Patent ID: 8915953

Claim:
A vascular implant made in total or in parts of a biodegradable magnesium alloy consisting essentially of: Y: from about 3.8% to about 4.0% by weight, Nd: from about 0.04% to about 0.07% by weight, Gd: 0 to about 2.8% by weight, Dy: 0 to about 2.57% by weight, Er: about 0.01% by weight, Zr: from about 0.46% to about 0.47% by weight; under the condition that: a) a total content of Er, Gd and Dy is about 2.58% to about 2.81% by weight, and b) a total content of Nd, Er, Gd and Dy is about 2.62% to about 2.88% by weight; the balance being magnesium and incidental impurities, optionally including Al or Li, up to a total of 0.3% by weight; wherein the area percentage of particles in the alloy having an average particle size in the range of 1 to 15 μm is less than 3%.