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    • 1. 发明申请
    • Process for Producing a Hyper-Elastic, High Strength Dilatation Balloon made from Multi-Block Copolymers
    • 用于生产由多嵌段共聚物制成的超弹性,高强度膨胀气球的方法
    • US20090140449A1
    • 2009-06-04
    • US12261090
    • 2008-10-30
    • Ashish VarmaKimberly A. ChaffinFrank BatesMarc HillmyerLisa LimTamotsu Harada
    • Ashish VarmaKimberly A. ChaffinFrank BatesMarc HillmyerLisa LimTamotsu Harada
    • B29C47/00
    • A61L29/04A61L29/049C08L53/00Y10T428/1352
    • A self-wrapping dilatation balloon comprising a multiblock copolymer having high elasticity and elastic recovery from nominal strains greater than about 30% is described. Also described herein, is a polymeric extrudate for making a dilatation balloon comprising a multiblock copolymer having tensile strength in the range of about 50 MPa to about 450 MPa, strain at break in the range of about 50% to about 600% and substantially complete elastic recovery from nominal strains of at least about 30%. The extrudate has phase-separated microdomains that are macroscopically aligned in parallel, perpendicular, transverse or a combination thereof. Also described herein is a process for producing a polymeric extrudate for use as a dilatation balloon. The process comprises extruding a multiblock copolymer mixture or composition to form an extrudate. The extruding is done such that the extrudate has phase-separated microdomains that are macroscopically aligned in parallel, perpendicular, transverse or a combination thereof. After extrusion, the process optionally comprises the steps of drawing and coagulating the extrudate.
    • 描述了包含具有高于约30%的标称应变的高弹性和弹性恢复的多嵌段共聚物的自包裹膨胀气球。 本文还描述了一种用于制造膨胀气囊的聚合物挤出物,其包含具有约50MPa至约450MPa范围内的拉伸强度,约50%至约600%范围内的拉伸应变和基本上完全弹性的多嵌段共聚物 从名义菌株中恢复至少约30%。 挤出物具有相分离的微区域,它们在宏观上对齐,平行,垂直,横向或其组合。 本文还描述了用于生产用作膨胀气球的聚合物挤出物的方法。 该方法包括挤出多嵌段共聚物混合物或组合物以形成挤出物。 进行挤出使得挤出物具有相互分离的微区域,其宏观地对准在平行,垂直,横向或其组合。 挤出后,该方法任选地包括拉伸和凝结挤出物的步骤。