Radiopaque stent
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United States of America Patent
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Issued Date -
Dec 19, 2002
app pub date -
Mar 30, 2001
filing date -
Mar 30, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is directed towards a stent fabricated from an austenitic 300 series stainless steel alloy having improved radiopaque characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about1 C Mn Si P S .ltoreq.0.030 .ltoreq.2.000 .ltoreq.0.750 .ltoreq.0.023 .ltoreq.0.010 Cr Mo Ni Fe 'X' 12.000- 000- 10.000- 46.185- 2.000- 20.000 3 000 18.000 74.000 10.000 whereby variable 'X' could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, or Tungsten. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved radiopaque characteristics in the thin sections necessary to manufacture a stent and is low toxicity.
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