Polymeric marker with high radiopacity for use in medical devices
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United States of America Patent
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-
Dec 4, 2007
Grant Date -
Mar 24, 2005
app pub date -
Sep 21, 2004
filing date -
Sep 22, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
High radiopacity is achieved in a polymeric marker by combining a polymeric resin, a powdered radiopaque agent having uniformly shaped particles of a specific particle size distribution and a wetting agent. The method to produce the marker calls for the blending and pelletization of these materials followed by extrusion onto support beading. The resulting supported tubing is subsequently cut to length with the beading still in place. After ejection of the beading remnant the marker is slipped into place on the device to be marked and attached by melt bonding. Marking of a guidewire allows lesions to be measured while the marking of balloon catheters allow the balloon to be properly positioned relative to a lesion.
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