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    Reinforced catheter with a formable distal tip
    4.
    发明授权
    Reinforced catheter with a formable distal tip 失效
    具有可成形远端的加强导管

    公开(公告)号：US6159187A

    公开(公告)日：2000-12-12

    申请号：US761659

    申请日：1996-12-06

    申请人： Peter K. Park ,  Henry Nita

    发明人： Peter K. Park ,  Henry Nita

    IPC分类号： A61L29/14 ,  A61M25/00 ,  A61M5/00

    CPC分类号： A61M25/0041 ,  A61L29/14 ,  A61M25/0052 ,  A61M2205/0266

    摘要： This is a section of a catheter which self-forms a selected shape upon application of a modest amount of heat and retains that shape upon cooling and, indeed, upon any reheating. The catheter section includes in its wall a forming member which typically comprises a super-elastic alloy oven braid or at least one coil. The forming member may include other materials and components in addition to the super-elastic element of the forming member. The forming member is typically covered by at least an outer polymeric covering which holds the forming member in a first shape prior to the heating step. Upon softening of the outer layer during that heating step, the forming member self-forms into the desired second shape. The catheter section may be used either in its first shape or its second shape or in any transitional shape between the two. Often the inner lumen of the forming member may contain a second polymeric tubing member. The inner polymeric tubing member is often lubricious. The catheter sections made according to this invention may be used alone or in conjunction with other catheter sections. The more proximal sections of a catheter assembly using this concept are often substantially stiffer.

    摘要翻译： 这是导管的一部分，其在施加适量的热量时自我形成选定的形状，并且在冷却时，实际上在任何再加热时保持该形状。 导管部分在其壁上包括通常包括超弹性合金烤箱编织物或至少一个线圈的成形构件。 除了成形构件的超弹性元件之外，成形构件可以包括其它材料和部件。 成形构件通常被至少一个外部聚合物覆盖物覆盖，其在加热步骤之前将成形构件保持在第一形状。 在该加热步骤期间软化外层时，成形构件自身形成所需的第二形状。 导管部分可以以其第一形状或其第二形状或两者之间的任何过渡形状使用。 通常，成形构件的内腔可以包含第二聚合物管构件。 内聚合物管件通常是润滑的。 根据本发明制造的导管部分可以单独使用或与其它导管部分结合使用。 使用该概念的导管组件的近侧部分通常基本上更硬。