What Is The Insertion Tube And Why Is It Important?

The insertion tube is the long flexible tube inserted into the body during normal use. The length and diameter of the insertion tube varies greatly by model as is dependent upon the anatomy viewed. Similar to the light guide tube, it is constructed of multiple layers of steel coil, fiber mesh and vulcanized rubber. The thickness of each layer may vary by model and by tube diameter. A clear protective outer layer is labeled with metric insertion depth marks.

The insertion tube is hollow and provides protection for the delicate internal components including the angulation system, fiber optics, video signal wires and biopsy channel. Sharp bending and over-coiling of the insertion tube will cause damage to the tube itself, and may damage the internal components. The damage is often indicated by raised ridges or buckles appearing along the tube.

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