Textile materials, including paper webs, treated with a polyvinylamine polymer and a second agent that interacts with the polyvinylamine polymer is disclosed. The longitudinal axis of the canal passes on the logarithmical curve, wherein the mathematical sequence of the construction of the coordinates is different for each section of the curve. The temperature of the cardiovascular wall is measured with the temperature sensor, and the distance from the temperature sensor to the cardiovascular wall is determined. A connecting cylinder to which the input shaft is serration-fitted is integrally provided at a lower portion of the steering shaft.