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Expandable Fusion Device and Method of Installation Thereof

  • US 20120059473A1
  • Filed: 09/03/2010
  • Published: 03/08/2012
  • Est. Priority Date: 09/03/2010
  • Status: Active Grant
First Claim
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1. An intervertebral implant comprising:

  • a first endplate having a first end and a second end, the first endplate comprising an upper side, a lower side, first ramped surfaces proximate the first end, and second ramped surfaces proximate the second end;

    a second endplate having a first end and a second end, the second endplate comprising an upper side, a lower side, first ramped surfaces proximate the first end, and second ramped surfaces proximate the second end;

    a central ramp having a first end and a second end, the central ramp comprising a expansion portion at the first end and an extension extending from the expansion portion, the expansion portion comprising first ramped surfaces in engagement with the first ramped surfaces of the first endplate and second ramped surfaces in engagement with the second ramped surfaces of the second endplate; and

    a driving ramp comprising a bore extending through the driving ramp, the driving ramp comprising ramped surfaces in engagement with the first ramped surfaces of the second endplate;

    wherein the central ramp is configured to move in a first direction and cause the first endplate and the second endplate to move outwardly and away from one another.

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