Stent made by rotational molding or centrifugal casting and method for making the same
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United States of America Patent
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Jun 10, 2003
Grant Date -
N/A
app pub date -
Jul 31, 2000
filing date -
Jul 31, 2000
priority date (Note) -
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Abstract
The invention is directed to an expandable or self-expanding stent for implantation in a body lumen, such as an artery. The stent is made from a centrifugal casting process in which liquid casting material is placed within a female mold which includes an elongated cavity having a angular wall formed of grooves cooperating to form a predetermined stent configuration and rotating the female mold to distribute the casting material throughout the network of grooves. The stent can also be made from a rotational molding process in which dry cold powder resin is placed in a female mold and rotated at low speeds and heated to allow the charge of cold powder material to sinter to form the shape of the stent. The invention is also directed to the method for making such stents made from either centrifugal casting or rotational molding processes.
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