An electrosurgical instrument, comprising: a housing; an elongated shaft having a proximal end coupled to the housing and a distal end; a knife drive shaft disposed within the housing and axially movable within the elongated shaft; a jaw drive shaft disposed within the housing and axially movable within the elongated shaft an end effector assembly including: a pair of opposing jaw members (202a, 202b); a knife member having a proximal end and a distal end, the knife member translatable through at least one jaw member, the proximal end of the knife member selectively engageable to a distal end of the knife drive shaft such that movement of the knife drive shaft moves the knife member; and a driven member having proximal and distal ends, the proximal end of the driven member configured to operably couple to the jaw drive shaft and the distal end of the driven member configured to operably couple to the pair of jaw members (202a, 202b) such that movement of the driven member moves the pair of jaw members (202a, 202b) between an open configuration and a closed configuration; and a coupling member configured to releasably secure the end effector assembly and the elongated shaft, characterised in that the knife member defines an opening therein and the knife drive shaft is configured to rotatably engage the opening such that the end effector assembly is rotatable about the knife drive shaft between an angled configuration with the elongated shaft and an aligned configuration with the elongated shaft. a housing; an elongated shaft having a proximal end coupled to the housing and a distal end; a knife drive shaft disposed within the housing and axially movable within the elongated shaft; a jaw drive shaft disposed within the housing and axially movable within the elongated shaft an end effector assembly including: a pair of opposing jaw members (202a, 202b); a knife member having a proximal end and a distal end, the knife member translatable through at least one jaw member, the proximal end of the knife member selectively engageable to a distal end of the knife drive shaft such that movement of the knife drive shaft moves the knife member; and a driven member having proximal and distal ends, the proximal end of the driven member configured to operably couple to the jaw drive shaft and the distal end of the driven member configured to operably couple to the pair of jaw members (202a, 202b) such that movement of the driven member moves the pair of jaw members (202a, 202b) between an open configuration and a closed configuration; and a pair of opposing jaw members (202a, 202b); a knife member having a proximal end and a distal end, the knife member translatable through at least one jaw member, the proximal end of the knife member selectively engageable to a distal end of the knife drive shaft such that movement of the knife drive shaft moves the knife member; and a driven member having proximal and distal ends, the proximal end of the driven member configured to operably couple to the jaw drive shaft and the distal end of the driven member configured to operably couple to the pair of jaw members (202a, 202b) such that movement of the driven member moves the pair of jaw members (202a, 202b) between an open configuration and a closed configuration; and a coupling member configured to releasably secure the end effector assembly and the elongated shaft, characterised in that the knife member defines an opening therein and the knife drive shaft is configured to rotatably engage the opening such that the end effector assembly is rotatable about the knife drive shaft between an angled configuration with the elongated shaft and an aligned configuration with the elongated shaft.