Bidirectional rod-hook locking mechanism
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United States of America Patent
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-
Nov 4, 1997
Grant Date -
N/A
app pub date -
Dec 23, 1996
filing date -
Dec 23, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bidirectional rod locking mechanism for use with rod coupling elements of orthopaedic rod apparatus includes a rod coupling element having a hook-shaped rod receiving end and a threaded axial bore. The axial bore is disposed so close to the hook-shaped portion that the medial portion of the hole protrudes through the inner surface of the hook portion. A contoured threaded shaft is advanced into the bore such that the contoured medial portion thereof aligns with the inner surface of the hook to permit the receipt therein of a rod. The threadable translation of the shaft in the appropriate direction causes a misalignment of the contoured medial portion in a manner which prevents the rod from being removed from the hook-shaped receiving locus.
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