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BONE SCREW THREADED ENLARGER
专利权人:
Zimmer Biomet Spine; Inc.
发明人:
Terry Ziemek,David W. Castleman
申请号:
US15663174
公开号:
US20180028245A1
申请日:
2017.07.28
申请国别(地区):
US
年份:
2018
代理人:
摘要:
A bone fastener system can comprise a fastener and a first sizing component. The fastener can comprise a shaft that provides an anchoring footprint. The first sizing component can be configured to be connected to the shaft and can include a first anchoring feature, or circumferential bone engaging feature, to increase a size of the anchoring footprint. The first anchoring feature can comprise a sleeve that radially expands a diameter of the threaded shaft. The first anchoring feature can comprise axially extending teeth. The system can further comprise a second sizing component including a second anchoring feature to increase the size of the anchoring footprint, the second anchoring feature being different from the first anchoring feature. The second anchoring feature can expand the diameter of the threaded shaft a greater amount than the first anchoring feature. The second anchoring feature can have a length greater than the first anchoring feature.
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