Guide wire with hydrophilically coated tip
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United States of America Patent
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Oct 3, 2006
Issued Date -
N/A
app pub date -
Oct 7, 2003
filing date -
Mar 6, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A guide wire including a lubricous distal portion and a less lubricous intermediate portion proximal of said distal portion. One guide wire provides a highly lubricous distal portion with a hydrophilic layer and a less lubricous intermediate portion with a hydrophobic layer. Another guide wire provides a lubricous distal portion with a polymer tip that is itself hydrophilic. Yet another guide wire provides a less lubricous intermediate portion using a stainless steel coil helically wound around the tapering intermediate portion. The coil is preferably coated with a hydrophobic coating such as PTFE or silicone. The coil can either abut the distal portion proximal end or extend into the distal portion interior.
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