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    • 10. 发明授权
    • Variable curve catheter
    • 可变曲线导管
    • US07918819B2
    • 2011-04-05
    • US10534362
    • 2003-11-14
    • Parag KarmarkarRobert J. Lederman
    • Parag KarmarkarRobert J. Lederman
    • A61M31/00
    • A61M25/0147A61M25/0138A61M25/0144
    • Disclosed is a deflectable tip guiding device, such as a catheter, that enables a physician, or other health care personnel, to vary the radius of curvature of the tip of the device. In one embodiment, a guiding device includes an elongate body and a deflectable distal tip. An elongate stiffener tube is coupled to the body for longitudinal movement relative thereto and has a distal end spaced a variable distance from the distal end of the tip, thereby serving as a fulcrum for the tip. Longitudinal movement of the stiffener tube relative to the body varies the distance between the distal ends of the tip and tube, which in turn causes a corresponding increase or decrease in the radius of curvature of the tip.
    • 公开了一种可偏转的末梢引导装置,例如导管,其使得医师或其他保健人员能够改变装置的尖端的曲率半径。 在一个实施例中,引导装置包括细长主体和可偏转的远侧末端。 细长的加强管耦合到主体,用于相对于其纵向移动,并且具有与尖端的远端间隔开可变距离的远端,从而用作尖端的支点。 加强管相对于主体的纵向运动改变了尖端和管的远端之间的距离,这又导致尖端的曲率半径的相应增加或减小。