Catheters with high-purity fluoropolymer additives
First Claim
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1. A catheter comprising:
- an elongated tubular structure comprising a first polymer comprising polyurethane and a second polymer comprising polyfluoro-oligomeric groups;
wherein said second polymer is characterized by a polystyrene equivalent weight average molecular weight (Mw) greater than 13 kDa.
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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
20 Claims
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1. A catheter comprising:
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an elongated tubular structure comprising a first polymer comprising polyurethane and a second polymer comprising polyfluoro-oligomeric groups; wherein said second polymer is characterized by a polystyrene equivalent weight average molecular weight (Mw) greater than 13 kDa. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A catheter comprising:
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an elongated tubular structure comprising a polymeric material comprising; a first polymer comprising polyurethane; and additives comprising a second polymer comprising polyfluoro-oligomeric groups; wherein said second polymer is characterized by a polystyrene equivalent weight average molecular weight (Mw) greater than 13 kDa and a polydispersity index of between 1.0 and 2.0. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification