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    • 12. 发明授权
    • Cleanable endoscopic surgical instrument
    • 可清洗内镜手术器械
    • US5342391A
    • 1994-08-30
    • US957336
    • 1992-10-06
    • David L. FosheeRobert S. Lynch
    • David L. FosheeRobert S. Lynch
    • A61B17/00A61B17/28A61B17/32
    • A61B17/29A61B17/2909A61B2017/0046
    • An endoscopic surgical instrument which is able to be disassembled in order to facilitate cleaning of the instrument or replacement of certain components. The instrument comprises a handle portion at the proximal end of an elongated rotatable shaft, the handle portion including a pair of handles biased into a normally open position and movable between the normally open position and a closed position. Movement of the handles within the normal range serves to axially move an elongated working element situated within the hollow interior of the elongated sleeve, the proximal end of the working element shaft having a stud adapted to be received within a stud recess in one of the handles. The stud recess has a front slotted wall and an open top end. A spring means is provided in order to bias the handles during normal operation and a latch means is provided in order to disengage the spring. When the spring is disengaged, the handles may be moved beyond their normal range of motion so they may be placed into a disassembly position in which the stud on the proximal end of the working element may be pulled distally from the stud recess in order to enable the working element to be removed from the instrument.
    • 一种能够拆卸以便于清洁仪器或更换某些部件的内窥镜手术器械。 仪器包括在细长可旋转轴的近端处的手柄部分,手柄部分包括一对手柄,其被偏压到常开位置并且可在常开位置和关闭位置之间移动。 手柄在正常范围内的移动用于轴向移动位于细长套筒的中空内部内的细长工作元件,工作元件轴的近端具有适于容纳在手柄之一中的螺栓凹槽内的螺柱 。 螺柱凹槽具有前开槽壁和敞开的顶端。 提供弹簧装置以在正常操作期间偏置手柄,并且提供闩锁装置以使弹簧脱离。 当弹簧脱离时,手柄可以移动超过其正常运动范围,使得它们可以被放置在拆卸位置,在该位置中工作元件的近端上的螺柱可以从螺柱凹槽向远侧拉动,以使得能够 要从仪器中取出的工作元件。