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    • 10. 发明授权
    • Surgical anastomosis stapling instrument with flexible support shaft and
anvil adjusting mechanism
    • 手术吻合吻合器具有柔性支撑轴和砧座调节机构
    • US5609285A
    • 1997-03-11
    • US417586
    • 1995-04-06
    • Richard L. GrantMichael LangPhilip J. ChurchillW. Thompson Lawrence
    • Richard L. GrantMichael LangPhilip J. ChurchillW. Thompson Lawrence
    • A61B17/115A61B17/28
    • A61B17/115A61B17/1155A61B2017/07257A61B2017/2905A61B2017/2927
    • A surgical stapling instrument for performing a circular anastomosis stapling operation is provided. The surgical instrument includes a stapling head assembly mounted by a flexible support shaft to an actuator handle assembly. The support shaft is capable of bending in any radial direction relative to its centerline into a curved configuration suitable for insertion into a patient. The flexible support shaft includes a dual coil structure which is adapted to support itself in any curved configuration and to resist deflection upon insertion into the patient and actuation of the stapling head assembly. The stapling head assembly includes a driver assembly which is operable in multiple stages to separate the staple forming and tissue cutting actions to reduce the peak force required to operate the instrument. The actuator handle assembly includes a staple actuating lever and a cam follower assembly which operate in two stages with different mechanical advantages to facilitate the operation of the instrument by a surgeon. The actuator handle assembly includes a thumb wheel for opening and closing the anvil and an adjusting knob for adjusting the anvil gap. A control lever is provided for pivoting the stapling head assembly relative to the flexible support shaft.
    • 提供了一种用于执行圆形吻合缝合操作的外科缝合器械。 手术器械包括由柔性支撑轴安装到致动器手柄组件上的吻合头组件。 支撑轴能够相对于其中心线在任何径向上弯曲成适合于插入患者体内的弯曲构型。 柔性支撑轴包括双线圈结构,其适于以任何弯曲构造支撑自身,并且在插入到患者体内时抵抗偏转,并致动装订头组件。 装订头组件包括驱动器组件,该组件可在多个阶段中操作以分离订书钉成形和组织切割动作,以减少操作仪器所需的峰值力。 致动器手柄组件包括缝钉致动杆和凸轮随动器组件,其以两个阶段操作,具有不同的机械优点,以便于由外科医生操作仪器。 致动器手柄组件包括用于打开和关闭砧座的拇指轮和用于调节砧座间隙的调节旋钮。 提供控制杆以使装订头组件相对于柔性支撑轴枢转。