Guidewire having hydrophilic coating
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United States of America Patent
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Nov 24, 1998
Grant Date -
N/A
app pub date -
Jun 21, 1996
filing date -
Jun 21, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A guidewire comprises a core wire having a coil tip at its distal end. The coil tip includes a helically wound filament having adjacent turns spaced apart by a preselected distance. The guidewire is coated with a polymeric material, typically a hydrophilic polysaccharide, such as hyaluronic acid or chondroitin sulfate. By properly selecting the spacing between adjacent turns of the coil tip, the hydrophilic coating will adhere to the coil tip in a manner which does not penetrate the coil and which does not significantly interfere with flexibility and bendability of the coil tip.
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