An endoscope with a rigid inserted portion intended for the visual examination and treatment of the sigmoid colon (the distal S-shaped part of the large intestine leading to the rectum). It is inserted through the anus during sigmoidoscopy or proctosigmoidoscopy. The anatomical images are illuminated by a built-in or external light source and can be viewed by the user through relayed lens optics or a fibreoptic bundle. This device is typically used to examine the structures and lining of the sigmoid colon and for indications of altered bowel habit, colonic cancer, or polyps. This is a reusable device.