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:
May. 08, 2018
Filed:
Mar. 03, 2016
Applicant:
Biotronik Ag, Buelach, CH;
Inventors:
Assignee:
BIOTRONIK AG, , CH;
Primary Examiner:
Int. Cl.
CPC ...
A61B 17/86 (2006.01); A61L 31/02 (2006.01); A61L 31/14 (2006.01); A61B 17/56 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01);
U.S. Cl.
CPC ...
A61B 17/866 (2013.01); A61B 17/863 (2013.01); A61B 17/864 (2013.01); A61B 17/8635 (2013.01); A61L 31/022 (2013.01); A61L 31/14 (2013.01); A61L 31/148 (2013.01); A61B 17/1655 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/561 (2013.01); A61B 2017/8655 (2013.01); A61L 2430/02 (2013.01);
Abstract
A bone screw formed primarily of a magnesium alloy has a self-tapping thread, and is prestressed with a retained torsional stress oriented oppositely to the direction in which the screw is screwed into bone. The pre-stressing opposes the torsional stresses arising from screwing in the screw, thereby raising the effective strength of the screw and/or allowing for a reduction in its size/mass.