Interlocking biomedical implant fastener and washer concepts
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United States of America Patent
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Aug 23, 2016
Grant Date -
Dec 4, 2014
app pub date -
Aug 18, 2014
filing date -
Oct 15, 2008
priority date (Note) -
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Abstract
Biomedical implant fastener systems, such as bone screw systems and the like. In some embodiments, a fastener may comprise a first plurality of teeth, and a washer configured to be received on the fastener may comprise a second plurality of teeth configured to be engaged with the first plurality of teeth. The first plurality of teeth may be configured to engage with the second plurality of teeth such that so as to allow for selective rotation between the washer and the fastener in a first rotational direction and so as to prevent rotation between the washer and the fastener in a second rotational direction opposite from the first rotational direction when the fastener is engaged with the washer such that second plurality of teeth is engaged with the first plurality of teeth so as to prevent the fastener from backing out of the washer after engagement.
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