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VIS PÉDICULAIRE POLYAXIALE
专利权人:
ZIMMER SPINE; INC.
发明人:
申请号:
EP11758601.6
公开号:
EP2611373B1
申请日:
2011.08.29
申请国别(地区):
EP
年份:
2015
代理人:
摘要:
A polyaxial bone anchor including a housing, a bone screw, and a retainer for pivotably coupling the head of the bone screw to the housing. The retainer is positioned into the bore of the housing and includes a plurality of alternating tabs and slots circumferentially arranged to define a cavity for receiving the head portion of the bone screw therein. The retainer is axially moveable in the housing from a first position in which the head portion is not passable through the lower opening of the retainer to a second position in which the head portion is passable through the lower opening of the retainer.
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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