Hydrogen addition device and hydrogen addition method

A hydrogen addition device for adding hydrogen to a biocompatible solution of a liquid containing body formed by a molecular hydrogen permeable container and the biocompatible solution sealed therein, comprising:

• a tank for housing the liquid containing body being unopened;
• a hydrogen water generator for producing dissolved hydrogen water formed by water with hydrogen dissolved therein to supply to the tank;
• a heater for heating the dissolved hydrogen water in the tank to warm the biocompatible solution of the liquid containing body housed in the tank so as to contact with the dissolved hydrogen water;
• a drainage tank for storing the dissolved hydrogen water discharged from the tank;
• a valve, when opened, allowing the dissolved hydrogen water in the tank to be discharged to the drainage tank;
• a water volume sensor to detect whether or not the drainage tank is full;
• a housing configured to house the tank, the hydrogen water generator, the heater and the drainage tank;
• the housing provided with a rail for guiding the drainage tank when the drainage tank is housed in and taken out from the housing;
• and
• a controller for controlling the valve based on electrical signals from the water volume sensor such that the valve is opened for discharging if the drainage tank is not full, and the valve is closed if the drainage tank is full.