| 主权项 |
1. A forceps, comprising:
an end effector assembly including first and second jaw members, at least one of the jaw members movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween, each jaw member including a distal jaw portion defining a tissue-contacting surface and a proximal flange portion; an inner shaft operably positioned relative to the jaw members, wherein, when the jaw members are disposed in the spaced-apart position, the inner shaft is disposed in a distal position, and wherein, when the jaw members are moved to the approximated position, the proximal flanges of the jaw members urge the inner shaft proximally to a proximal position; a knife assembly including a knife movable between a retracted position and an extended position, wherein the knife extends between the jaw members to cut tissue grasped therebetween; a trigger assembly including a trigger coupled to the knife assembly, the trigger movable between an un-actuated position and an actuated position for moving the knife between the retracted position and the extended position, respectively; and a lockout arm engaged to the trigger and extending therefrom, wherein, when the inner shaft is disposed in the distal position, the inner shaft is positioned to directly block the lockout arm to thereby inhibit movement of the trigger to the actuated position and wherein, when the inner shaft is disposed in the proximal position, a clearance is provided to permit movement of the lockout arm, thereby permitting movement of the trigger to the actuated position. |
