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SPINAL SCREW ASSEMBLY

  • US 20110190821A1
  • Filed: 01/27/2011
  • Published: 08/04/2011
  • Est. Priority Date: 02/04/2010
  • Status: Active Grant
First Claim
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1. A spinal screw assembly comprising:

  • a bone-anchoring member comprising a main shaft, a washer head and a spherical head, wherein said spherical head extends upward from the top end of the main shaft and said washer head extends laterally from a location of the main shaft between the main shaft'"'"'s top end and bottom end;

    a washer polyaxially rotatable and positionable around the washer head and configured to be placed at a first angle relative to the main shaft; and

    a seat polyaxially rotatable and positionable around the spherical head independent from said washer and configured to be placed at a second angle relative to the main shaft, wherein said second angle is independent from said first angle.

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