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US 8,709,073 B2Granted
Implant and method for production of the same
AssigneeBiotronik Vi Patent AG
InventorsBjoern Klocke, Ullrich Bayer
Life of this patent
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Abstract
One example embodiment of the present invention relates to an implant, particularly an intraluminal endoprosthesis, having a body that contains metallic material, preferably iron. The implant body has a first layer with at least one ionic compound that contains ions of at least one halogen, particularly chloride ions and/or bromide ions, on at least part of its surface. Furthermore, a method for the production of such an implant is described.
Claims20
An implant comprising:
- a body containing metallic material;
- a first degradation promoting layer on at least part of a surface of the body, with at least one ionic compound that contains ions of at least one halogen, the ions promoting the degradation of the body below the degradation promoting layer;
- and
- a magnesium stearate containing layer disposed at least on a part of the first degradation promoting layer.
1 more element
A method for the production of an implant comprising the following steps:
- a) coating at least a portion of the implant body with a first layer comprising at least one ionic compound that contains ions of at least one halogen;
- and
- b) coating a magnesium stearate-containing layer on at least a part of the first layer.
An intraluminal endoprosthesis implant comprising:
- a body comprising an iron alloy that contains at least 80% iron, the body having a surface;
- a corrosion promoting layer covering at least a portion of the body surface and comprising at least one ionic compound that contains at least one of chloride or bromide ions and further comprising earth alkali phosphates, the at least one chloride or bromide ions promoting corrosion of the body under the corrosion promoting layer;
- an adhesion promoting agent between the body surface and the corrosion promoting layer;
- a barrier layer which covers at least part of the first layer and forms a diffusion barrier that holds the at least one chloride or bromide ions in the vicinity of the body to enhance the corrosive effect of the ions;
- and
- a magnesium stearate containing layer disposed on at least a part of the barrier layer, the corrosion promoting layer, or both, the magnesium stearate containing layer optionally including one or more of parylene or a pharmaceutically active substance.
3 more elements
Dependencies are inferred from the claim text.