Orthopedic plate system and method for using the same
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United States of America Patent
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Apr 10, 2012
Grant Date -
Sep 7, 2006
app pub date -
Feb 17, 2006
filing date -
Feb 18, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An orthopedic bone fixation device for stabilizing a plurality of bone segments includes a bone plate and a screw assembly. The bone plate includes a body defining at least one thru-bore, wherein the thru-bore is defined to include a central cavity, the central cavity having a middle diameter, an entry diameter, and an exit diameter, the middle diameter being larger than both the entry diameter and the exit diameter. Further, the screw assembly is configured to be coupled to the bone plate, wherein the screw assembly includes a bone screw having a head section, a thread section, and a central bore, an expandable ring coupled to the head section, and a pin at least partially disposed in the central bore, wherein the pin includes a varying outer profile that engages the expandable ring to vary an outer diameter of the expandable ring to lock the screw assembly in the thru-bore.
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