A motorized surgical system includes at least one support positionable within a sterile field in proximity to a patient positioned on a surgical table. An instrument driver is carried by the support and includes a steerable distal end positionable in a body cavity. A user input device is carried by the support and is configured to generate movement signals in response to manual manipulation of a portion of the user input device by a user. One or more steering motors are operably coupled to the instrument driver and are operable to deflect the steerable distal end of the instrument driver in response to the movement signals.
