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    • 72. 发明授权
    • Balloons for medical catheters
    • 医用导管气球
    • US5849846A
    • 1998-12-15
    • US476101
    • 1995-06-06
    • Ziyun ChenTai C. ChengJeong S. LeeKetan P. MuniUdayan PatelRobert P. Saltman
    • Ziyun ChenTai C. ChengJeong S. LeeKetan P. MuniUdayan PatelRobert P. Saltman
    • A61L29/00A61L29/04A61M25/00A61M25/16C08L23/02C08L67/00C08L67/02C08L77/00A61M25/10A61M29/02
    • A61L29/049A61M25/1029C08L67/02A61M2025/1031A61M25/0009
    • A catheter and/or balloon for a medical catheter is formed from a blend of polymeric components, including a first crystalline polymeric component and a second softening polymeric component. The polymeric material can also include a third compatibilizing agent to facilitate blending the first two polymeric components together. The first polymeric component can be a polyester or a polyamide, and the second polymeric component can be a polyolefin, or an ethylene copolymer. The third polymeric component is preferably an ethylene copolymer containing a reactive group that forms a covalent bond with the first polymeric component. The polymeric material forming the balloon or catheter also can include a catalyst to catalyze a reaction between the compatibilizing ethylene copolymer and the second polymer component. The second, softening polymeric component can also include a silane coupling agent, to provide a reactive softening copolymer that bonds with the first strong polymeric component, to provide increased flexibility of catheters and balloons formed from the polymeric components. The properties of the balloon and catheter formed from the polymeric material can be enhanced by crosslinking by irradiation of the polymeric material.
    • 用于医疗导管的导管和/或气囊由聚合物组分的混合物形成,包括第一结晶聚合物组分和第二软化聚合物组分。 聚合物材料还可以包括第三相容剂以便于将前两个聚合物组分共混在一起。 第一聚合物组分可以是聚酯或聚酰胺,第二聚合物组分可以是聚烯烃或乙烯共聚物。 第三聚合物组分优选是含有与第一聚合物组分形成共价键的反应性基团的乙烯共聚物。 形成气囊或导管的聚合物材料还可以包括催化剂,以催化相容性乙烯共聚物和第二聚合物组分之间的反应。 第二软化聚合物组分还可以包括硅烷偶联剂,以提供与第一强聚合物组分键合的反应性软化共聚物,以提供由聚合物组分形成的导管和气囊的增加的柔性。 由聚合物材料形成的球囊和导管的性质可以通过聚合材料的照射交联来增强。