A surgical device, comprising: a handle configured to be held by a hand of an operator; a shaft portion coupled to the handle, the shaft portion defining a shaft longitudinal axis ("D"); an end effector supported on a distal end of the shaft portion so as to rotate and pivot relative to the shaft portion; a first drive shaft extending through the shaft portion and operatively connected to the end effector to effectuate a rotation of the end effector about the shaft longitudinal axis of the shaft portion; a second drive shaft extending through the shaft portion and operatively connected to the end effector to effectuate a pivoting of the end effector relative to the shaft longitudinal axis of the shaft portion; and a controller supported on the handle so as to be actuated by a thumb of the hand of the operator holding the handle, the controller including: a first rotatable member; and a second rotatable member; the first rotatable member being configured to rotate the first drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction rotation and second direction rotation of the end effector relative to the shaft portion; and the second rotatable member being configured to rotate the second drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction pivoting and second direction pivoting of the end effector relative to the shaft portion, characterised in that the first rotatable member and the second rotatable member are nested within one another. a handle configured to be held by a hand of an operator; a shaft portion coupled to the handle, the shaft portion defining a shaft longitudinal axis ("D"); an end effector supported on a distal end of the shaft portion so as to rotate and pivot relative to the shaft portion; a first drive shaft extending through the shaft portion and operatively connected to the end effector to effectuate a rotation of the end effector about the shaft longitudinal axis of the shaft portion; a second drive shaft extending through the shaft portion and operatively connected to the end effector to effectuate a pivoting of the end effector relative to the shaft longitudinal axis of the shaft portion; and a controller supported on the handle so as to be actuated by a thumb of the hand of the operator holding the handle, the controller including: a first rotatable member; and a second rotatable member; the first rotatable member being configured to rotate the first drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction rotation and second direction rotation of the end effector relative to the shaft portion; and the second rotatable member being configured to rotate the second drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction pivoting and second direction pivoting of the end effector relative to the shaft portion, characterised in that the first rotatable member and the second rotatable member are nested within one another. a first rotatable member; and a second rotatable member; the first rotatable member being configured to rotate the first drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction rotation and second direction rotation of the end effector relative to the shaft portion; and the second rotatable member being configured to rotate the second drive shaft in one of a first direction and a second direction upon a corresponding first direction and second direction rotation thereof to effectuate a corresponding first direction pivoting and second direction pivoting of the end effector relative to the shaft portion, characterised in that the first rotatable member and the second rotatable member are nested within one another.