1. rectoscope, comprising a tube with a disposable obturator, a transition element for fixing the housing to the handle illuminator tube rigidly mounted on the proximal end of the tube and formed as a sleeve with an inner diameter corresponding to the outer diameter of the tube body, characterized in that the housing tube and obturator are made of medical grade plastic, while the outer surface of the tube body is made in the form of linear marking digitized scratches, and the sleeve is made from either metal or plastmassy.2. Rectoscope of claim. 1, characterized in that as a medical grade plastic used polymers, at least, such as polyvinyl chloride, or polypropylene or polystyrene, polyethylene, or polycarbonate, or styrene copolymers, or thermoplastic polyurethane, or polyamide, or PEEK. 3. Rectoscope of claim. 1, characterized in that as a medical grade plastic used, at least sulfony.4. Rectoscope of claim. 1, characterized in that as a medical grade plastic used, of at least acrylic smoly.5. Rectoscope, comprising a formed as a single monolithic piece cylindrical disposable tube and the transition element intended for fixing the casing tube with the handle of the illuminator, and the obturator, characterized in that it is monolithic item and obturator are made of medical grade plastic, and the outer surface of monolithic piece in near the tube body is made in the form of linear marking digitized risok.6. Rectoscope of claim. 5, characterized in that as a medical plastic polymers used, at least, such as polyvinyl chloride, or polypropylene, or1. Ректоскоп, включающий одноразовый тубус с обтуратором, переходный элемент для фиксации корпуса тубуса с рукояткой осветителя, жестко закрепленный на проксимальном конце тубуса и выполненный в виде втулки с внутренним диаметром, соответствующим внешнему диаметру корпуса тубуса, отличающийся тем, что корпус тубуса и обтуратор выполнены из медицинского пластика, при этом на внешней поверхности корпуса тубуса выполнена линейная
