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    • 1. 发明授权
    • Deflectable catheter with ergonomic handle
    • 具有人体工程学手柄的可折叠导管
    • US06203507B1
    • 2001-03-20
    • US09262136
    • 1999-03-03
    • John F. WadsworthJ. Kevin ClayStanley H. WadaEdward V. Cruz
    • John F. WadsworthJ. Kevin ClayStanley H. WadaEdward V. Cruz
    • A61B500
    • A61M25/0147A61B5/042A61B18/1492A61M25/0136A61M2025/015
    • A deflectable catheter comprises a catheter body, a tip section and a control handle. The Control handle, which is preferably curved, comprises a housing having a generally hollow interior, a piston receiving assembly at least partially within the interior of the housing, and a piston. The piston receiving assembly is afforded rotational movement but not longitudinal movement relative to the housing and comprises a generally tubular member defining a piston chamber. The piston is fixedly attached to the proximal end of the catheter body and extends into the piston chamber of the piston receiving assembly, wherein the piston is afforded longitudinal movement but not rotational movement relative to the piston receiving assembly. Rotation of the piston relative to the housing correspondingly rotates the piston receiving assembly, catheter body and tip section. A puller wire extends from the control handle, through a lumen in the catheter body and into a lumen in the tip section. The proximal end of the puller wire is anchored in the control handle, whereby distal movement of the piston relative to the piston receiving assembly results in distal movement of the catheter body relative to the puller wire. The puller wire is anchored in the tip section so that to distal movement of the catheter body relative to the puller wire deflects the tip section.
    • 可挠性导管包括导管主体,尖端部分和控制手柄。 优选弯曲的控制手柄包括具有大致中空的内部的壳体,至少部分地在壳体内部的活塞接收组件和活塞。 活塞接收组件相对于壳体提供旋转运动而不是纵向运动,并且包括限定活塞室的大致管状构件。 活塞固定地附接到导管主体的近端并延伸到活塞接收组件的活塞室中,其中活塞被提供纵向运动,但不是相对于活塞接收组件的旋转运动。 活塞相对于壳体的旋转相应地使活塞接收组件,导管主体和尖端部分旋转。 拉线从控制手柄延伸通过导管主体中的内腔并进入尖端部分的内腔。 牵引线的近端锚定在控制手柄中,由此活塞相对于活塞接收组件的远端运动导致导管主体相对于拉线的远端移动。 牵引线锚定在尖端部分中,使得导管主体相对于牵引线的远端运动使尖端部分偏转。