Motor-driven surgical cutting instrument

A surgical system, comprising:

• an end effector, comprising:
• a first jaw;
• and
• a second jaw rotatable relative to said first jaw between an open position and a closed position;
• a firing member movable within said end effector along a firing path between a starting position and an ending position;
• a motor comprising a shaft, wherein said motor is configured to drive said firing member toward said ending position based on said shaft rotating in a first rotational direction;
• a battery pack operably coupled with said motor, wherein said battery pack comprises at least two battery cells, wherein said at least two battery cells are connected in series as said firing member moves between said starting position and said ending position, and wherein said battery pack is configured a provide a set voltage to said motor during the operation thereof;
• and
• a control circuit operably coupled to said motor, wherein said control circuit is configured to switch between a plurality of operational modes during said rotation of said shaft in said first rotational direction, and wherein said plurality of operational modes comprises:
• a first operational mode, wherein a first amount of current is supplied to said motor from said battery pack, and wherein said control circuit operates in said first operational mode as said firing member is driven from said starting position toward a predetermined position along said firing path;
• and
• a second operational mode, wherein a second amount of current is supplied to said motor from said battery pack, wherein said second amount of current is greater than said first amount of current, and wherein said control circuit operates in said second operational mode as said firing member is driven from said predetermined position toward said ending position.

A surgical system, comprising:

• an end effector, comprising:
• a first jaw;
• and
• a second jaw movable relative to said first jaw between an open position and a clamped position;
• a firing member movable within said end effector along a firing path between a proximal position and a distal position;
• a motorized system configured to drive said firing member between said proximal position and said distal position;
• a power pack operably coupled with said motorized system, wherein said power pack comprises at least two power cells, wherein said at least two power cells are connected in series as said firing member moves between said proximal position and said distal position, and wherein said power pack is configured to provide a substantially constant voltage to said motorized system during the operation thereof;
• and
• a control circuit operably coupled to said motorized system, wherein said control circuit is configured to switch between a plurality of operational configurations as said motorized system drives said firing member toward said distal position, and wherein said plurality of operational configurations comprises:
• a first operational configuration, wherein a first amount of current is supplied to said motorized system from said power pack, and wherein said control circuit is in said first operational configuration as said firing member is driven from said proximal position toward a predetermined position along said firing path;
• and
• a second operational configuration, wherein a second amount of current is supplied to said motorized system from said power pack, wherein said second amount of current is greater than said first amount of current, and wherein said control circuit is in said second operational configuration as said firing member is driven from said predetermined position toward said distal position.

A surgical system, comprising:

• an end effector, comprising:
• an anvil;
• and
• an elongate channel, wherein said anvil and said elongate channel are configurable between an open configuration and a closed configuration;
• a firing member movable within said end effector along a firing path between a starting position and an ending position;
• a motor configured to drive said firing member toward said ending position;
• a battery pack operably coupled with said motor, wherein said battery pack comprises at least two battery cells, and wherein said at least two battery cells are connected in series as said firing member moves between said starting position and said ending position;
• and
• a control circuit operably coupled to said motor, wherein said control circuit is configured to switch between a plurality of operational states as said motor drives said firing member toward said ending position, and wherein said plurality of operational states comprises:
• a first operational state, wherein a first amount of current is supplied to said motor from said battery pack, and wherein said control circuit operates in said first operational state as said firing member is driven from said starting position toward a predetermined position along said firing path;
• and
• a second operational state, wherein a second amount of current is supplied to said motor from said battery pack, wherein said second amount of current is greater than said first amount of current, wherein said control circuit operates in said second operational state as said firing member is driven from said predetermined position toward said ending position, and wherein a voltage provided to said motor from said battery pack is substantially the same in said first operational state and said second operational state.