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POLYAXIAL BONE ANCHORING DEVICE AND SYSTEM INCLUDING AN INSTRUMENT AND A POLYAXIAL BONE ANCHORING DEVICE
专利权人:
BIEDERMANN TECHNOLOGIES GMBH &; CO. KG
发明人:
Lutz Biedermann,Timo Biedermann,Bernd Fischer
申请号:
US16287896
公开号:
US20190274737A1
申请日:
2019.02.27
申请国别(地区):
US
年份:
2019
代理人:
摘要:
A polyaxial bone anchoring device includes a receiving part with an upper member having a first end, a second end, and a recess at the first end for receiving a rod, and a lower member connectable around the second end of the upper member, and a pressure member positionable in the upper member to exert pressure on a head of a bone anchoring element. The lower member is movable from a first position where the head is pivotable, to a second position closer to the first end of the upper member where an angular position of the head is locked while the recess remains vacant or unobstructed. When the lower member is at the second position, at least part of the lower member is aligned axially with at least part of an end face at the second end of the upper member.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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