Pedicle screw assembly

Details Pedicle screw assembly Pedicle screw assembly

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/70 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2359373

A stabilizing assembly includes a fastener. The head of the fastener includes a center, a first radial surface and a second radial surface. The first radial surface defines a first radius from the center. The second radial surface defines a second radius from the center. The first radius is greater than the second radius. The assembly includes a coupling element having a rod receiving opening for receiving a stabilizing rod, a bore for receiving the fastener, and a conical-shaped seat for engaging the first radial surface when the fastener is positioned in the bore. A locking element applies a force upon the stabilizing rod. The rod in turn, engages the second radial surface for forcing the underside of the head against the conical-shaped seat so as to prevent further pivotal and rotational movement of the fastener and the coupling element relative to one another.

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