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Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
专利权人:
Roger P Jackson
发明人:
Roger P Jackson
申请号:
US13068505
公开号:
US09144444B2
申请日:
2011.05.12
申请国别(地区):
US
年份:
2015
代理人:
摘要:
A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with surfaces for closely receiving an elongate connecting member and a dual closure structure that may include a single flange or helical flange. The dual closure structure independently engages the connecting member and the lower compression insert. A threaded capture connection of the bone anchor includes a shank upper surface exclusively engaging the lower compression insert and a retainer threadably attached to the shank and spaced from the upper surface, the retainer configured for polyaxial motion with respect to the receiver prior to locking.
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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