Surgical instrument having a multiple rate directional switching mechanism
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United States of America Patent
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Mar 15, 2011
Grant Date -
Dec 4, 2008
app pub date -
Jun 4, 2007
filing date -
Jun 4, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A surgical instrument including a drive mechanism configured to advance a staple driver and/or cutting member at a first rate and retract the staple driver and/or cutting member at a different rate. In at least one embodiment, the rate at which the driver and cutting member is advanced and/or retracted is the distance that the driver and/or cutting member is translated per actuation of a trigger, for example. In various embodiments, the cutting member can be retracted at a faster rate as compared to the rate in which it is advanced. In such embodiments, the surgical instrument can, owing to the slower advancing rate, provide a greater torque or advancing force to the cutting member while, owing to the faster retracting rate, reduce the time required for the surgeon to retract the cutting member.
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