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Polyaxial bone anchoring device
专利权人:
BIEDERMANN TECHNOLOGIES GMBH & CO. KG
发明人:
Lutz Biedermann,Bernd Fischer
申请号:
US13914535
公开号:
US09498253B2
申请日:
2013.06.10
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A polyaxial bone anchoring device is provided comprising a bone anchoring element having a shank to be anchored in a bone and a head; a receiving part coupled to the shank and configured to pivotably receive the head, and having a channel for receiving a rod and a longitudinal axis; a pressure member configured to be positioned in the receiving part; a locking member insertable into the channel; wherein the pressure member has a deformable portion; and wherein, when the locking member is advanced into the channel in the direction of the longitudinal axis, the locking member in moveable from a position where it contacts the pressure member resulting in a load applied to the pressure member that clamps the head, to a position where the locking member contacts the pressure member such that the deformable portion is deformed and the locking member contacts the rod and clamps the rod.
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