Stapler apparatus and methods for use

An end effector for a stapler apparatus including a shaft comprising a proximal end including a handle, a distal end sized for introduction into a patient's body, and a longitudinal axis extending between the proximal and distal ends, the end effector comprising:

• one or more connectors for removably connecting the end effector to the distal end of the shaft;
• first and second jaws that are movable relative to one another between open and closed positions using a first actuator on the handle, thereby directing first and contact surfaces of the first and second jaws away from and towards one another, respectively;
• and
• a cartridge carried by the first jaw comprising first and second sets of staples arranged in rows on opposite sides of a cutting element such that actuation of a second actuator on the handle deploys the staples into tissue between the first and second contact surfaces and drives the staples against the second jaw to deform the one or more staples, wherein at least some of the staples are a different size than other staples.

An imaging sleeve for a stapler apparatus, comprising:

• an elongate tubular member comprising a proximal end, a distal end sized for introduction into a patient's body, and a lumen extending between the proximal and distal ends sized for receiving a shaft of the stapler apparatus, thereby defining a longitudinal axis there between;
• a display;
• and
• one or more deployment arms on the tubular member adjacent the distal end carrying an imaging device, each deployment arm comprising a first end pivotably coupled to the tubular member and a second free end that is movable from a retracted position wherein the second end is aligned with a wall of the tubular member and a deployed position wherein the second end moves outwardly relative to the longitudinal axis for presenting images on the display.