Spinal plate assembly having locking mechanism
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United States of America Patent
Stats
-
Oct 29, 2019
Grant Date -
Jul 13, 2017
app pub date -
Jan 12, 2016
filing date -
Jan 12, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spinal plate assembly comprising a base plate defining an opening adjacent at least one aperture for receiving a bone screw which attaches to a spinal vertebrae. The aperture includes a seat and an annular groove having an end wall. The assembly comprises a locking mechanism having a split ring partially recessed within the annular groove and moveable between a locked condition partially blocking the aperture for retaining the screw in the seat and an unlocked condition radially deformable into the annular groove for permitting screw removal. The split ring has a proximal end and a distal end. The distal end is configured to engage the end wall of the annular groove. The locking mechanism comprises a rotating member retained within the opening of the base plate and having a notch configured to engage the proximal end of the ring to drive the ring toward the unlocked condition.
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