Liquid Mixing and Injecting Tool

A liquid mixing and injecting device comprising:

• a chamber part including:
• a plurality of branch tubes which extend from the chamber part in different directions, the plurality of branch tubes including an upper branch tube extending upwardly from the chamber part;
• a rubber plug having a slit formed therein, the rubber plug being supported in the upper branch tube in a position to occlude the upper branch tube, the slit being dimensioned to sealingly receive a connecting tube to fluidly couple the connecting tube to the chamber part, the rubber plug including:
• a body having a fixing piece secured to the upper branch tube;
• wherein the body of the rubber plug is pressed into a lower side of the upper branch tube along an outer peripheral surface of a connecting tube when the connecting tube is inserted into the slit;
• a receiving part positioned to receive a lower end part of the rubber plug, the receiving part being configured to control deformation of the lower end part of the rubber plug when the rubber plug is pressed into an inner end of lower side of the upper branch tube to prevent formation of an air gap in a flow path communicating the connecting tube with the chamber part.