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    Locking mechanism for endoscopic or laparoscopic surgical instruments
    1.
    发明授权
    Locking mechanism for endoscopic or laparoscopic surgical instruments 失效
    内窥镜或腹腔镜手术器械的锁定机构

    公开(公告)号：US5431675A

    公开(公告)日：1995-07-11

    申请号：US323419

    申请日：1994-10-13

    申请人： David A. Nicholas ,  David T. Green ,  Henry Bolanos ,  H. Jonathan Tovey ,  Paul O. Rawson

    发明人： David A. Nicholas ,  David T. Green ,  Henry Bolanos ,  H. Jonathan Tovey ,  Paul O. Rawson

    IPC分类号： A61B17/04 ,  A61B17/11 ,  A61B17/28 ,  B25B7/12 ,  B25B7/14 ,  A61B17/32

    CPC分类号： A61B17/2909 ,  A61B17/062 ,  A61B17/2833 ,  B25B7/12 ,  B25B7/14 ,  A61B2017/1125 ,  A61B2017/2922 ,  A61B2017/2946

    摘要： A surgical instrument according to an embodiment of the present invention includes a housing portion and an endoscopic portion having a proximal end and a distal end, the endoscopic portion including a pair of coaxial members attached at the proximal end to the housing portion. The endoscopic portion also includes an inner rod member slidable within an outer tube member. The endoscopic portion terminates at the distal end in a pair of jaw members disposed in opposing relation and relatively pivotal about a common point between at least an open position and a closed position. A jaw control mechanism is associated with the housing portion, and includes at least one actuating member movably mounted in the housing portion. The actuation member has at least one gripping portion thereon such that an operator of the instrument can better manipulate the actuating member with a single hand. A linking member is pivotally connected to the actuating member and the inner rod member. A notch portion is disposed on the rod member such that when the actuating member is moved in relation to the housing portion in a first direction to a first position the engaging portion engages the notch, locking the jaws in a closed position. The surgical instrument also includes means for preventing the inner rod member from moving from the first position whereby coaxial reciprocating forces are created in the inner rod member when the locking means are moved to the first position.

    摘要翻译： 根据本发明的实施例的外科器械包括：壳体部分和具有近端和远端的内窥镜部分，所述内窥镜部分包括一对同轴部件，所述同轴部件在近端附接到所述壳体部分。 内窥镜部分还包括可在外管构件内滑动的内杆构件。 内窥镜部分在远端处终止于相对的关系中设置的一对钳口构件，并且在至少打开位置和关闭位置之间的共同点相对枢转。 夹爪控制机构与壳体部分相关联，并且包括可移动地安装在壳体部分中的至少一个致动构件。 致动构件在其上具有至少一个把持部分，使得仪器的操作者可以用单手更好地操纵致动构件。 连接构件枢转地连接到致动构件和内杆构件。 凹口部分设置在杆构件上，使得当致动构件相对于壳体部分沿第一方向移动到第一位置时，接合部分接合凹口，将夹爪锁定在关闭位置。 手术器械还包括用于防止内杆构件从第一位置移动的装置，由此当锁定装置移动到第一位置时，在内杆构件中产生同轴的往复力。