| 摘要 |
A controller of an injection liquid set is provided to compress a tube by adjusting a valve, and to have a structure of preventing the inverse variation of the roller for adjusting the input and output of a liquid inside the tube. In a controller of an injection liquid set, a roller and a preventing portion are integrally formed. A tube(130) made of a soft material is installed on the controller. A roller of the controller in which a preventing portion is installed is used to compress the variable tube of the roller. The preventing portion prevents the inverse variation of the roller. The controller controls the input and output amount of the material inside the tube. The tube is compressed by the roller and the compressed state is maintained automatically.
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