Bone fastening device
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United States of America Patent
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Aug 9, 1994
Issued Date -
N/A
app pub date -
Sep 17, 1992
filing date -
May 24, 1991
priority date (Note) -
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Abstract
A surgical bone screw having a head which has asymmetrical radii relative to the central axis of the screw. The cross-section of the head is configured as a lobular shape having a constant radii along one hemisphere of the head, and smaller radii along the opposing hemisphere of the head, with the smallest radius existing approximately perpendicular to the midline of the head member. The asymmetry of the head minimizes surface area of the screw protruding above the bone surface.
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