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    • 6. 发明授权
    • Low volume, high precision, positive displacement pump
    • 体积小,精度高,容积式泵
    • US06224347B1
    • 2001-05-01
    • US09394252
    • 1999-09-13
    • George A. ClarkRobert J. Hayes
    • George A. ClarkRobert J. Hayes
    • F04B126
    • F04B1/128F04B1/324
    • A pump (10) includes a motor (11) which rotates a pumping assembly (52) which includes a face plate (54) and a cylinder (56). A piston (67) reciprocates in the cylinder (56) to draw fluid into the cylinder (56) from an intake groove (78) and an intake port (76) formed in a manifold plate (73) positioned adjacent to the face plate (54), and to thereafter discharge that fluid to a discharge groove (80) and a discharge port (77) formed in the manifold plate (73). The piston (67) rides on a swash plate (49) as the face plate (54) rotates, and the extent of reciprocation of the piston (67) and therefore the amount of fluid to be dispersed on each reciprocation of the piston (67) is controlled by an adjuster wheel (40) which can be moved to allow the swash plate (49) to pivot a predetermined extent. As such, the pump (10) can dispense a known precise amount of fluid on each reciprocation of the piston (67).
    • 泵(10)包括使包括面板(54)和气缸(56)的泵送组件(52)旋转的马达(11)。 活塞(67)在气缸(56)中往复运动,以从形成在与面板相邻定位的歧管板(73)中的进气槽(78)和进气口(76)将流体吸入气缸(56) 54),然后将该流体排出到形成在歧管板(73)中的排出槽(80)和排出口(77)。 当面板(54)旋转时,活塞(67)骑在斜盘(49)上,并且活塞(67)的往复运动的程度以及因此在活塞(67)的每个往复运动中分散的流体的量 )由可以移动以允许斜盘(49)枢转预定范围的调节轮(40)控制。 因此,泵(10)可以在活塞(67)的每个往复运动上分配已知的精确量的流体。
    • 7. 发明授权
    • Surgical stapling instrument with articulated stapling head assembly on
rotatable and flexible support shaft
    • 手术吻合器具铰链式装订头组件在可旋转和柔性支撑轴上
    • US5465894A
    • 1995-11-14
    • US162737
    • 1993-12-06
    • George A. ClarkMalcolm C. BurwellJohn A. GolaChristopher RobinsonFred E. Snyder
    • George A. ClarkMalcolm C. BurwellJohn A. GolaChristopher RobinsonFred E. Snyder
    • A61B17/072A61B17/28A61B17/068
    • A61B17/072A61B2017/07214A61B2017/2905A61B2017/2927
    • An improved surgical instrument is provided for applying surgical fasteners, such as staples, to human tissue which is particularly suited for applying one or more rows of fasteners across a tissue lumen. The surgical instrument can be used in thoracic and abdominal surgical procedures where access to the surgical site is restricted. The surgical instrument includes an articulated fastener applying assembly mounted on a rotatable and flexible support shaft assembly to provide more convenient access to restricted surgical sites. The fastener applying assembly has a compact construction including a fixed jaw which supports a fastener cartridge and a movable jaw which supports an anvil for clamping the tissue therebetween. The fastener applying assembly includes a pin placement mechanism which is actuated by the movable jaw to control the movement of a tissue retaining pin on the fixed jaw. A dual cam mechanism is provided for driving the fasteners into the tissue clamped between the anvil and the fastener cartridge. The instrument has an actuator handle assembly with an improved actuator mechanism for closing the jaws and driving the fasteners into the tissue.
    • 提供了一种改进的外科器械,用于将外科紧固件(例如钉)施加到人体组织,特别适用于跨组织内腔施加一排或多排紧固件。 手术器械可用于胸外科手术,其中手术部位的进入受到限制。 手术器械包括安装在可旋转且柔性的支撑轴组件上的铰接的紧固件施加组件,以提供对限制性手术部位的更方便的接近。 紧固件施加组件具有紧凑的构造,其包括支撑紧固件卡盘的固定夹爪和支撑用于夹紧组织的砧座的活动夹爪。 紧固件施加组件包括销放置机构,其由可动夹爪致动以控制组织保持销在固定夹爪上的移动。 提供双凸轮机构用于将紧固件驱动到夹在砧座和紧固件盒之间的组织中。 该仪器具有致动器手柄组件,其具有用于闭合钳口并将紧固件驱动到组织中的改进的致动器机构。