METHODS FOR MANUFACTURING RADIOPAQUE INTRALUMINAL STENTS COMPRISING COBALT-BASED ALLOYS WITH SUPERSATURATED TUNGSTEN CONTENT
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Oct 15, 2024
filing date -
Oct 15, 2024
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Abstract
Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium, tungsten, and nickel, and methods for their manufacture. Tungsten is present above its solubility limit (about 15%) at ambient temperature, but is still only present as a super-saturated, primarily single-phase material exhibiting an FCC microcrystalline structure.
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