Insertion assisting system

An insertion assist system comprising:

• a tube configured to control a movement of an insertion portion of an endoscope through the tube, wherein the tube comprises:
• an opening configured to receive the insertion portion to protrude therefrom, and
• a guide surface configured to guide the insertion portion to protrude in a protruding direction from the opening, and
• a restrictor disposed inside the tube and configured to adjust the protruding direction of the insertion portion from the opening, the restrictor having a surface facing the guide surface and the restrictor being configured to move the surface in an advancing direction of the insertion portion to move the insertion portion in the advancing direction toward the guide surface, and
• a manipulator connected to an end of the tube,
• wherein the manipulator comprises a first manipulator and a second manipulator;
• the first manipulator being configured to advance and retract the insertion portion in the tube and to cause the insertion portion to protrude from the opening at an opposite end of the tube, and
• the second manipulator being configured to move the surface of the restrictor toward the guide surface.