Bone screw for use in orthopaedic surgery
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United States of America Patent
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Sep 27, 2005
Grant Date -
N/A
app pub date -
Apr 3, 2000
filing date -
Apr 8, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an improved bone screw for use in orthopaedic surgery, in particular with external fracture fixation devices, of the type which comprises ahead (3), a shank (4), and a threaded portion (5) tapering towards a tip (2) at the opposite end from the head (3). Advantageously, the threaded portion (5) has at least one constant pitch section comprising threads (9) which have a triangular cusp-like profile in cross section and are separated from each other by a shaped bottom land with a concave profile (10) defined by two countersloping planes.
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