Braided angiography catheter having full length radiopacity and controlled flexibility
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United States of America Patent
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Jun 20, 2000
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N/A
app pub date -
Oct 3, 1997
filing date -
Oct 3, 1997
priority date (Note) -
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Abstract
A guiding catheter or angiographic catheter for use in cardiovascular interventions which incorporates a low-flexibility multi-layer proximal zone wherein a transition zone separates the proximal zone and a high flexibility distal zone. A mid-region zone transitions the high stiffness of the proximal zone to the higher flexibility of the distal zone to eliminate buckling and kinking. All zones of the catheter have a sufficiently large and substantially similar radiopacity, which allows the entirety of the catheter to be visible in a fluoroscope or other form of x-ray so that the positioning of the catheter can be precisely determined.
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