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Title:
BONE ANCHOR SYSTEM
Document Type and Number:
WIPO Patent Application WO2005020824
Kind Code:
A3
Abstract:
A bone anchor (10) includes a screw portion (12) configured to penetrate a bone. The screw portion includes a retention thread (18) extending at least part of a length of the screw portion and a tip (22) at a first end of the screw portion. The bone anchor includes a protrusion (24) adjacent a second end of the screw portion. The second end is opposite the first end of the screw portion. The protrusion comprises a plurality of external sides forming a shape and a rounded interior surface (30) enclosing a protrusion recess (26). The rounded interior surface includes a recess thread (31) configured to retain a component at least partially in the protrusion recess. The protrusion has a maximum width that is less than a maximum diameter of the screw portion such that a shoulder is formed where the protrusion meets the second end of the screw portion.

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Inventors:
AHMAD SHAHER A (US)
Application Number:
PCT/US2004/027010
Publication Date:
June 09, 2005
Filing Date:
August 19, 2004
Export Citation:
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Assignee:
OSTEOMED LP (US)
AHMAD SHAHER A (US)
International Classes:
A61B17/88; A61B17/86; A61B19/00; (IPC1-7): A61B17/04; A61C8/00; A61B17/86
Domestic Patent References:
WO1999039653A11999-08-12
Foreign References:
EP0705574A21996-04-10
US5417692A1995-05-23
US5601429A1997-02-11
US6327491B12001-12-04
US6139565A2000-10-31
US4938768A1990-07-03
US5643320A1997-07-01
US5662683A1997-09-02
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