One endoscope includes being connected to flexible, steerable a, handle for the resistive insertion tube of knot. One endoscope insertion tube may include an axis, close to the hardometer part of a lower part of a distal end of axis, and in the higher durometer section position in the hardometer part of lower part and one between hardness part. Endoscope insertion tube can also include the 4th thermoplastic laminate body portion close to a proximal end of axis and have a higher durometer. A kind of method for manufacturing an endoscope insertion tube may include with one, two or more lateral slots and liner one mandrel of insertion enter an axis, wherein liner is between mandrel and axis, in conjunction with liner a stick portion to axis an inner surface, the separated other parts of liner from axis are inserted into the first deflection wire in the gap between the axis and the part do not adhered of liner.
