SONG, LIN,LAWRYNOWICZ, DANIEL E.,LE, KIM-PHUONG NGUYEN,TENHUISEN, KEVOR SHANE
申请号：
CA2885076
公开号：
CA2885076A1
申请日:
2015.03.17
申请国别(地区):
CA
年份:
2015
代理人:
摘要：
A method for making an ultra-high weight polyethylene(UHMWPE) medical implant starts with obtaining a preformconsolidated from UHMWPE resin.Thereafter the preform is hotisostaticly pressed at a temperature between 150°C and 190°C ata pressure up to 30,000 psi.After the hot isostatic pressingthe preform is sequentially irradiated in a solid state at atotal radiation dose of 2 to 10 MRad.The irradiated UHMWPEpreform is then heated to a temperature of about 110°C to about190°C for between 2 to 10 hours.The irradiated and heatedpreform is then cooled after each irradiation and heating to ator below 50°C, and thereafter a medical implant is formed fromthe preform. Alternately, the process can be performed on themedical implant itself.
