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POLYAXIAL BONE ANCHORING DEVICE WITH ENLARGED PIVOT ANGLE
专利权人:
Lutz Biedermann
发明人:
Lutz Biedermann,Martin Meer
申请号:
US13586454
公开号:
US20130096620A1
申请日:
2012.08.15
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A polyaxial bone anchoring device includes an anchoring element having a shank and a head, a receiving part having a first end and a second end, a central axis, and an accommodation space for accommodating the head, the accommodation space having an opening at the second end, a sleeve-like insert piece configured to be arranged around a portion of the head and to be arranged in and to pivot in the accommodation space, and a pressure member including a portion configured to exert pressure onto the head, wherein the anchoring element and insert piece are pivotable with respect to the receiving part such that respective angles formed by a central axis of the insert piece with the central axis of the receiving part and a central axis of the anchoring element are adjustable, and can be locked by exerting pressure with the pressure member onto the head.
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