Laminate catheter balloons with additive burst strength and methods for preparation of same
    8.
    发明授权
    Laminate catheter balloons with additive burst strength and methods for preparation of same 有权
    层叠导管气球,具有添加爆破强度及其制备方法

    公开(公告)号:US06328925B1

    公开(公告)日:2001-12-11

    申请号:US09670074

    申请日:2000-09-26

    IPC分类号: B29C4700

    摘要: 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.

    摘要翻译: 包括至少两层单独取向的热塑性聚合物材料的叠层气囊,其在气囊的主体上共同延伸。 两层可以由不同的聚合物材料制成,包括由低顺应性高强度聚合物(例如PET)制成的下层,以及相对于第一聚合物材料的较软和更柔性的聚合物材料的上层,例如 聚酯 - 聚醚嵌段共聚物。 气球结构具有附加爆破压力,这意味着它们比对应于下面的聚合物层的单层参考气球更强。 气囊的特征在于灵活性和表面柔软性的组合,除了低顺应性和高爆裂强度之外,还允许导管相对容易地追踪到损伤,抗穿刺性,耐磨性和再折叠性。 气囊可以以大致线性或阶梯式顺应性曲线制备。 还公开了制备这种气球的方法。