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As we all know, when being given fluids, patients have to stare at the bottle all the time in case of being injected with air, which is unsafe and tiring.
Toot-Toot Infusion Stand is a new infusion stand, which can make sound like toot to warn nurses and patients when liquid in bottle is almost gone.
When the level of liquid drops to a certain location, the ray receiver can not gain the ray because of total internal reflection, which means that there is little liquid in the bottle. And then here comes the warning.
Jingchun Wang Ketuo Zhou Binghao Jiang Junnan Yu