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METHOD OF INSTALLING SELF-DRILLING, SELF-TAPPING BONE SCREW FOR BICORTICAL PURCHASE
专利权人:
Nicholas Poulos
发明人:
Nicholas Poulos
申请号:
US16717924
公开号:
US20200179022A1
申请日:
2019.12.17
申请国别(地区):
US
年份:
2020
代理人:
摘要:
A self-drilling, self-tapping bone screw is described in which the bone screw has a drill tip free of threads and having a length at least as great as about the thickness of a proximal cortical bone layer, with the drill tip having opposed lands and a helical flute between each of the lands with each of the lands having a cutting edge configured to cut bone as the drill tip is rotated into the bone with the flutes conveying the bone debris away from the drill tip, where a lead thread begins to self-tap internal threads in the proximal cortical bone layer after the drill tip has drilled through the proximal cortical bone layer so as to avoid stripping the threads formed in the bone layer. A method of installation is also disclosed.
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