Shulin He,Zongtao Zhang,Keenan Michael Hanson,Shi-Shen Yau
申请号：
US12775789
公开号：
US09132209B2
申请日:
2010.05.07
申请国别(地区):
US
年份:
2015
代理人:
摘要：
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.
