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US 7,303,583 B1Granted
Intervertebral implant
AssigneeSynthes USA, LLC
InventorsManuel Schär, Jérôme Bernhard, Konrad Tagwerker
Life of this patent
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Abstract
An intervertebral implant is shaped in the form of a hollow cylinder and has a cover face, a base face, a hollow cylinder wall with an outer lateral area and an inner lateral area, as well as a hollow cylinder central axis. The implant is formed at least 95 percent by volume of a radiolucent material which has a modulus of elasticity of between 1 and 20 GPa. Postsurgical observation is permitted by means of X-rays, and at the same time the implant has a high degree of biocompatibility.
Claims28
An intervertebral implant consisting:
- a first face for engaging a first vertebral endplate and a second face for engaging a second vertebral endplate, outer and inner walls extending between the faces, a central axis, an opening defined by the inner wall, a through-slot extending from the first face through to the second face and from the outer wall through to the inner wall, the through-slot aligned with the central axis;
- wherein at least 95 percent by volume of the implant is formed of a radiolucent material with a modulus of elasticity between 1 GPa and 20 GPa;
- wherein the first face and the second face each have a plurality of three-dimensional projections extending therefrom;
- wherein at least one of the first and second faces is provided with at least one guide notch and the second face contains a perforation, the perforation not aligned with the central axis;
- and
- wherein at least a portion of the implant is formed of a metallic, radiopaque material.
3 more elements
Dependencies are inferred from the claim text.