Catheters with fluoropolymer additives
First Claim
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1. A catheter comprising:
- an elongated tubular structure comprising;
a polymeric material;
an outer surface, a proximal end, a distal end, and a lumen, wherein said outer surface and said lumen extend between said proximal and distal ends; and
a wall thickness between said outer surface and said lumen, said wall thickness being at least 0.005 inches;
wherein said polymeric material comprises polyurethane and additives, said additives comprising 25-35 weight percent of a radiopaque material, 1.5-2.5 weight percent of a polymer comprising terminal polyfluoro-oligomeric groups, and a colorant.
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Abstract
The present invention provides catheter compositions that provide anti-thrombogenic properties while not adversely impacting mechanical properties. All embodiments of the present invention comprise a catheter that comprises a fluoropolymer additive with specific compositions and/or purity levels.
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Citations
8 Claims
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1. A catheter comprising:
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an elongated tubular structure comprising; a polymeric material; an outer surface, a proximal end, a distal end, and a lumen, wherein said outer surface and said lumen extend between said proximal and distal ends; and a wall thickness between said outer surface and said lumen, said wall thickness being at least 0.005 inches; wherein said polymeric material comprises polyurethane and additives, said additives comprising 25-35 weight percent of a radiopaque material, 1.5-2.5 weight percent of a polymer comprising terminal polyfluoro-oligomeric groups, and a colorant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification