| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surgical instrument including a switching mechanism in a surgical stapler. <P>SOLUTION: The surgical instrument including the switching mechanism allows a surgeon to selectively advance or retract a staple driver and/or cutting member within a staple cartridge. The surgical instrument can include a handle, a trigger operatively coupled to the handle, a firing drive, and an end effector. The firing drive can include a first ratchet assembly configured to advance a cutting member in the end effector and a second ratchet assembly configured to retract the cutting member. The trigger can include first and second pawls pivotably mounted thereon. The first and second pawls are configured to be selectively engaged with the first and second ratchet assemblies, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT |
