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Polyaxial bone anchor with pop-on shank, shank, friction fit retainer, winged insert and low profile edge lock
专利权人:
James L. Surber;Roger P. Jackson
发明人:
Roger P. Jackson,James L. Surber
申请号:
US13573874
公开号:
US20130046350A1
申请日:
2012.10.10
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable compression insert, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.
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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