Patent ID: 8420000
Filing Date: 2013-04-16
Classification: A61L,C08F,C08J,C08K,C08L,Y10T

Abstract:
1. A method of making a cross-linked and interlocked hybrid material for a medical device or implant, wherein the method comprises: a) mixing a polymeric material with an antioxidant to form a polymeric blend; b) compression molding of the polymeric blend to the counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material; and c) irradiating the interlocked hybrid material by electron beam radiation at an elevated temperature that is between about 90° C. and below the melting point of the polymeric blend, thereby forming cross-links in the polymeric blend and yielding a cross-linked and interlocked hybrid material for a medical device or implant, wherein: (i) the cross-linking strengthens the polymeric blend to minimize separation at the interface, (ii) the antioxidant provides resistance to post-irradiation oxidation, and (iii) the irradiation sterilizes the interface.