Dynamic compression device and driving tool
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United States of America Patent
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-
Feb 13, 2007
Grant Date -
Dec 15, 2005
app pub date -
Jun 15, 2004
filing date -
Jun 15, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A bone screw has a spring section to allow the screw to elongate while it is being installed. The screw has a cavity with a proximal drive surface and a distal drive surface. The drive surfaces are located on opposite sides of the spring section. A drive tool that has proximal and distal drive members fits within the cavity. Rotating the drive tool transmits torque to both the proximal and distal drive sockets simultaneously.
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