Spinal fixation device with variable stiffness

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United States of America Patent

PATENT NO 7842072
APP PUB NO 20070233075A1
SERIAL NO

11377476

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A device for spinal stabilization includes bone anchors, a metal cord, and a spacer. The materials of the cord and spacer are chosen to allow the physician to customize the stiffness of the stabilization device based on a particular patient's needs. Each bone anchor has a clamping mechanism for securing the cord to the bone anchor. In an assembled and implanted state of the device, the spacer is positioned between two neighboring bone anchors, thereby impeding the motion of the bone anchors toward each other; the cord is clamped to the bone anchors, thereby impeding the motion of the bone anchors away from each other. By increasing or decreasing the tension in the cord during implantation, the physician can create a stabilization device that is either relatively stiff or relatively flexible to accommodate the specific needs of the patient.

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Patent Owner(s)

  • ZIMMER SPINE, INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dawson, John Chaska, US 51 1200

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