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    • 7. 发明申请
    • HIGH COMPLIANCE, HIGH STRENGTH CATHETER BALLOONS USEFUL FOR TREATMENT OF GASTROINTESTINAL LESIONS
    • 高度合格,高强度导管血管可用于治疗胃肠功能不全
    • WO1998003218A1
    • 1998-01-29
    • PCT/US1997012074
    • 1997-07-11
    • SCIMED LIFE SYSTEMS, INC.
    • SCIMED LIFE SYSTEMS, INC.WANG, LixiaoFOURNIER, Donald, J.
    • A61M25/00
    • A61M25/1029
    • Balloon especially useful for dilatation of gastrointestinal lesions has a burst pressure of at least 9 atmospheres, a diameter at 3 atmospheres of about 5 mm or more, and an average compliance over the range of from 3 atmospheres to burst of at least 3 % per atmosphere. Such balloons and balloons having other combinations of burst strength, compliance and diameter may be prepared by a method wherein a tubing of a thermoplastic polymer material is radially expanded under a first elevated pressure at an elevated temperature to form the balloon at a first diameter and then annealing the balloon at a second elevated temperature and a second pressure less than the first elevated pressure for a time sufficient to shrink the formed balloon to a second diameter less than the first diameter. The thermoplastic polymer material may be a block copolymer material. Catheters bearing balloons prepared by this method have low withdrawal force requirements, especially catheters used in through-the-scope applications.
    • 特别可用于胃肠道损伤扩张的气球具有至少9个大气压的爆破压力,3个大气压的大约5mm或更大的直径,并且在每个大气压3个大气压至3个爆炸的范围内的平均柔量 。 具有爆裂强度,顺应性和直径的其它组合的这种气球和气囊可以通过一种方法制备,其中热塑性聚合物材料的管道在升高的温度下在第一升高的压力下径向扩张,以形成第一直径的球囊 在第二升高的温度和小于第一升高的压力的第二压力下退火球囊一段足以将形成的气囊收缩到小于第一直径的第二直径的时间。 热塑性聚合物材料可以是嵌段共聚物材料。 通过该方法制备的导尿管轴承气球具有较低的拉力需求,特别是在通过范围应用中使用的导管。