Surgical instrument with multi-function button

An ultrasonic instrument comprising:

• (a) a body, wherein the body comprises a pistol grip;
• (b) an actuation assembly positioned distal to the pistol grip, wherein the actuation assembly comprises an activation member, wherein the activation member is operable to rotate in a first direction to select a mode of operation;
• (c) a shaft assembly extending distally from the body, wherein the shaft assembly defines a longitudinal axis, wherein the shaft assembly comprises an acoustic waveguide;
• and
• (d) an end effector comprising an ultrasonic blade, wherein the ultrasonic blade is in acoustic communication with the acoustic waveguide,
• wherein the activation member is operable to move in a second direction to activate the end effector in the mode of operation selected by rotational movement of the activation member in the first direction, wherein the first and second directions are contained within the same plane.

An ultrasonic instrument, comprising:

• (a) a body;
• (b) an actuation assembly, wherein the actuation assembly comprises an activation member, wherein the activation member is operable to pivot within a plane to select a mode of operation;
• (c) a shaft assembly extending distally from the body, wherein the shaft assembly defines a longitudinal axis, wherein the shaft assembly comprises an acoustic waveguide;
• and
• (d) an end effector comprising an ultrasonic blade, wherein the ultrasonic blade is in acoustic communication with the acoustic waveguide,
• wherein the activation member is operable to translate within the plane to activate the end effector in the mode of operation selected by pivotal movement of the activation member.