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    • 133. 发明授权
    • Surgical instruments for making precise incisions in a cardiac vessel
    • 用于在心脏血管中进行精确切口的手术器械
    • US6113616A
    • 2000-09-05
    • US27611
    • 1998-02-23
    • Charles S. TaylorJohn J. FrantzenIvan Sepetka
    • Charles S. TaylorJohn J. FrantzenIvan Sepetka
    • A61B17/00A61B17/28A61B17/32
    • A61B17/32A61B17/320016A61B2017/00243A61B2017/00703A61B2017/00778A61B2017/2925A61B2017/320052
    • Surgical instruments and methods for making substantially linear incisions, especially through walls of vessels, such arteries, specifically designed for coronary artery bypass graft procedures (CABG) on the beating heart. The invention is particularly useful to create the incision in the artery to which a bypass graft is sewn, typically the left anterior descending artery (LAD). The instruments allow incisions to be rapidly made, precisely measured and cleanly formed so that a bypass graft can be rapidly sewn in place, without undue trauma to surrounding tissue and excessive loss of blood. In one embodiment, a hand-held instrument has a cutting edge formed on the interior edge of a curved blade fixed near the end of the instrument. The tip of the blade has a point for penetrating the vessel wall which may have several alternate shapes to facilitate penetration of the vessel wall while minimizing to the surrounding tissue. In another embodiment the hand-held instrument includes a moveable member which creates an incision by engaging a cutting blade against a stop, cutting tissue therebetween, the stop including a pointed including a pointed tip similar to the previous embodiment. In another embodiment, the instrument features a motion-canceling member which compensates for the movement of the target surface to be incised. This embodiment has a cutting blade which is manipulated from a handle which is isolated from the movement of the tissue containing or proximate to the target of the incision.
    • 手术器械和方法,用于进行基本上线性的切口,特别是通过血管壁,这种动脉,专门设计用于搏动心脏上的冠状动脉旁路移植手术(CABG)。 本发明特别有用于在缝合旁路移植物的动脉中产生切口,通常为左前降支动脉(LAD)。 这些仪器允许快速地进行切割,精确测量和清洁地形成,使得旁路移植物可以快速缝合就位,而不会对周围组织造成过度的创伤和过度的血液损失。 在一个实施例中,手持式仪器具有形成在靠近仪器端部的弯曲刀片的内边缘上的切割刃。 叶片的尖端具有用于穿透血管壁的点,该点可以具有若干替代形状,以促进血管壁的穿透,同时使周围组织最小化。 在另一个实施例中,手持式器械包括可移动构件,其通过将切割刀片接合止挡件而形成切口,在其间切割组织,止动件包括类似于前述实施例的尖端,包括尖端。 在另一个实施例中,仪器具有补偿待切割的目标表面的移动的运动消除构件。 该实施例具有从手柄操纵的切割刀片,该手柄与包含或接近切口目标的组织的运动隔离。