Guidewire for catheter
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United States of America Patent
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-
Feb 1, 2000
Issued Date -
N/A
app pub date -
May 15, 1997
filing date -
Nov 6, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible intravascular guidewire comprises a plurality of filaments braided together and drawn through a die to a reduced cross-sectional area of circular shape. Preferably, one or more of the filaments is coated with a radiopaque material prior to drawing it through the dye. According to a preferred embodiment, each of the filaments is made from the same metallic material; alternatively, the filament material may differ, e.g., to provide flexibility and torsional stiffness characteristics which are unachievable in a metal monofilament, or in a multifilament wire of the same filament materials.
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