#$%^&*AU2013260748B220150521.pdf#####STAPLE DRIVE ASSEMBLY ABSTRACT A staple cartridge (2140), comprising: a plurality of rows of retention slots (2144); a first staple pusher (2160), the first staple pusher (2160) configured to interact with at least one staple in a first row of retention slots (2144); and a second staple pusher (2170), the second staple pusher (2170) configured to interact with at least two staples in a second row of retention slots (2144). (R(hkAAAA 1)-mm