Laminate catheter balloons with additive burst strength and meth

Details Laminate catheter balloons with additive burst strength and meth Laminate catheter balloons with additive burst strength and meth

1996-03-06

2000-09-26

Dye, Rena L.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 3691, 428910, 604 96, 604192, 604194, 606192, 264512, 264515, A61M 2902, B29C 4516

Patent

active

061240079

ABSTRACT:
A laminate balloon comprising at least two layers of separately oriented thermoplastic polymer material, which are coextensive over the body of the balloon. The two layers may be made of different polymer materials, including an underlying layer made of a low compliant, high strength polymer, such as PET, and an overlying layer of a softer and more flexible polymer material relative to the first polymer material, such as a polyester-polyether block copolymer. The balloon structures have an additive burst pressure, meaning that they are stronger than a single-layer reference balloon corresponding to the underlying polymer layer. The balloons are characterized by a combination of flexibility and surface softness which allows catheters to track down into lesions relatively easily, puncture resistance, abrasion resistance and refoldability, in addition to low compliance and high burst strength. The balloons may be prepared with generally linear or with stepped compliance profiles. Methods of preparation of such balloons are also disclosed.

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