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:
Sep. 15, 2015
Filed:
May. 07, 2010
Shulin He, Montvale, NJ (US);
Zongtao Zhang, Riverdale, NJ (US);
Keenan Michael Hanson, Tuxedo, NY (US);
Shi-shen Yau, Berkeley Heights, NJ (US);
Shulin He, Montvale, NJ (US);
Zongtao Zhang, Riverdale, NJ (US);
Keenan Michael Hanson, Tuxedo, NY (US);
Shi-Shen Yau, Berkeley Heights, NJ (US);
Howmedia Osteonics Corp., Mahwah, NJ (US);
Abstract
A method for producing a wear resistant polyethylene medical implant includes forming a medical implant, such as an orthopedic implant, made at least partially of ultra high molecular weight polyethylene (UHMWPE). The polyethylene may be irradiated with gamma ray or e-beam radiation to form free radicals and then crosslinked to eliminate free radicals prior to exposure to oxygen. The so treated bearing surface of the crosslinked polyethylene is then coated with a photoinitiator. Thereafter the bearing material is photocrosslinked with ultra-violet (UV) radiation. The photocrosslinking process can also be applied to non-crosslink UHMWPE.