Surgical stapling instrument with drive assembly having toggle features

An apparatus comprising:

• (a) a handpiece in communication with a power supply;
• (b) a operator control positioned on the handpiece;
• (c) a translating drive member extending distally from the handpiece, wherein the translating drive member is operable to distally advance and proximally retract relative to the handpiece;
• (d) a staple driver in communication with the translating drive member;
• and
• (f) a drive assembly in communication with the translating drive member, wherein the drive assembly comprises a motor operable to convey linear motion to the translating drive member, wherein the motor is configured to advance and retract the translating drive member with a single revolution of the motor.

A method of driving a staple driving member, the method comprising:

• (a) receiving an operator command through the operator input to drive the staple driving member;
• (b) rotating the motor through a first portion of a full revolution;
• (c) converting rotation of the motor through the first portion of the full revolution into distal advancement of the staple driving member;
• (d) rotating the motor through a second portion of the full revolution to complete the full revolution;
• and
• (e) converting rotation of the motor through the second portion of the full revolution into proximal retraction of the staple driving member.