a lower plate having a bone engaging surface for contacting at least a portion of the lower vertebrae and a top surface opposite the bone engaging surface;
- and
- an intermediate plate having a first surface and a second surface;
- wherein the bottom surface of the upper plate and the first surface of the intermediate plate define a first sliding surface and the top surface of the lower plate and the second surface of the intermediate plate define a second sliding surface, the first sliding surface being sized and configured to permit movement of the upper plate with respect to the intermediate plate in a first direction, the second sliding surface being sized and configured to permit movement of the lower plate with respect to the intermediate plate in a second direction, the second direction being substantially transverse to the first direction.
Dependencies are inferred from the claim text.