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US 4,898,591 AGranted
Nylon-PEBA copolymer catheter
AssigneeMallinckrodt Inc.
InventorsYue-Teh Jang, Vern L. Liebmann, Glenda S. Villman, Surendra A. Amin
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Abstract
Inner and outer layers of a braided body portion of an intravascular catheter as well as a soft tip portion are formed from different proportioned blends of nylon and copolymer of ester linked polyethylene and polyamide to produce optimum mechanical properties in the catheter. One or more surfaces of the catheter are coated with a hydrogel containing a copolymer of polyurethane and polyvinylpyrrolidone to provide improved lubricity and antithrombogenicity.
Claims18
An intravascular catheter comprising
- a tubular body formed with inner and outer polymer layers with a reinforcing braid layer formed between the inner and outer layers, and
- a soft flexible tubular tip formed from a polymer and having one end bonded to an end of the tubular body,
- said polymers of said inner and outer layers and said tip including a blend of nylon and a copolymer of ester linked polyethylene and polyamide.
An intravascular catheter comprising
- a tubular body formed from a polymer,
- a soft flexible tubular tip formed from a polymer and having one end bonded to an end of the tubular body,
- said polymers of said tubular body and said tip including a blend of nylon and a copolymer of ester linked polyethylene and polyamide, and
- a coating of lubricous hydrogel on at least one surface of the catheter.
1 more element
An intravascular catheter comprising
- a tubular body comprising inner and outer polymer layers with a reinforcing braid layer between the inner and outer layers, and
- a soft flexible tubular tip formed from a polymer and having one end attached to an end of the tubular body,
- said polymer of said inner and outer layers and said tip comprising a copolymer of ester linked polyethylene an polyamide.
Dependencies are inferred from the claim text.