| abstract |
A relay dosing device (50) connected to a nitric oxide dosing device (20) for supplying NO generated from air is provided with an NO concentration meter (506), a flow meter (507) or a pressure meter (504), a control unit (600) for calculating the dosing amount of NO to be dosed to a patient based on the NO concentration measured by the NO concentration meter (506), the value of the flow meter (507) or the pressure meter (504), and a two-way valve (505), wherein the two-way valve (505) is configured to increase the flow rate when the calculated dosing amount is smaller than a predetermined value, and to decrease the flow rate when the calculated dosing amount is larger than the predetermined value. |