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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0152758 (1980-05-23) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 779 인용 특허 : 6 |
A surgical stapler powered by a relatively low pressure gas supply contained in the stapler. The stapler has a mechanical linkage between the pneumatic actuator and the staple driver with a differential mechanical advantage to match the substantially constant force provided by the pneumatic actuator
A surgical stapler powered by a relatively low pressure gas supply contained in the stapler. The stapler has a mechanical linkage between the pneumatic actuator and the staple driver with a differential mechanical advantage to match the substantially constant force provided by the pneumatic actuator to the different forces required to first advance and then form the staple. This mechanical linkage allows use of a relatively small low pressure actuator and also substantially increases the efficiency with which the gas supply is utilized.
Improved gas powered surgical stapling apparatus including a pneumatic piston and a longitudinally reciprocal staple driver for both advancing a staple to a staple forming position and then forming the staple, the staple moving directly with the staple driver during advance of the staple and being b
Improved gas powered surgical stapling apparatus including a pneumatic piston and a longitudinally reciprocal staple driver for both advancing a staple to a staple forming position and then forming the staple, the staple moving directly with the staple driver during advance of the staple and being bent directly by further motion of the staple driver during forming of the staple, wherein the improvement comprises a mechanical linkage between the pneumatic piston and the staple driver for causing the staple driver to advance more rapidly than the pneumatic piston during the advance of the staple to the staple forming position and for causing the staple driver to advance more slowly than the pneumatic piston during forming of the staple, the mechanical linkage applying a smaller force to the staple driver than the output force of the pneumatic piston while the staple driver is advancing more rapidly than the pneumatic piston, and the mechanical linkage applying a larger force to the staple driver than the output force of the pneumatic piston while the staple driver is advancing more slowly than the pneumatic piston.
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