SURGICAL INSTRUMENTS WITH PROGRESSIVE JAW CLOSURE ARRANGEMENTS

A surgical instrument is disclosed, and includes a first jaw and a second jaw that are movable between a closed position and an open position. An axially movable closure member is supported relative to the jaws to apply closing and opening motions thereto. A closure actuator operably interfaces with the closure member and is movable from an unactuated position corresponding to the open position in a closure direction during a closure procedure. A first control system is configured to apply an opening control motion to the closure actuator to return the closure actuator to the unactuated position upon completion of the closure procedure. A second control system is configured to apply a variable closure force to the closure member as the closure actuator is moved in the closure direction. 本发明公开了一种外科器械，该外科器械包括能够在闭合位置和打开位置之间运动的第一钳口和第二钳口。可轴向运动的闭合构件相对于钳口被支撑以向钳口施加闭合动作和打开动作。闭合致动器与闭合构件可操作地交接，并且能够在闭合规程期间沿闭合方向从对应于打开位置的未致动位置运动。第一控制系统被构造成能够在闭合规程完成时将打开控制动作施加到闭合致动器以使闭合致动器返回到未致动位置。第二控制系统被构造成能够随着闭合致动器沿闭合方向运动而将可变闭合力施加到闭合构件。