Endoprosthesis comprising a magnesium alloy
AssigneeBiotronik Vi Patent AG
InventorsClaus Harder, Marc Kuttler, Bodo Gerold, Heinz Mueller
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Abstract
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: Rare earth metals: between about 2.0 and about 5.0% by weight, with neodymium between about 1.5 and about 3.0% by weight Yttrium: between about 3.5% and about 4.5% by weight Zirconium: between about 0.3% and about 1.0% by weight Balance: between 0 and about 0.5% by weight wherein magnesium occupies the proportion by weight that remains to 100% by weight in the alloy.
Claims20
An endoprosthesis comprising a carrier structure which includes at least one component comprising a magnesium alloy of the following composition:
- Rare earth metals:
- between about 2.0 and about 5.0% by weight, with neodymium between about 1.5 and about 3.0% by weight
- yttrium:
- between about 3.5% and about 4.5% by weight
- zirconium:
- between about 0.3% and about 1.0% by weight
- balance:
- between 0 and about 0.5% by weight
- wherein magnesium occupies the proportion by weight that remains to 100% by weight in the alloy:
A method of making an endoprosthesis, the method comprising extruding a magnesium alloy of the following composition:
- Rare earth metals:
- between about 2.0 and about 5.0% by weight, with neodymium between about 1.5 and about 3.0% by weight
- Yttrium:
- between about 3.5% and about 4.5% by weight
- Zirconium:
- between about 0.3% and about 1.0% by weight
- Balance:
- between 0 and about 0.5% by weight
- wherein magnesium occupies the proportion by weight that remains to 100% by weight in the alloy to form at least one component of the endoprosthesis.
Dependencies are inferred from the claim text.