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Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
专利权人:
Roger P. Jackson
发明人:
Roger P. Jackson
申请号:
US12229207
公开号:
US08353932B2
申请日:
2008.08.20
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with planar surfaces for closely receiving an elongate connecting member with planar surfaces and a one-piece closure structure. The connecting member is made from a polymer. The closure structure engages both the connecting member and the insert with the engagement between the closure structure and the insert securely locking the polyaxial mechanism even if the connecting member exhibits creep.
来源网站:
中国工程科技知识中心
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