Patent ID: 11970600
Assignee: THE GENERAL HOSPITAL CORPORATION
Field: Medical technology (Instruments)
Classification: CPC C  A | IPC A  C

Claim 0:
1. A peroxide cross-linked and high temperature melted polymeric material fabricated from peroxide crosslinked ultra-high molecular weight polyethylene containing vitamin-E, wherein ultra-high molecular weight polyethylene is first blended with di-cumyl peroxide and vitamin E to form a blend, wherein said blend is compression molded to obtain a crosslinked and consolidated article and cooled to about room temperature, wherein the crosslinked and consolidated article is then subjected to a high temperature melting (HTM) cycle in a reduced oxygen environment to produce a peroxide cross-linked and high temperature melted polymeric material, wherein the peroxide cross-linked and high temperature melted polymeric material has an acetophenone (ACP) index less than 0.03 and an elongation at break (EAB) less than 400%,
wherein the high temperature melting cycle comprises
heating the crosslinked and consolidated article above 250° C. for at least 50 hours and less than 70 hours, wherein during the heating the crosslinked and consolidated article is heated at 295±5° C. for a duration that is not longer than 9 hours.