US 6,562,072 B1Granted

Implant for insertion between spinal column vertebrae

AssigneeAesculap AG

InventorsFranz Konstantin Fuss, Ronald J. Sabitzer

Life of this patent

Estimating the term…

Loading patent…

Abstract

An implant for insertion between vertebrae of the verterbral column having a substantially rectangular or trapezoidal cross-section and covering faces adapted to face the adjacent vertebrae which are porous and/or designed with a profile. The implant has such a width that it substantially covers at the maximum the rear half of the vertebrae facing the spinous process, preferably at the maximum the rear third of the vertebrae facing the spinous process, and such a length that it substantially covers the rear region of the vertebrae. The limiting surface of the implant facing the inside of the vertebrae and extending in the direction of the adjacent vertebrae is convex. This enables an adequate and reliable supporting function to be achieved with only one implant and can easily be inserted sideways from behind.

Claims22

Dependent claims

An implant for insertion between the vertebrae of a spinal column, wherein:

surfaces of a substantially rectangular or trapezoidal-section implant adapted to face adjacent vertebrae are porous and/or are provided with a profiled structure,
a breadth of the implant is adapted to cover at most a rearward half of the vertebra facing the spinous process,
a length of the implant is adapted to essentially overlap the rearward region of the vertebra,
a first boundary face of the implant adapted to face the interior of the vertebra and extend towards the adjacent vertebrae is curved convexly over at least a portion of a wall of said first boundary face,
a second boundary face of the implant adapted to face the spinous process is curved concavely, said second boundary face being free of break-throughs,
the first boundary face comprises at least one depression which extends into, but not through, said wall of said first boundary face, and
two borings extending through the implant, wherein each boring runs from respective outer faces of said implant into said depression in a central portion of the implant.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/620,031Filed 20 Jul 2000 · continuation
Priority: AT 110/9823 Jan 1998
Granted: 13 May 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

A61F 2/4465
For the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages: having a circular or kidney shaped…
A61F 2/4455
For the spine, e.g. vertebrae or spinal discs: for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion…
A61F 2/30767
Joints: special external or bone-contacting surface, e.g. coating for improving bone ingrowth
A61F 2/442
For the spine, e.g. vertebrae or spinal discs: intervertebral or spinal discs, e.g. resilient