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Adjustable distraction cage with linked locking mechanisms

  • US 8,992,620 B2
  • Filed: 03/15/2013
  • Issued: 03/31/2015
  • Est. Priority Date: 12/10/2008
  • Status: Active Grant
First Claim
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1. A spinal implant for placement between first and second vertebral bodies, comprising:

  • at least two separate first members having a surface for engaging a first vertebral body and a side surface;

    a second member cooperating with the at least two first members and having a surface for engaging a second vertebral body;

    a housing; and

    at least two independently extendable support elements at least partially within the housing, each having a contracted configuration to facilitate deployment of the implant between the first and second vertebral bodies and at least one extended configuration to extend said at least two first members away from the second member so that the surface thereof engages the first vertebral body,wherein the at least two first members comprises separate members with one of the separate members connected to each of the at least two independently extendable support elements, andwherein the at least two first members accommodates different extended heights of the at least two extendable support elements with respect to each other;

    wherein the at least two independently extendable support elements comprise fluid actuatable pistons actuatable by a common actuator to different heights above the second member andwherein the side surfaces of the at least two first members are adjacent to each other when the at least two independently extendable support elements are in the contracted configuration.

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