#$%^&*AU2008200957B220130822.pdf#####POWERED SURGICAL STAPLING DEVICE Abstract A surgical stapler (10) which includes a tool assembly, having a pair of opposing tissue engaging surfaces (110, 120) for deforming a plurality of surgical fasteners (115) 5 through and fastening tissue is disclosed. The surgical stapler (10) includes a housing (12) having a fixed handle (65) and a movable handle (60) mounted to said housing (12) and selectively movable relative to said fixed handle (65) from a first position to a second position to actuate the clamping of tissue. The stapler (10) further includes a drive assembly (20) including a motor, a power source and a coupling member (90). The motor 1o engages the coupling member, wherein movement of the movable handle (60) to the second position activates the motor, which advances a firing shaft (55) and forces a firing piston into said tool assembly to deform the surgical fasteners (115) through and fasten tissue.1/3 CC~j to to~ CCrj