Moving device and moving method of moving device

A moving method of a moving device comprising:

• a slider-unit moving procedure for controlling, unequally on a distal end side and a proximal end side of an elastic tube, a pressure of fluid supplied to or discharged from the elastic tube via at least either one of a first fluid supply pipe that communicates with an inside on the distal end side of the elastic tube, a sectional shape of which is elastically deformable according to an internal pressure, and a second fluid supply pipe that communicates with an inside on the proximal end side of the elastic tube and relatively moving, in a desired moving direction, a slider unit capable of moving forward and backward in a longitudinal direction of the elastic tube according to a change in the sectional shape of the elastic tube;
• a brake actuating procedure for deforming a brake provided in the slider unit in a radial direction and bringing the brake into sliding contact with a target object;
• an elastic-tube moving procedure for controlling, unequally on the distal end side and the proximal end side of the elastic tube, the pressure of the fluid supplied to or discharged from the elastic tube via at least either one of the first fluid supply pipe and the second fluid supply pipe and relatively moving the elastic tube in the moving direction with respect to the slider unit;
• and
• a brake releasing procedure for releasing the sliding contact of the brake with the target object.