Patent ID: 8657818

Claim:
A surgical instrument, comprising: an elongated tube having a proximal end and a distal end; a handle coupled to the proximal end of the tube, the handle comprising a proximal end, a distal end, and a control, wherein the control comprises a carriage translatable with respect to a portion of the handle and a coupler moveable about an external surface of the carriage; and a tool that is rotatable and translatable relative to the tube through movement of the control; wherein the control is configured for rotating the tool relative to the tube and is coupled to the tool such that a movement of a portion of the control through an angle θ c rotates the tool relative to the tube by an angle θ t that is greater than θ c , wherein the angle θ c is variable as determined by a user, and wherein the angle θ t of rotation by the tool is at least 180° when the angle θ c is 40° or less.