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Prosthetic joint with articulating surface layers comprising ADLC

  • US 10,182,924 B2
  • Filed: 12/27/2005
  • Issued: 01/22/2019
  • Est. Priority Date: 12/28/2004
  • Status: Active Grant
First Claim
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1. An intervertebral implant comprising:

  • an upper apposition member including an upper terminal surface sized and configured to abut a first vertebra, a lower surface opposite the upper terminal surface, and a first recess that extends into the lower surface;

    a lower apposition member including a lower terminal surface sized and configured to abut a second vertebra, an upper surface opposite the lower terminal surface, and a second recess that extends into the upper surface;

    a first substrate coupled to the upper apposition member, the first substrate including a first curved surface;

    an articulating surface layer and a bonding layer positioned between the articulating surface layer and the first curved surface, the articulating surface layer including a multi-layer composite, wherein the multi-layer composite includes a layer consisting of titanium and a layer consisting of titanium nitride adjacent the layer consisting of titanium; and

    a second substrate coupled to the lower apposition member, the second substrate including a second curved surface configured to movably contact the first curved surface so that the upper apposition member is moveable with respect to the lower apposition member.

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