Invention Grant
- Patent Title: Bone anchoring device
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Application No.: US15436246Application Date: 2017-02-17
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Publication No.: US10335204B2Publication Date: 2019-07-02
- Inventor: Wilfried Matthis , Martin Meer , Lutz Biedermann
- Applicant: Biedermann Technologies GmbH & Co. KG
- Applicant Address: DE Donaueschingen
- Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
- Current Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
- Current Assignee Address: DE Donaueschingen
- Agency: Lewis Roca Rothgerber Christie LLP
- Priority: EP12153154 20120130
- Main IPC: A61B17/70
- IPC: A61B17/70 ; A61B17/86 ; A61B17/00

Abstract:
A polyaxial bone anchoring device includes a bone anchoring element having a head and a shaft, a receiving part having a head receiving portion, a rod receiving portion, and a bore having a bore axis, and a pressure member movable in the bore and having a first surface for engaging the head, wherein the pressure member is movable to a first position where friction between the first surface and the head generates a preload on the head to maintain the shaft at a temporary angular position relative to the receiving part, and wherein the pressure member is configured to engage the receiving part to generate a holding force for holding the pressure member at the first position without a positive lock, and wherein the pressure member is movable in and out of the first position by applying an axial force on the pressure member greater than the holding force.
Public/Granted literature
- US20170224387A1 BONE ANCHORING DEVICE Public/Granted day:2017-08-10
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