Variable radiopacity guidewire with spaced highly radiopaque regions
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United States of America Patent
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-
Dec 29, 1992
Grant Date -
N/A
app pub date -
Dec 4, 1990
filing date -
Dec 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A guidewire for use in inserting diagnostic and therapeutic catheters. The guidewire has an initial uniform diameter segment that is coated with a polymerized silicone along a majority of its length. This core section tapers along a uniform portion to a second constant diameter segment surrounded by a flexible spring tip. The spring tip is banded to define portions that are highly radiopaque and portions that are much less radiopaque to X-radiation. This allows post angioplasty X-ray imaging of the blood vessel without removal of the guidewire.
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