Marc Yap,Rob D. Dickerman,Matthew T. Bennett,Charles R. Forton,Andrew R. Fauth,Joel R. Helgerson,Shresta Marigowda
申请号：
US13166638
公开号：
US08998966B2
申请日:
2011.06.22
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A screw system includes a screw and a washer assembly captive to the screw. The washer assembly is polyaxially pivotable relative to the screw. The screw may be freely rotated in one direction relative to the washer assembly, but frictionally binds with the washer assembly when rotated in a second direction. Various auxiliary fixation features are disclosed.
