Surgical instruments having modular end effector selectively coupleable to housing assembly

A surgical stapling instrument, comprising:

• a modular end effector, comprising:
• an end effector housing;
• an arcuate anvil;
• a translatable closure driver movable relative to the arcuate anvil from an open position toward a closed position during a closure stroke, wherein the translatable closure driver is to receive a staple cartridge therein;
• a rotatable closure driver to rotate to move the translatable closure driver through the closure stroke;
• a translatable firing driver movable relative to the arcuate anvil during a firing stroke;
• and
• a rotatable firing driver to rotate to move the translatable firing driver through the firing stroke;
• and
• a housing assembly, wherein the end effector housing is selectively coupleable to the housing assembly between a coupled configuration and an uncoupled configuration, and wherein the housing assembly comprises a motorized system to drive the rotatable closure driver and the rotatable firing driver in the coupled configuration.

A surgical stapling instrument, comprising:

• a modular end effector, comprising:
• a closure beam to receive a staple cartridge therein;
• a rotatable closure driver, wherein the closure beam is translatable through a closure stroke based on rotation of the rotatable closure driver;
• a firing bar comprising a knife;
• and
• a rotatable firing driver, wherein the firing bar is translatable through a firing stroke based on rotation of the rotatable firing driver;
• and
• a housing assembly, wherein the modular end effector is selectively coupleable to the housing assembly between a coupled configuration and an uncoupled configuration, and wherein the housing assembly comprises:
• a closure actuator, wherein the rotatable closure driver is to rotate based on the modular end effector being coupled to the housing assembly and actuation of the closure actuator;
• and
• a firing actuator, wherein the rotatable firing driver is to rotate based on the modular end effector being coupled to the housing assembly and actuation of the firing actuator.