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    • 33. 发明授权
    • Surgical instrument having a multiple rate directional switching mechanism
    • 具有多速率方向切换机构的手术器械
    • US07905380B2
    • 2011-03-15
    • US11810015
    • 2007-06-04
    • Frederick E. Shelton, IVRichard W. Timm
    • Frederick E. Shelton, IVRichard W. Timm
    • A61B17/32A61L2/00
    • A61B17/07207A61B17/072A61B2017/00367A61B2017/07285A61B2017/2923A61B2090/0811
    • A surgical instrument including a drive mechanism configured to advance a staple driver and/or cutting member at a first rate and retract the staple driver and/or cutting member at a different rate. In at least one embodiment, the rate at which the driver and cutting member is advanced and/or retracted is the distance that the driver and/or cutting member is translated per actuation of a trigger, for example. In various embodiments, the cutting member can be retracted at a faster rate as compared to the rate in which it is advanced. In such embodiments, the surgical instrument can, owing to the slower advancing rate, provide a greater torque or advancing force to the cutting member while, owing to the faster retracting rate, reduce the time required for the surgeon to retract the cutting member.
    • 一种手术器械,包括驱动机构,其构造成以第一速率推进缝钉驱动器和/或切割构件,并以不同的速率使钉驱动器和/或切割构件缩回。 在至少一个实施例中,例如,驱动器和切割构件前进和/或缩回的速率是驾驶员和/或切割构件按照触发器的致动而平移的距离。 在各种实施例中,与其前进的速率相比,切割构件可以以更快的速度缩回。 在这样的实施例中,由于较慢的推进速率,手术器械可以向切割构件提供更大的扭矩或推进力,同时由于更快的收缩速度,外科医生缩短了切割构件所需的时间。