Robotic medical systems and methods

A robotic surgical system, comprising:

• a member having a first controllable section and a second controllable section distal of the second controllable section;
• a drive assembly coupled to the tubular member;
• and
• a control interface for allowing a user to select one of the first and second controllable sections of the tubular member to move;
• wherein the drive assembly is configured to independently move the first controllable section or the second controllable section in response to an input command from the user received at the control interface.

A robotic surgical system, comprising:

• an elongate member having a pre-shaped configuration;
• a member disposed over the elongate member;
• a drive assembly coupled to the elongate member and the member;
• and
• a control interface for receiving an input command from a user;
• wherein the drive assembly is configured to move the member distally relative to the elongate member along the pre-shaped configuration of the elongate member in response to the input command received at the control interface.