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    • 13. 发明申请
    • Medical devices and methods for their fabrication and use
    • 医疗器械及其制造和使用方法
    • US20090082723A1
    • 2009-03-26
    • US12153444
    • 2008-09-08
    • Magnus KroghEdwin Jager
    • Magnus KroghEdwin Jager
    • A61M25/092
    • A61M25/0012A61B1/00078A61B2017/00831A61L29/14A61M25/0053A61M25/0054A61M25/0138A61M25/0158A61M25/09A61M2025/0058A61M2025/0063A61M2025/0915
    • An elongate device for introduction into a body lumen comprises a body extending in a longitudinal direction (L), and having at least two skeletal members (21, 21a, 21b, 24, 27a, 27b), which are substantially aligned in the longitudinal direction (L), and at least one electroactive polymer material (22), which changes volume upon electrical activation, arranged to control a distance between two longitudinally spaced-apart portions of said skeletal members (21, 21a, 21b, 24, 27a, 27b). The body presents an asymmetric bending stiffness, and/or the electroactive polymer material is asymmetrically arranged about a central axis of the device, such that the body is arranged to bend transversely of the longitudinal direction (L) upon activation of the electroactive polymer material. The electroactive polymer material (22) is form fit onto at least one of the skeletal members (21, 21a, 21b).There is further provided an elongate device for introduction into a body lumen, the elongate device having a controllable stiffness portion.Methods for fabricating and using the elongate devices are also provided.
    • 用于引入体腔的细长装置包括沿纵向方向(L)延伸的主体,并且具有至少两个骨架构件(21,21a,21b,24,27a,27b),所述至少两个骨架构件 (L)和至少一个在电活动时改变体积的电活性聚合物材料(22),其布置成控制所述骨架构件(21,21a,21b,24,27a,27b)的两个纵向间隔开的部分之间的距离 )。 主体呈现不对称的弯曲刚度,和/或电活性聚合物材料围绕装置的中心轴线不对称地布置,使得主体被布置成在激活电活性聚合物材料时横向于纵向方向(L)弯曲。 电活性聚合物材料(22)形成为配合在至少一个骨架构件(21,21a,21b)上。 还提供了用于引入体腔的细长装置,细长装置具有可控的刚度部分。 还提供了用于制造和使用细长装置的方法。