| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surgical stapling and severing instrument particularly suited to endoscopic procedures, which incorporates a handle that produces separate closing and firing motions to actuate an end effector. <P>SOLUTION: A handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e. staple and sever) the end effector. A linked transmission reduces the required handle longitudinal length, yet achieves a rigid, strong configuration when straightened for firing. A traction biased firing mechanism avoids binding in driving this straightened linked rack in cooperation with an anti-backup mechanism, with a lockout mechanism that prevents releasing the closure trigger during firing. Furthermore, an external indicator gives feedback to the surgeon as to how far firing has progressed, as well as providing a manual retraction capability. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
