Surgical instrument with multiple clamping mechanisms

A surgical instrument, comprising:

• a shaft comprising a proximal end and a distal end;
• an end effector extending from the distal end of the shaft, wherein the end effector comprises a first jaw, a second jaw, and an electrode, wherein the first jaw is movable relative to the second jaw between an open position and a closed position to compress tissue intermediate the first jaw and second jaw when in the closed position;
• a handle extending from the proximal end, wherein the handle comprises a gripping portion;
• and
• a trigger assembly extending from the handle, wherein the trigger assembly comprises a trigger movable relative to the gripping portion through a first range of motion from an unactuated position to a first actuated position, wherein the trigger is movable through a second range of motion from first actuated position to a second actuated position, and wherein the trigger is movable thorough a third range of motion from the second actuated position to the unactuated position, wherein the trigger is operable to control the end effector to selectively compress tissue at a first compressive force when the trigger is in the first actuated position and a second compressive force when the trigger is in the second actuated position, wherein the first compressive force is greater than the second compressive force.

A surgical instrument, comprising:

• a shaft comprising a proximal end and a distal end;
• an ultrasonic waveguide at least partially positioned within the shaft, the waveguide having a proximal end and a distal end;
• an ultrasonically actuated blade positioned at the distal end of the waveguide;
• a clamp arm assembly pivotally connected to the distal end of the shaft, wherein the clamp arm assembly comprises at least two camming members rotationally attached to a clamp arm, wherein the clamp arm is movable between an open position and a closed position relative to the blade to compress tissue intermediate the clamp arm and blade when in the closed position, and wherein the at least two camming members rotate relative to the clamp arm to separate tissue layers when the clamp arm moves between the open position and a closed position.