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Expandable spinal rods and methods of use

  • US 7,776,075 B2
  • Filed: 01/31/2006
  • Issued: 08/17/2010
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
First Claim
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1. A method of supporting vertebral members, the method comprising the steps of:

  • positioning a rod in proximity to the vertebral members while the rod is in a first orientation, the rod including first and second coupling members positioned at opposing ends of an expandable intermediate portion;

    introducing a substance into an interior of the intermediate portion of the rod;

    increasing a length of the rod by axially expanding the intermediate portion and separating the first and second coupling members with the expansion causing the first and second coupling members to seat into anchors mounted to the vertebral members;

    applying a distraction force to the vertebral members by inserting an additional amount of the substance into the interior of the intermediate portion of the rod when the coupling members are seated into the anchors and prevented from moving beyond the anchors;

    after increasing the length of the rod, securing the first and second coupling members to the anchors mounted to the vertebral members.

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