Implant for non-luminal area
AssigneeJapan Medical Device Technology Co., Ltd.
InventorsShuzo Yamashita, Makoto Sasaki, Akira Wada
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Abstract
A bioabsorbable implant for non-luminal region comprising: a core structure including a magnesium alloy having a predetermined shape; a first corrosion-resistant layer containing a magnesium fluoride layer as a main component formed on the core structure via fluorination of a surface of the magnesium alloy; and a second corrosion-resistant layer containing a parylene formed on the magnesium fluoride layer.
Claims10
A bioabsorbable implant for non-luminal region comprising:
- a core structure comprising a magnesium alloy having a predetermined shape, the magnesium alloy comprising, in % by mass,
- from 0.95 to 2.00% of zinc,
- from 0.05% to less than 0.30% of zirconium,
- from 0.05 to 0.20% of manganese, and
- the balance consisting of magnesium and unavoidable impurities,
- wherein the magnesium alloy is free from rare elements and aluminum, and
- wherein the total amount of unavoidable impurities being controlled to be 10 ppm or less;
- a first corrosion-resistant layer containing a magnesium fluoride layer as a main component formed on the core structure via fluorination of a surface of the magnesium alloy;
- and
- a second corrosion-resistant layer containing a parylene formed on the magnesium fluoride layer.
A method of producing a non-luminal implant comprising (1) a magnesium fluoride layer on a surface of a magnesium alloy and (2) a parylene layer on the magnesium fluoride layer, the magnesium alloy comprising, in % by mass,
- from 0.95 to 2.00% of zinc,
- from 0.05% to less than 0.30% of zirconium,
- from 0.05 to 0.20% of manganese, and
- the balance consisting of magnesium and unavoidable impurities,
- wherein the magnesium alloy is free from rare elements and aluminum, and
- wherein the total amount of unavoidable impurities being controlled to be 10 ppm or less,
- the method comprising:
- (1) subjecting a surface of a magnesium alloy having a predetermined shape to fluorination treatment to form a magnesium fluoride layer on the surface of the magnesium alloy, and
- (2) subjecting the magnesium fluoride layer vapor deposition coating of poly-para-xylylene resin to form a parylene layer.
Dependencies are inferred from the claim text.