Abstract: Systems and methods for actuating an end-effector of a surgical instrument are provided. The surgical instrument includes a surgical instrument interface operatively coupled to an instrument shaft having an end-effector. The surgical instrument interface includes a pair of actuators slidably disposed within longitudinal openings of a housing of the surgical instrument interface and engaged with a grooved opening of a barrel rotatably disposed within the housing, such that translational movement of the actuators within the longitudinal openings is converted to rotational movement of the barrel along the grooved opening. The surgical instrument interface further may include a torsion spring pre-loaded with a predetermined torque such that rotation of the barrel causes rotation of the instrument shaft if the torque generated between the barrel and the instrument shaft is less than the predetermined torque of the spring. Rotation of the instrument shaft actuates the end-effector via a cam mechanism.

Abstract: Systems and methods for actuating an end-effector of a surgical instrument are provided. The surgical instrument includes a surgical instrument interface operatively coupled to an instrument shaft having an end-effector. The surgical instrument interface includes a pair of actuators slidably disposed within longitudinal openings of a housing of the surgical instrument interface and engaged with a grooved opening of a barrel rotatably disposed within the housing, such that translational movement of the actuators within the longitudinal openings is converted to rotational movement of the barrel along the grooved opening. The surgical instrument interface further may include a torsion spring pre-loaded with a predetermined torque such that rotation of the barrel causes rotation of the instrument shaft if the torque generated between the barrel and the instrument shaft is less than the predetermined torque of the spring. Rotation of the instrument shaft actuates the end-effector via a cam mechanism.