The camera can detect sources of light inside the body, such as the illuminated tip of the endoscope's long flexible tube.

It works by threading a tiny camera attached to a thin flexible tube into the lower part of the bowel.

A rotor with a number of rollers, shoes, wipers, or lobes attached to the external circumference of the rotor compresses the flexible tube.

A small flexible tube (nasogastric tube) may be inserted from the nose into the stomach to help decompress the dilated bowel.

When applying the injection port, an insertion needle guides a soft cannula (a small, flexible tube) under the skin.