| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surgical instrument including a closure system configured to move an anvil of an end effector among an open position, a partially closed position and a closed position. <P>SOLUTION: The surgical instrument can further include a lock member configured to selectively engage and lock the closure system when the anvil is positioned either at the partially closed position or at the closed position. In at least one embodiment, the surgical instrument can include a trigger configured to pivot the anvil, the lock member can include a follower part, and a closure driving device can include a lock spring configured to energize the follower part against a cam surface of the trigger. When the anvil is pivoted to the partially closed position or to the closed position, the follower part can engage a notch on the cam surface to prevent the anvil from being pivoted to the open position. <P>COPYRIGHT: (C)2009,JPO&INPIT |
