Implant with increased carbon content at near-surface boundary layer
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United States of America Patent
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Jul 5, 2016
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N/A
app pub date -
Jul 8, 2013
filing date -
Sep 28, 2009
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Abstract
Implant in the form of an intraluminal endoprosthesis, having a tubular body containing metallic material, optionally iron, whereby in at least a portion of the implant body the following are present in the structure of a near-surface boundary layer in comparison to the respective concentration in the remaining structure: an increased carbon content in a concentration of approximately 0.5% by weight to approximately 2% by weight; or an increased carbon and nitrogen content, wherein a concentration of carbon is approximately 0.5% by weight to approximately 7% by weight, and a concentration of nitrogen is approximately 0.5% by weight to approximately 17% by weight.
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