A surgical stapler, comprising: a handle portion; a shaft extending from said handle portion, said shaft including a proximal portion and a distal portion, wherein said distal portion defines an axis; and an end-effector extending from said distal portion, said end-effector comprising: a channel configured for receiving a staple cartridge, the staple cartridge configured to removably store staples therein; an anvil configured to deform said staples, wherein said anvil defines a slot; and a cutting member having a cutting surface, wherein said cutting member is relatively movable with respect to said anvil and the staple cartridge, wherein said slot is configured to receive at least a portion of said cutting member and define a path for said cutting member as it is moved relative to said anvil and the staple cartridge, wherein said path includes a straight portion, and a curved portion defined by at least one radius of curvature, wherein said straight portion has a proximal end and a distal end; and characterised in that said proximal end is positioned closer to said axis than said distal end, wherein said curved portion includes a first portion and a second portion, wherein said first portion is closer to said shaft than said second portion, and wherein said second portion is closer to said axis than said first portion; and wherein said first curved portion of said path joins said distal end of said straight portion to said second curved portion. a handle portion; a shaft extending from said handle portion, said shaft including a proximal portion and a distal portion, wherein said distal portion defines an axis; and an end-effector extending from said distal portion, said end-effector comprising: a channel configured for receiving a staple cartridge, the staple cartridge configured to removably store staples therein; an anvil configured to deform said staples, wherein said anvil defines a slot; and a cutting member having a cutting surface, wherein said cutting member is relatively movable with respect to said anvil and the staple cartridge, wherein said slot is configured to receive at least a portion of said cutting member and define a path for said cutting member as it is moved relative to said anvil and the staple cartridge, wherein said path includes a straight portion, and a curved portion defined by at least one radius of curvature, wherein said straight portion has a proximal end and a distal end; and a channel configured for receiving a staple cartridge, the staple cartridge configured to removably store staples therein; an anvil configured to deform said staples, wherein said anvil defines a slot; and a cutting member having a cutting surface, wherein said cutting member is relatively movable with respect to said anvil and the staple cartridge, wherein said slot is configured to receive at least a portion of said cutting member and define a path for said cutting member as it is moved relative to said anvil and the staple cartridge, wherein said path includes a straight portion, and a curved portion defined by at least one radius of curvature, wherein said straight portion has a proximal end and a distal end; and characterised in that said proximal end is positioned closer to said axis than said distal end, wherein said curved portion includes a first portion and a second portion, wherein said first portion is closer to said shaft than said second portion, and wherein said second portion is closer to said axis than said first portion; and wherein said first curved portion of said path joins said distal end of said straight portion to said second curved portion.