Intervertebral disk prosthesis or artificial vertebra
AssigneeSynthes USA, LLC
InventorsArmin Studer, jason Trachsel, Martin Wymann
Life of this patent
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Abstract
An intervertebral disk prosthesis having an essentially hollow cylindrical base element (1) which is provided with a casing (2) that is embodied as a bellows, a top end (3), and a bottom end (4), and a central longitudinal axis (5). The base element also includes an upper apposition plate (6), which is disposed perpendicular to the longitudinal axis (5) at the top end (3) of the base element (1) and rests on the base plate of the vertebra, and a lower apposition plate (7), which is arranged perpendicular to the longitudinal axis (5) at the bottom end (4) of the base element (1) and leans on the cover plate of a vertebra. The casing (2) serves a spring element having a defined spring rate.
Claims25
An intervertebral disk prosthesis or an artificial vertebral body, comprising:
- A) an essentially hollow-cylindrical basic body (1) with a jacket (2) constructed as a bellows, a top end (3), a bottom end (4) and a central longitudinal axis (5),
- B) a top apposition plate (6), provided transversely to the central longitudinal axis (5) on the top end (3) of the basic body (1), said top apposition plate (6) serving as a support for a base plate of a vertebral body, and
- C) a bottom apposition plate (7), provided transversely to the central longitudinal axis (5) on the bottom end (4) of the basic body 1, said bottom apposition plate (7) being adapted for placement on a cover plate of a vertebral body, and
- D) the jacket (2), constructed as a bellows, is constructed as a spring element with a specific spring rate, wherein
- E) the jacket (2) comprises a plurality of bellows inserted into one another.
Dependencies are inferred from the claim text.