Multi-angular fastening apparatus and method for surgical bone screw/plate systems
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United States of America Patent
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Oct 18, 2005
Grant Date -
Apr 15, 2004
app pub date -
Oct 15, 2002
filing date -
Oct 15, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fastening apparatus includes a fastener and a fastener receiving member. The apparatus enables the fastener to be affixed to the fastener receiving member at a variable insertion angle selected by the user. The fastener includes an elongate section and an adjoining head section. Both the elongate section and the head section are threaded. The fastener receiving member includes one or more apertures through which one or more corresponding fasteners can be inserted. Each aperture includes a contact region formed or disposed on an inside surface defining the aperture. The contact region includes a porous matrix of protrusions or fiber metal having a density and strength sufficient to render contact region tappable by the thread of the head section of the fastener. The thread on the head section is driven into the contact region at the selected insertion angle. As a result, the thread of the head section taps into the material of the contact region such that the fastener is affixed to the fastener receiving member and maintained at the insertion angle.
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