MAGNESIUM ALLOY IMPLANTS WITH CONTROLLED DEGRADATION

摘要

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.

主权项

1. A stent comprising:
a scaffold composed at least in part of a mixture of a magnesium alloy and a plurality of elemental calcium particles, wherein the plurality of elemental calcium particles are dispersed within the magnesium alloy, and wherein the elemental calcium particles have a size between 0.1 and 10 microns and are between 0.5 and 25 wt % of the mixture.