#$%^&*AU2013206659A120130718.pdf#####ROTATING KNOB LOCKING MECHANISM FOR SURGICAL STAPLING DEVICE ABSTRACT A surgical stapling instrument (10) is provided. The surgical stapling instrument (10) comprising: a handle assembly (12) having a movable handle (28) a tool assembly (20) having a plurality of surgical staples an elongate shaft (14) defining a longitudinal axis, the elongate shaft (14) mounted with the handle assembly (12) for rotation of the elongate shaft (14) about the longitudinal axis the handle assembly (12) further comprising a firing member (58) extending therefrom and a pivotable locking member (50) mounted in the handle assembly (12) the firing member (58) extending through the elongate shaft (14) and being advanced when the movable handle (28) is moved in a first direction to fire the surgical staples from the tool assembly (20) and the pivotable locking member (50) having a surface for engagement by the firing member (58) when the movable handle (28) is moved in the first direction and a distal end that moves into engagement with the elongate shaft (14) when the surface is engaged by the firing member (58).
