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.

Date of Patent:
Nov. 19, 2019

Filed:

Mar. 11, 2014
Applicant:

Depuy Synthes Products, Inc., Raynham, MA (US);

Inventors:

Thomas Imwinkelried, Oberdorf, CH;

Stefan Beck, Oberdorf, CH;

Peter Uggowitzer, Ottenbach, CH;

Joerg Loeffler, Greifensee, CH;

Assignee:

DePuy Synthes Products, Inc., Raynham, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F 1/06 (2006.01); A61L 31/02 (2006.01); C22C 23/04 (2006.01); A61L 27/04 (2006.01); A61L 27/58 (2006.01); A61L 31/14 (2006.01); A61B 17/84 (2006.01); A61F 2/44 (2006.01); A61F 2/82 (2013.01);
U.S. Cl.
CPC ...
A61L 31/022 (2013.01); A61B 17/84 (2013.01); A61F 2/44 (2013.01); A61F 2/82 (2013.01); A61L 27/047 (2013.01); A61L 27/58 (2013.01); A61L 31/148 (2013.01); C22C 23/04 (2013.01); C22F 1/06 (2013.01);
Abstract

An alloy and an implant having a three-dimensional structure based on such alloy. The alloy comprises a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy and having a Zn content ranging 0.1 wt. % Zn to 2 wt. % Zn and a calcium content ranging from 0.2 wt. % to 0.5 wt. %, and having one or more other elements, with the remainder being Mg. Any second phase generated during the solidification process may be completely dissolved by a solution heat treatment. Finely dispersed nanosized precipitates can then be generated by a subsequent aging heat treatment step. These precipitates are used to 'pin' the grain boundaries and to prevent the coarsening of the grain structure during further processing to achieve grain sizes below 5 μm.


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