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    • 1. 发明授权
    • Embolic coils with offset helical and twisted helical shapes
    • 具有偏移螺旋和扭曲螺旋形状的栓塞线圈
    • US5639277A
    • 1997-06-17
    • US538557
    • 1995-09-29
    • Michael J. MariantGregory E. MirigianNga T. VanRoberto L. OrellanaChristopher G. M. Ken
    • Michael J. MariantGregory E. MirigianNga T. VanRoberto L. OrellanaChristopher G. M. Ken
    • A61M25/00A61B17/12A61F2/82A61L27/00F16F1/04A61M29/00
    • A61B17/1215A61B17/12022A61B17/12109A61B17/12145F16F1/04
    • This is a surgical device that, in particular, is for forming a vasoocclusion or embolism. Typically, it is a helically wound coil in which the helix is wound in such a way as to have multiple axially offset, longitudinal or focal axes. Another important facet of the invention is the presence of small diameter secondary coil windings adjacent large diameter coil windings. The device is sufficiently flexible and small that it may be delivered to a site within the vasculature of the human body using a pusher and a catheter. The device is generally linear when within the catheter but relaxes to form the multi-focal form after delivery from the distal end of the catheter lumen. Various mechanical connections may also be used to discharge the inventive coil from its pusher. Similarly, the coil may be attached to a pusher using a sacrificial joint, which sacrificial joint is dissolved by imposition of a small voltage within the human body. The device may be used alone or in conjunction with other coils or with a fibrous thrombotic attachments or the substrate to localize subsequent infusion of tissue adhesives, other particulate embolization devices, or chemotherapeutic agents in abnormal blood vessels and tissues.
    • 这是一种手术装置,特别是用于形成血栓栓塞或栓塞。 通常,它是螺旋缠绕的线圈,其中螺旋线被卷绕成具有多个轴向偏移的纵向或焦点轴线。 本发明的另一个重要方面是存在与大直径线圈绕组相邻的小直径次级线圈绕组。 该装置具有足够的柔性和小度,使得其可以使用推动器和导管将其输送到人体脉管系统内的部位。 该装置在导管内通常是线性的,但是在从导管腔的远端递送之后松弛以形成多焦点形式。 也可以使用各种机械连接来从其推动器排出本发明的线圈。 类似地,线圈可以使用牺牲接头附接到推动器,该牺牲接头通过在人体内施加小的电压而被溶解。 该装置可以单独使用或与其它线圈一起使用,或与纤维性血栓形成附着物或基质一起使用,以便将异常血管和组织中的组织粘合剂,其它颗粒栓塞装置或化学治疗剂的随后输注定位。