E-MAX Highly Crosslinked Polyethylene скачать в хорошем качестве

E-MAX Highly Crosslinked Polyethylene

E-MAX is a step forward in the evolution of ultra-high molecular weight polyethylene for total joint bearing surfaces. ~Highly crosslinked : A proven strategy for reducing in vivo wear. ~Mechanically annealed : Eliminates* free radicals without the problems (such as reduced strength) associated with melt-annealing. ~Vitamin E blended: Provides excellent resistance to oxidation. https://kyocera-medical.com/2011/09/e... E-MAX Highly Crosslinked Polyethylene was developed to build on lessons learned from the first-generation of highly crosslinked polyethylenes (XLPE). The reduction in mechanical properties caused by melt-annealing is well-known. E-MAX is annealed using a proprietary mechanical compression process. This mechanical annealing removes* free radicals but does not diminish the mechanical properties of the polyethylene. Furthermore, recent retrieval studies of melt-annealed liners have revealed unexpected signs of in vivo oxidation. E-MAX contains 0.1%-weight vitamin E, which acts to scavenge free radicals, and is thus intended to hinder the polyethylene oxidation cascade. Laboratory tests have verified the superior oxidative stability and mechanical properties of E-MAX compared to melt-annealed XLPE. Wear tests of E-MAX devices up to 5 million cycles have demonstrated very low wear rates—comparable to the most highly crosslinked first-generation XLPEs. Thus, E-MAX represents a step forward in the evolution of polyethylene, providing wear resistance, oxidative stability, and improved mechanical properties. *Free radicals are eliminated to a level at or near the detection limit of ESR measurement equipment.