Core wire for a guide wire comprising a functionally graded alloy
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United States of America Patent
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Jul 12, 2005
Grant Date -
Apr 18, 2002
app pub date -
Oct 23, 2001
filing date -
Jun 26, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Guide wires and catheters made from a functionally graded alloy comprising 3-10 weight % Al and 5-20 weight % Mn, the balance being substantially Cu and inevitable impurities. The functionally graded alloy is produced by forming the copper-based alloy, maintaining it at a temperature of at least 500° C. and rapidly cooling it, and then subjecting the alloy to an aging treatment by a gradient temperature heater.
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