Robotically-controlled motorized surgical instrument with an end effector

A surgical instrument, comprising:

• a housing comprising a motor;
• a shaft extending distally from the housing;
• an end effector extending distally from the shaft, the end effector comprising:
• a first jaw member;
• and
• a second jaw member movable relative to the first jaw member between an open position and a closed position;
• an axially movable drive member in operable communication with the second jaw member;
• and
• a rotary drive shaft in operable communication with the motor, wherein the rotary drive shaft is in operable engagement with the axially movable drive member, wherein at least one rotational motion of the rotary drive shaft causes the axially movable drive member to move the second jaw member relative to the first jaw member from the closed position to the open position.

A surgical tool for use with a robotic system, the surgical tool comprising:

• a shaft;
• an end effector extending distally from the shaft, the end effector comprising:
• a first jaw member;
• and
• a second jaw member movable relative to the first jaw member from a closed position to an open position in response to at least one axial motion;
• a motor configured to generate at least one rotational motion;
• and
• a motion conversion assembly operably coupled to the motor and the second jaw member, wherein the motion conversion assembly is configured to convert the at least one rotational motion to the at least one axial motion.

A surgical tool for use with a robotic system, the surgical tool comprising:

• a shaft;
• an end effector extending distally from the shaft, the end effector comprising:
• a first jaw member;
• and
• a second jaw member movable relative to the first jaw member from the open position to the closed position;
• camming means for camming the second jaw member relative to the first jaw member from the open position to the closed position;
• rotary input means for driving the camming means;
• and
• firing means distinct and independent from the camming means.