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Implant with Nested Members and Methods of Use

  • US 20100198352A1
  • Filed: 04/08/2010
  • Published: 08/05/2010
  • Est. Priority Date: 07/21/2006
  • Status: Active Grant
First Claim
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1. An implant movable between collapsed and expanded orientations to space apart first and second vertebral members, the implant comprising:

  • a first contact surface to contact against the first vertebral member;

    a second contact surface to contact against the second vertebral member;

    an outer wall extending between the first and second contact surfaces and comprising a plurality of separate outer wall sections positioned in a nested arrangement; and

    an enclosed inner chamber positioned within the outer wall and formed by a plurality of separate struts positioned in a nested arrangement;

    in the collapsed orientation, the implant having a first height measured between the contact surfaces and having a greater amount of overlap in the plurality of separate outer wall sections and a greater amount of overlap in the plurality of separate struts;

    in the expanded orientation, the implant having a greater second height measured between the contact surfaces and having a lesser amount of overlap in the plurality of separate outer wall sections and a lesser amount of overlap in the plurality of separate struts;

    the enclosed inner chamber being sealed to contain a substance in both the collapsed and expanded orientations.

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