Patent ID: 8382824
Filing Date: 2013-02-26
Classification: A61L

Abstract:
1. An endoprosthesis comprising: a body comprising a plurality of interconnected struts, the body comprising a bioerodible metal, and at least a first strut of the plurality of interconnected struts including a stripe on the surface of the first strut, the stripe comprising a nitride of the bioerodible metal, a fluoride of the bioerodible metal, or a combination thereof, the stripe running along the length of the first strut, the stripe having a width less than a width of the first strut and being bordered by non-nitrided-nor-fluorided regions of the strut, the stripe being part of a continuous network of stripes on struts adjacent to the first strut, wherein the bioerodible metal of the body has nano-crystal grains and a plurality of corrosion barrier layers in or between the nano-crystal grains throughout the body, the corrosion barrier layers comprising a metal nitride, a metal fluoride, or a combination thereof.