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    • 32. 发明授权
    • Helically advanceable endoscopic needle device
    • 螺旋可推进内窥镜针装置
    • US06258064B1
    • 2001-07-10
    • US09411856
    • 1999-10-04
    • Kevin W. SmithJuergen A. KortenbachCharles R. Slater
    • Kevin W. SmithJuergen A. KortenbachCharles R. Slater
    • A61M5178
    • A61B17/3478A61B2017/00367A61B2090/034
    • An endoscopic needle device includes an outer sheath, an elongate shaft extending through the sheath, a needle rigidly attached to the distal end of the shaft, and a handle assembly having a housing coupled to the proximal end of the sheath and having a syringe port in fluid communication with the sheath and a knob rotatably coupled to the housing. Rotation of the knob relative to the housing causes rotation of the shaft relative to the sheath. The needle and the distal end of the sheath are mated by a threaded connection. As such, rotation of the knob relative to the housing causes precise longitudinal movement and extension of the needle relative to the distal end of the sheath. A set of intermeshing gears are provided between the knob and shaft which function to permit at most one rotation of the knob to cause complete extension and/or retraction of the needle. Furthermore, assemblies are provided with permit the shaft to accommodate movement of the needle relative to the sheath. Moreover, the position of the knob relative to the housing provides an indication of the extension of the needle. As such, the injection needle device of the invention permits controllable and calibrated rotation of the needle to within a few degrees, such that the needle device can be easily, reliably, and precisely operated to advance the needle.
    • 内窥镜针装置包括外护套,延伸穿过护套的细长轴,刚性地附接到轴的远端的针和手柄组件,其具有联接到护套的近端的壳体,并且具有注射器端口 与护套的流体连通和可旋转地联接到壳体的旋钮。 旋钮相对于壳体的旋转导致轴相对于护套的旋转。 针和鞘的远端通过螺纹连接配合。 因此,旋钮相对于壳体的旋转导致针相对于护套的远端的精确的纵向移动和延伸。 一组相互啮合的齿轮设置在旋钮和轴之间,其功能是允许旋钮的至多一个旋转引起针的完全伸展和/或缩回。 此外,组件被设置有允许轴以适应针相对于护套的运动。 此外,旋钮相对于壳体的位置提供针的延伸的指示。 因此,本发明的注射针装置允许可控和校准的针旋转到几度,使得针装置可以容易地,可靠地和精确地操作以推进针。