Bioabsorbable stent

A method for producing a bioabsorbable stent including a core structure comprising a magnesium alloy containing 90 wt % or more of magnesium as a main component, and zinc, zirconium, and manganese as accessary components, the magnesium alloy being free of any rare earth elements and aluminum, the method comprising:

• preparing the core structure comprising the magnesium alloy;
• electropolishing the core structure and performing fluorination to a surface of the electropolished core structure so as to form a first corrosion resistant layer containing magnesium fluoride as a main component;
• and
• vapor depositing a paraxylylene resin on the first corrosion resistant layer so as to form a second corrosion resistant layer comprising a parylene,
• wherein in the magnesium alloy, unavoidable impurities selected from the group consisting of Fe, Ni, Co, and Cu are contained in a total content of 30 ppm or less, and
• the magnesium alloy comprises 0.95 to 2.00 wt % of zinc, 0.05 to 0.80 wt % of zirconium, 0.05 to 0.40 wt % of manganese, and the balance consisting of magnesium and unavoidable impurities.