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BONE ANCHORING DEVICE
专利权人:
Lutz BIEDERMANN
发明人:
Lutz BIEDERMANN,Wilfried Matthis,Berthold Dannecker
申请号:
US13314085
公开号:
US20120172932A1
申请日:
2011.12.07
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A bone anchoring device includes a bone anchoring element including a shaft and a head, a receiving part for coupling a rod to the bone anchoring element, the receiving part including a rod receiving portion having a channel with a bottom for receiving a rod, and a head receiving portion to allow introduction and clamping of the head, and a locking ring including at least one projection, wherein the rod receiving portion has at least one cutout, wherein when the head is not locked, the projection is configured to extend through the cutout and into the channel, and wherein a first engagement portion is provided on the locking ring for engaging a second engagement portion at an inner wall of the cutout to hold the locking ring in a first position where the head is pivotable in the head receiving portion but is prevented from removal therefrom.
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中国工程科技知识中心
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