Surgical instrument with selector

An ultrasonic instrument comprising:

• (a) a body;
• (b) a trigger configured to actuate relative to the body;
• (c) a shaft assembly extending distally from the body, wherein the shaft assembly comprises an acoustic waveguide;
• (d) an end effector comprising:
• (i) an ultrasonic blade, wherein the ultrasonic blade is in acoustic communication with the acoustic waveguide, and
• (ii) a clamp arm, wherein the clamp arm is configured to pivot toward and away from the ultrasonic blade in response to the trigger actuating relative to the body;
• and
• (e) a trigger stop movably coupled with the body, wherein the trigger stop is movable between a first position and a second position,
• wherein the trigger stop is configured to, while in the first position, permit the trigger to actuate from a non-actuated position to a partially actuated position,
• wherein the trigger stop is configured to permit the trigger to actuate from the non-actuated position, past the non-actuated position, and into a fully actuated position when the trigger stop is in the second position,
• wherein the trigger stop is configured to inhibit the trigger from actuating from the partially actuated position to the fully actuated position when the trigger stop is in the first position,
• wherein the trigger stop is configured to activate a transducer in response to the trigger engaging the trigger stop.

An ultrasonic instrument comprising:

• (a) a body;
• (b) a trigger pivotably coupled with the body;
• (c) a shaft assembly extending distally from the body, wherein the shaft assembly comprises an acoustic waveguide;
• (d) an end effector comprising:
• (i) an ultrasonic blade, wherein the ultrasonic blade is in acoustic communication with the acoustic waveguide, and
• (ii) a clamp arm, wherein the clamp arm is configured to pivot toward and away from the ultrasonic blade in response to pivotal movement of the trigger relative to the body;
• and
• (e) a trigger blocking member movably coupled with the body, wherein the trigger blocking member is movable between a first position and a second position,
• wherein the trigger blocking member is configured to permit the trigger to pivot from a non-actuated position to a partially actuated position when the trigger blocking member is in the first position, thereby restricting movement or clamping force of the clamp arm,
• wherein the trigger blocking member is configured to permit the trigger to pivot from the non-actuated position to a fully actuated position when the trigger blocking member is in the second position,
• wherein the trigger blocking member is configured to prevent the trigger from pivoting from the partially actuated position to the fully actuated position when the trigger blocking member is in the first position,
• wherein the trigger blocking member is configured to activate a transducer in response to the trigger reaching the partially actuated position while the trigger blocking member is in the first position.