Bone screw with improved threads
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United States of America Patent
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-
Feb 20, 1996
Issued Date -
N/A
app pub date -
Feb 24, 1994
filing date -
Nov 27, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bone screw having a helical thread with a constant outside diameter and curling around a tapered core. The fine screw tip and thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker core just below the screw head increases the screw's ability to withstand compressive and distractive loads. The core is thickest just below the head because it is at that point on the screw that the fulcrum loads are greatest.
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