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INSTRUMENTS AND METHODS FOR ADJUSTING SEPARATION DISTANCE OF VERTEBRAL BODIES WITH A MINIMALLY INVASIVE SPINAL STABILIZATION PROCEDURE

  • US 20100069972A1
  • Filed: 11/20/2009
  • Published: 03/18/2010
  • Est. Priority Date: 12/02/2004
  • Status: Active Grant
First Claim
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1. A system for adjusting a distance between vertebral bodies of a human spine, comprising:

  • a first extender detachably coupled to a first bone fastener assembly that is secured to a first vertebral body, wherein the first bone fastener assembly secures to a rod so as to inhibit movement of the first bone fastener assembly relative to the rod;

    a second extender detachably coupled to a second bone fastener assembly that is secured to a second vertebral body, wherein the second bone fastener assembly is movably coupled to the rod to allow the second bone fastener to move along the rod relative to the first bone fastener assembly; and

    an adjuster having;

    a first handle coupled to a shaft, wherein the shaft detachably engages the adjuster to the first extender; and

    a second handle having a driver engager, wherein a driver detachably engages the adjuster to the second extender through the driver engager of the adjuster,wherein rotation of the first handle and the second handle towards each other about a pivot point forces the second extender to move towards the first extender, whereby the second bone fastener assembly secured to the second vertebral body is forced to move towards the first bone fastener assembly secured to the first vertebral body, causing compression of the first vertebral body and the second vertebral body.

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