A surgical tool comprising: a blade comprising: a rotatable cutting shaft comprising a distal cutting end and a proximal non-cutting end, and an outer sheath coaxially surrounding the rotatable cutting shaft, including a cutting window at the distal cutting end, at least a portion of the outer sheath being deflectable; an actuator coupled to a proximal end of the outer sheath and having a length, wherein manipulation of the actuator is achieved by twisting the actuator in a clockwise or counterclockwise direction about its length; a handpiece comprising a suction portion; and a first wire and a second wire, each operatively coupled at their proximal end to the actuator and at their distal end to the outer sheath at the distal cutting end of the outer sheath; wherein the first wire and the second wire deflect the deflectable portion when the actuator is manipulated, wherein the actuator comprises: a threaded inner wall; a first slider operatively coupled to the first wire and comprising a threaded outer wall spooled in a first direction, and a second slider operatively coupled to the second wire and comprising a threaded outer wall spooled in a second direction, opposite to the first direction; wherein the threaded inner wall engages with the threaded outer wall of the first slider and the threaded outer wall of the second slider and is configured to cause the first and second sliders to slide in opposite longitudinal directions to each other along the length of the actuator when the actuator is manipulated. a blade comprising: a rotatable cutting shaft comprising a distal cutting end and a proximal non-cutting end, and an outer sheath coaxially surrounding the rotatable cutting shaft, including a cutting window at the distal cutting end, at least a portion of the outer sheath being deflectable; an actuator coupled to a proximal end of the outer sheath and having a length, wherein manipulation of the actuator is achieved by twisting the actuator in a clockwise or counterclockwise direction about its length; a rotatable cutting shaft comprising a distal cutting end and a proximal non-cutting end, and an outer sheath coaxially surrounding the rotatable cutting shaft, including a cutting window at the distal cutting end, at least a portion of the outer sheath being deflectable; an actuator coupled to a proximal end of the outer sheath and having a length, wherein manipulation of the actuator is achieved by twisting the actuator in a clockwise or counterclockwise direction about its length; a handpiece comprising a suction portion; and a first wire and a second wire, each operatively coupled at their proximal end to the actuator and at their distal end to the outer sheath at the distal cutting end of the outer sheath; wherein the first wire and the second wire deflect the deflectable portion when the actuator is manipulated, wherein the actuator comprises: a threaded inner wall; a first slider operatively coupled to the first wire and comprising a threaded outer wall spooled in a first direction, and a second slider operatively coupled to the second wire and comprising a threaded outer wall spooled in a second direction, opposite to the first direction; a threaded inner wall; a first slider operatively coupled to the first wire and comprising a threaded outer wall spooled in a first direction, and a second slider operatively coupled to the second wire and comprising a threaded outer wall spooled in a second direction, opposite to the first direction; wherein the threaded inner wall engages with the threaded outer wall of the first slider and the threaded outer wall of the second slider and is configured to cause the first and second sliders to slide in opposite longitudinal directions to each other along the length of the actuator when the actuator is manipulated.