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Magnesium alloy implants with controlled degradation
US9333099B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9333099-B2 |
| Application number | US-201213436538-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2012 |
| Priority date | Mar 30, 2012 |
| Publication date | May 10, 2016 |
| Grant date | May 10, 2016 |
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- Title
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- Abstract
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Abstract
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Stents or scaffolds made from magnesium or magnesium alloys including additives or barrier coatings that modify the corrosion rate of the stent are disclosed. Methods of forming barrier coatings that modify the corrosion rate of the stent are disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. A stent comprising a scaffold composed entirely of a multiple phase alloy comprising a magnesium content of 30 to 80 wt % and a zinc content selected from the group consisting of 20 to 30 wt %, 30 to 40 wt %, 40 to 50 wt %, and 50 to 70 wt %. 2. The stent of claim 1 , wherein the stent further includes a polymer coating over the scaffold. 3. The stent of claim 1 , wherein the alloy comprises a magnesium content of 50 to 70 wt %. 4. The stent of claim 1 , wherein the alloy is nonporous. 5. The stent of claim 1 , wherein the alloy is porous. 6. The stent of claim 1 , wherein the alloy is drug-free. 7. The stent of claim 1 , wherein the zinc content is 20 to 30 wt %. 8. The stent of claim 1 , wherein the multiple phase alloy includes a phase composed of magnesium. 9. The stent of claim 1 , wherein the multiple phase alloy includes a phase composed of a magnesium alloy having up to 5 wt % of iron or zinc or 1 to 5 wt % of iron or zinc. 10. The stent of claim 1 , wherein the multiple phase alloy includes a phase composed completely of zinc or iron.
Assignees
Inventors
Classifications
by boring or cutting · CPC title
Treating the metal in the mould while it is molten or ductile (B22D7/12, B22D11/10, B22D43/00 take precedence); {Pressure or vacuum casting (B22D17/00 takes precedence)} · CPC title
of other specific inorganic materials not covered by A61L31/122 or A61L31/123 · CPC title
bioabsorbable · CPC title
Designing or manufacturing processes · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9333099B2 cover?
- Stents or scaffolds made from magnesium or magnesium alloys including additives or barrier coatings that modify the corrosion rate of the stent are disclosed. Methods of forming barrier coatings that modify the corrosion rate of the stent are disclosed.
- Who is the assignee on this patent?
- Pacetti Stephen D, Wang Yunbing, Ding Ni, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification A61F2/915. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 10 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).