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    • 6. 发明公开
    • Ratchet locking mechanism for surgical instruments
    • 棘轮机构的手术器械
    • EP1066797A1
    • 2001-01-10
    • EP00305722.1
    • 2000-07-06
    • ETHICON ENDO-SURGERY, INC.
    • Measamer, John P.Koch, Robert L.Welch, Robert F.Nguyen, Anthony T.
    • A61B17/28
    • A61B17/2909A61B2017/2946
    • A hand held surgical instrument for grasping and clamping tissue is disclosed. The surgical instrument has a handle body assembly (40) and an elongated shaft (80). The shaft (80) is connected to the handle body assembly (40) at a proximal end and has an end effector (95) at a distal end. The end effector (95) is operably coupled to an actuation member (105) extending from the handle body (40). The actuation member (105) is moveable toward and away from the handle body (40) to open and close the end effector (95). A locking tab (155) is located on the handle body assembly (40) and is moveable between a locked position and an unlocked position. A locking rod (108) is movably engaged with a hole in the locking tab (155). When the locking tab (155) is in the unlocked position, the actuation member (105) is free to move towards and away from the handle body assembly (40) to open and close the end effector (95). When the locking tab (155) is in the locked position, movement to open the actuation member (105) is prevented. The handle body assembly (40) also has release trigger (120) extending from the handle body assembly (40) and operably coupled to the locking tab (155). Consecutive reciprocations of the release trigger (120) alternates the locking tab (155) between the locked position and the unlocked position.