The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Sep. 10, 2004
Michael Dierks, Wermelskirchen, DE;
Michael Dierks, Wermelskirchen, DE;
Signus Medizintechnik GmbH, Alzenau, DE;
Abstract
A bone screw is disclosed for attaching a spinal fixing element. The bone screw includes a threaded screw shank that can be fixed in place in a bone and a screw head having a fastening area for fastening a fastening device for the spinal fixing element. The fastening area includes a threaded section for fixing the fastening device in place. The screw head includes a recess differing from a threaded section. The recess has a longitudinal axis and allows for non-sliding accommodation of an extension of the fastening device laterally to the longitudinal axis of the recess. The extension of the fastening device engages the recess, the fastening device is rotatable about the longitudinal axis of the recess, and the threaded section extends in the longitudinal direction of the recess. The threaded section may be a hole and, together with the recess, a stepped hole.