Resorbable Implant with high purity and good mechanical properties

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To develop stents in particular, the invention proposes a implant is made of a magnesium alloy having improved corrosion resistance (Y) before comprising 0-5% yttrium, in particular 0-4.5% 3.4-4.6% and/or neodymium and/or 0-4% (Li) Li- [...] (Nd), zinc (Zn) 2.6-3.4% and/or in particular 0-1.2%, in particular 0-1.2% (Ca) 0.45-0.85% and/or calcium, and/or 0-1.5% zirconium into the-special 0.45-0.85%, in particular 0.6-0.9%, as well as any combination of rare earths, in particular with the regulatory number 57 to 71 or 89 to 103, of a total of 0-0.2%, in particular 0.02%, worked out altogether 0 preferably, 005%, and a residual content of not more than 0.03%, worked [...] not more than 0, 013%, particularly preferably not more than 0, 005%, of impurities (Fe) consisting of any combination of the elements iron (Si) and/or silicon and/or manganese (Mn) and/or cobalt and/or nickel (Ni) (co) (cu) and/or aluminum and/or copper and/or zirconium (Zr) and (Al) (P)/ or phosphorus, which favour the formation of electrochemical potential differences and/or in combination intermetallic phases.