Guiding apparatus for X-ray-free screw placement by spinal posterior approach
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United States of America Patent
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Dec 6, 2016
Grant Date -
Oct 22, 2015
app pub date -
Nov 13, 2013
filing date -
Feb 20, 2013
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Abstract
A guiding apparatus for x-ray-free screw placement by a spinal posterior approach, comprising an interspinous spacer, a slide scale (1), and an angle-changing rod. The apparatus is simple to operate, easy to grasp, and well accepted by physicians. A reliable effect is provided in screw placement. Significantly reduced X-ray exposure is allowed for patients and medical staff. In a small-incision minimally invasive screw placement operation, even without exposing the spinal ligament, a small spike-like protrusion of a base (2) of the interspinous spacer can ensure accurate interspinous positioning across the skin. This is applicable for both minimally invasive and incision surgeries and has a wide range of uses.
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