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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0598800 (1990-10-15) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 564 인용 특허 : 0 |
A surgical fastener, such as a stapler, is constructed of a pair of opposed jaws, one of which comprises an anvil and the other of which holds the fastener holder assembly, such as a cartridge, oriented towards the anvil. A clamp bar operable by a lever is longitudinally displaceable to advance the
A surgical fastener, such as a stapler, is constructed of a pair of opposed jaws, one of which comprises an anvil and the other of which holds the fastener holder assembly, such as a cartridge, oriented towards the anvil. A clamp bar operable by a lever is longitudinally displaceable to advance the cartridge towards the anvil to clamp the subject matter prior to fastening. The clamp bar rides within a frame which supports the lever and the jaws. A thrust bar is longitudinally displaceable in response to the pivoting of a trigger to operate staple pushing elements within the cartridge to eject the fasteners towards the anvil for engagement with body tissue to be fastened. The thrust bar rides within the clamp bar. A pin is inserted between ends of the jaws to secure the jaws against loss of any portion of the body tissue during the clamping procedure. The pin has a cam surface which moves during a securing of the pin. A lockout system is provided for preventing both clamping and ejection of the fasteners, e.g., staples, until the pin is secured. The lockout system includes a bell crank which blocks movement of the clamp bar during an unsecured state, the crank being operated by a cam follower which rides on the cam surface of the pin. An intermediate link connects the trigger with the thrust bar, the intermediate link riding on the lever to be retracted during blockage of the clamp bar so as to prevent operation of the thrust bar.
Apparatus for applying surgical fasteners to body tissue, comprising: a first jaw member comprising an anvil assembly; a second jaw member comprising a fastener holding assembly movably mounted relative to said anvil assembly; actuator means for moving the fastener holding assembly toward the anvil
Apparatus for applying surgical fasteners to body tissue, comprising: a first jaw member comprising an anvil assembly; a second jaw member comprising a fastener holding assembly movably mounted relative to said anvil assembly; actuator means for moving the fastener holding assembly toward the anvil assembly to clamp the tissue to be fastened between the anvil assembly and the fastener holding assembly; pin means arranged for securing said first and second jaw members, said pin means providing a secured state when securing said first and second jaw members and an unsecured state when said first and second jaw members are not secured; activation means for ejecting fasteners from said fastener holding assembly in a direction toward said anvil assembly; and lockout means disposed to be driven by said pin means for inhibiting operation of both said actuator means and said activation means while in said unsecured state, said lockout means permitting operation of both said actuator means and said activation means during said secured state; wherein said actuator means includes a clamp bar and an adjustment lever for advancing said bar, for urging together said anvil assembly and said fastener holding assembly; said activation means includes a thrust bar, a trigger for advancing said thrust bar to eject a fastener, and an intermediate link for removably coupling said trigger to said thrust bar; and said intermediate link is movable to a first position for coupling said trigger to said thrust bar and a second position wherein said trigger and thrust bar are not coupled.
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