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By changing the rubber plug of infusion glass bottle, Medical Hourglass aims to solve problems like this. Added with a round of groove on the top of the rubber plug, one infusion glass bottle is able to be connected to another one. Since a hole exists on the top of every used bottle, nurses only need to pour the proper amount of sand into the bottle which takes the exact time to leak from the hole.
Jiangsu University of Technology
ChangZhou City, China