SURFACE CROSSLINKED POLYETHYLENE

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 rad...

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Bibliographic Details
Main Authors ZHANG ZONGTAO, HE SHULIN, YAU SHI-SHEN, HANSON KEENAN MICHAEL
Format Patent
LanguageEnglish
Published 31.12.2015
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES
CHEMISTRY
COMPOSITIONS BASED THEREON
DISINFECTION, STERILISATION, OR DEODORISATION OF AIR
GENERAL PROCESSES OF COMPOUNDING
HUMAN NECESSITIES
HYGIENE
MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES
MEDICAL OR VETERINARY SCIENCE
METALLURGY
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary: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.
Bibliography:Application Number: US201514851790