Surgical instrument comprising first and second drive systems actuatable by a common trigger mechanism
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United States of America Patent
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Jan 27, 2015
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N/A
app pub date -
Oct 9, 2009
filing date -
Oct 9, 2009
priority date (Note) -
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Abstract
A surgical instrument can comprise a first drive system for advancing a knife bar between a first position and a second position in order to close a jaw, or clamping, member of an end effector. The first drive system can comprise a toggle clamp which can generate and transmit an asymptotical clamping load to the jaw member. The surgical instrument can further comprise a second drive system for advancing the knife bar between the second position and a third position. The second drive system can comprise a rack and pinion system and the surgical instrument can comprise a single trigger for actuating both the first drive system and the second drive system on the same stroke.
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