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:
Nov. 19, 2013
Filed:
May. 13, 2008
Applicants:
Lorenz Brunner, Zurich, CH;
Yvo Dirix, Erlenbach, CH;
Hans Schmotzer, Zurich, CH;
Inventors:
Assignee:
Smith & Nephew Orthopaedics AG, Rotkreuz, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 23/06 (2006.01); C08G 18/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to highly cross-linked UHMWPE, which is possessed of an improved oxidation resistance, as well as a method for making the same. The UHMWPE material of the current invention is combined with an anti-oxidant compound or a free-radical scavenger prior to formation. Once the UHMWPE with the added material has been formed and treated with gamma or electron bean irradiation, it shows an improved wear resistance and also a good resistance to oxidation. Such a material, is particularly interesting for the field of making replacement joint implants.