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    • 6. 发明授权
    • Manual actuator for a catheter system for treating a vascular occlusion
    • 用于治疗血管闭塞的导管系统的手动致动器
    • US5741270A
    • 1998-04-21
    • US808092
    • 1997-02-28
    • Gerald HansenE. Richard Hill, IIICharles Milo
    • Gerald HansenE. Richard Hill, IIICharles Milo
    • A61B17/00A61B17/22A61B17/28A61F11/00
    • A61B17/2909A61B17/32075A61B2017/00469A61B2017/2918
    • Disclosed herein is manual actuator for retracting and advancing a therapeutic working element of an intravascular catheter system via an actuation shaft or one or more pulling wires. The manual actuator includes a hollow cylindrical bracing member having an open proximal end and a distal end, and a hollow cylindrical retracting member, the retracting member being slidable, in a telescoping fashion, into the open proximal end of the bracing member. An actuation shaft is secured near to the proximal end of the retracting member and the distal end of the actuation shaft is secured to the therapeutic working element. Alternatively, at least one pulling wire is secured proximal to the proximal end of the retracting member. The distal end of the pulling wire is secured to the therapeutic working element. At least one resilient connecting member has a proximal end attached proximate the proximal end of the retracting member, and a distal end attached proximate the distal end of the bracing member. When a manually applied external force is applied by the physician to the resilient connecting members, the resilient connecting members urge the retracting member in a proximal direction with respect to the bracing member, and retracting the actuation shaft to thereby operate the working element of the catheter system. Alternatively, the retracting member is urged in the proximal direction by the manually applied external force and the pulling wires transmit this force to the therapeutic working element.
    • 这里公开了用于通过致动轴或一个或多个牵引线回缩和推进血管内导管系统的治疗工作元件的手动致动器。 手动致动器包括具有开口近端和远端的中空圆柱形支撑构件和中空圆柱形缩回构件,缩回构件可以伸缩方式滑动到支撑构件的开放近端中。 致动轴固定在靠近收缩构件的近端并且致动轴的远端固定到治疗工作元件。 或者,至少一个拉线被固定在靠近收缩构件的近端的位置。 拉线的远端固定在治疗工作元件上。 至少一个弹性连接构件具有靠近缩回构件的近端附近的近端,以及靠近支撑构件的远端附近的远端。 当医师将手动施加的外力施加到弹性连接构件时,弹性连接构件相对于支撑构件在近端方向上推动缩回构件,并且使致动轴缩回从而操作导管的工作元件 系统。 或者,缩回构件通过手动施加的外力在近端方向被推压,并且牵引线将该力传递到治疗工作元件。
    • 8. 发明授权
    • Optical encoder for catheter device
    • 用于导管装置的光学编码器
    • US5427107A
    • 1995-06-27
    • US163248
    • 1993-12-07
    • Charles MiloGerald L. Hansen
    • Charles MiloGerald L. Hansen
    • A61B8/12
    • A61B8/12A61B8/445A61B8/4461
    • Disclosed herein is a catheter apparatus which supports high resolution imaging of the interior of a biological conduit. The apparatus includes an imaging atherectomy catheter of the type having a cutter housing attached to the distal end of a catheter. A tissue cutting member and an ultrasonic imaging transducer are disposed within the housing and are secured to the distal end of a rotatable torque cable. An elongated aperture formed along one side of the housing allows ultrasonic imaging and the intrusion of stenotic material which is removed by axially rotating and translating the cutting member. A miniature rotary encoder is slidably coupled to the end of the torque cable within the housing for precisely determining the rotational orientation of the ultrasonic imaging transducer with respect to the elongated aperture. The rotary encoder is read optically via a fiber optical cable which extends through the catheter. Placement of the rotary encoder at the imaging transducer overcomes distortions resulting from instantaneous speed variations between the two ends of the torque cable. The accurate rotational information permits use of ultrasonic imaging transducers having resolution better than 100 microns without significant image distortion.
    • 本文公开了一种支持生物导管内部的高分辨率成像的导管装置。 该装置包括具有连接到导管的远端的切割器壳体的类型的成像粥样斑块切除术导管。 组织切割构件和超声波成像换能器设置在壳体内并且固定到可旋转扭矩电缆的远端。 沿着壳体的一侧形成的细长孔允许超声成像和通过轴向旋转和平移切割构件而移除的狭窄材料的侵入。 微型旋转编码器可滑动地联接到壳体内的转矩电缆的端部,用于精确地确定超声波成像换能器相对于细长孔的旋转取向。 旋转编码器通过延伸穿过导管的光纤光缆光学读取。 旋转编码器在成像传感器处的放置克服了扭矩电缆两端之间的瞬时速度变化引起的扭曲。 精确的旋转信息允许使用具有优于100微米的分辨率的超声成像换能器,而没有显着的图像失真。