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Implant assembly and method for use in an internal structure stabilization system

  • US 7,618,442 B2
  • Filed: 11/16/2004
  • Issued: 11/17/2009
  • Est. Priority Date: 10/21/2003
  • Status: Expired due to Term
First Claim
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1. An assembly for use in spinal stabilization procedures, comprising:

  • a first bone anchor assembly comprising;

    a first anchora first poly-axial head mated with the anchor such that the anchor is movable in relation to the poly-axial head, the first poly-axial head including a cavity; and

    a second bone anchor assembly comprising;

    a second anchor;

    a second poly-axial head mated with the second anchor such that the second anchor is movable in relation to said second poly-axial head;

    a slide ring rotatably mated in the second poly-axial head;

    a connector slidably mated in the slide ring along a distal end, and having a proximal end having an enlarged portion;

    wherein the connector is movable from a first position axially inline with the second bone anchor to a second position wherein the enlarged portion of the connector rests in the cavity of the first poly-axial head, and wherein the first position is used to implant the first bone anchor assembly, and the second position used to hold the assembly in a fixed orientation; and

    a snap ring in the first poly-axial head, the snap ring holding the enlarged portion of the connector in the cavity.

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