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Expandable fusion device and method of installation thereof

  • US 8,556,979 B2
  • Filed: 04/19/2012
  • Issued: 10/15/2013
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
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1. An intervertebral implant comprising:

  • a first endplate having an upper side and a lower side, the upper side of the first endplate including a textured surface;

    a second endplate having an upper side and a lower side, the lower side of the second endplate including a textured surface;

    a body portion having a first end, a second end, a first side portion connecting the first end and the second end, and a second side portion connecting the first end and the second end;

    a translation member received between the first endplate and the second endplate, the translation member including at least two first angled surfaces of which at least one of the two first angled surfaces is configured to engage a contact surface of the first endplate and at least two second angled surfaces of which at least one of the two second angled surfaces is configured to engage a contact surface of the second endplate, wherein the at least two first angled surfaces are separated via a bridge that extends along a longitudinal length of the translation member,wherein movement of the translation member causes at least one of the two first angled surfaces to push against the contact surface of the first endplate and at least one of the two second angled surfaces to push against the contact surface of the second endplate, thereby causing outward expansion of the first endplate and second endplate, wherein the at least two first angled surfaces are sloped generally in a same direction.

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