The present invention provides a medical apparatus including medical equipment to be introduced into a body, including an image pickup unit that picks up an image of an inspection target in the body, an outer casing that movably holds the image pickup unit, a fixing unit that fixes the outer casing together with the image pickup unit to an inner wall of the body in contact therewith and a field of view adjusting unit that makes the image pickup unit movable with respect to the outer casing and adjusts the direction of a field of view of the image pickup unit, and can thereby realize a small medical apparatus and equipment capable of performing low-invasive surgical operation without increasing burden on patients, easily adjusting the direction of the field of view while being fixed and kept in the body and improving viewability of the inspection target.