Self-deploying locking screw retention device
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United States of America Patent
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Oct 27, 2015
Issued Date -
N/A
app pub date -
Dec 13, 2012
filing date -
May 6, 2005
priority date (Note) -
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Abstract
A screw assembly and a spinal implant. The screw assembly includes a screw with a head and a shaft where a screw retention member is positioned beneath the head of the screw and substantially surrounds the shaft of the screw. The screw retention member is formed from a temperature-sensitive material. The screw retention member has a first contracted position adapted for inserting the screw through at least one hole in the spinal implant and a second expanded position adapted for retaining the screw within the at least one hole in the spinal implant. The screw retention member may be in the form of a coiled spring or a collar having a plurality of tabs.
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