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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0434817 (1995-05-04) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 782 인용 특허 : 22 |
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
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.
A surgical stapling instrument for applying one or more surgical staples to tissue, comprising: a stapling head assembly including a fixed jaw which supports a staple holder for receiving one or more surgical staples, a movable jaw which supports an anvil for clamping the tissue against said staple
A surgical stapling instrument for applying one or more surgical staples to tissue, comprising: a stapling head assembly including a fixed jaw which supports a staple holder for receiving one or more surgical staples, a movable jaw which supports an anvil for clamping the tissue against said staple holder when said jaws are closed, and a staple driver for driving the staples from said staple holder into the tissue and against said anvil; an actuator handle assembly including a jaw closure lever for closing said jaws to move said anvil into a tissue clamping position and a staple firing trigger for actuating said staple driver; a shaft assembly for mounting said stapling head assembly on said actuator handle assembly; a closure cable connecting said movable jaw to said jaw closure lever and extending through said shaft assembly for pulling said movable jaw toward said fixed jaw when said jaw closure lever is actuated; a firing cable connecting said staple driver to said staple firing trigger and extending through said shaft assembly for actuating said staple driver when said staple firing trigger is actuated; and jaw coupling means for slidably and pivotally coupling said movable jaw to said fixed jaw, said jaw coupling means including a slidable roller pin slidably and rotatably mounted in guide slots formed in each of said jaws; wherein: said stapling head assembly includes a tissue retaining pin mounted inside said fixed jaw, said tissue retaining pin being movable from a retracted position within said fixed jaw when said jaws are open to an extended position engaging said movable jaw when said jaws are closed; a pin placement mechanism is mounted on said fixed jaw for moving said tissue retaining pin between the retracted position and the extended position; said tissue retaining pin is mounted on a cantilever spring arm inside said fixed law which supports said retaining pin for movement between the retracted and extended positions; and a pin placement arm pivotally mounted inside said fixed jaw for engaging said cantilever spring arm and moving said retaining pin between the retracted and extended positions.
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