Pedicle screw implant system
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United States of America Patent
Stats
-
May 31, 2011
Grant Date -
Jun 3, 2010
app pub date -
Feb 4, 2010
filing date -
May 16, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pedicle screw fastening that can be made polyaxial, monoaxial, fixed, or provide a predefined monoaxial placement. The fastening system consists of an anchoring bone screw having threads on one end for use in anchoring to the screw to the spine and a spherical connector on the other end operating as a pivot point about which a U-shaped or side loading connecting assembly is used to secure to a connecting rod for use in stabilization of a spine. The connecting assembly, for receipt of a spinal connecting rod, includes a biased retainer ring for maintaining a positive tension between the connecting assembly and the anchored screw. The system allows for an improved manufacturing step wherein the threaded shank of a bone screws can be passed through a lower portion of the connecting assembly allowing a variety of bone screw sizes to be used with a common sized connector.
First Claim
Family
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Cited Art Landscape
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