Endoprosthesis comprising a magnesium alloy

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An endoprosthesis, in particular an intraluminal endoprosthesis such as a stent, comprises a carrier structure, which includes at least one component comprising a magnesium alloy of the following composition : Magnesium : between about 60.0 and about 88.0% by weight Rare earth metals : between about 2.0 and about 30.0% by weight Yttrium : between about 2.0% and about 20.0% by weight Zirconium : between about 0.5% and about 5.0% by weight Balance : between 0 and about 10.0% by weight wherein the alloy components add up to 100% by weight.