Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2006-03-16
2010-11-30
Barrett, Thomas C (Department: 3775)
Surgery
Instruments
Orthopedic instrumentation
C606S257000, C606S279000
Reexamination Certificate
active
07842072
ABSTRACT:
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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Barrett Thomas C
Crompton Seager & Tufte LLC
Yang Andrew
Zimmer Spine, Inc.
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