Abstract：Objective To develop a medical infusion automatic bottle change device that was physical
principle controlled and was without power consumption so as to alleviate the workload of clinical
nurses. Methods Firstly, the advantages and disadvantages of each automatic bottle change device
guided by physical principle were analyzed. Then, the core principles of float valve control, locus control
and technical difficulties were found out. The function of relevant indicators of floating ball and float
valve chamber was deduced. Based on the derived results, suitable parameters including medical material
selection, shape and size of float valve, size of the valve chamber and each open position were decided
and final design was determined. Results Through modeling and verification float valve, functions like
liquid control, gas phase time-sharing and channeled infusion were realized. Conclusion The structure of
this automatic bottle change device controlled by float valve is simple. The cost of it is low. In addition, it
is easy to use, as well as safe and reliable. It provides a new solution for automatic bottle change device
of soft bag injection and the mixed infusion of soft bag and hard bottle.
刘玮，沈颖惠，邹进，黄谦，卜丹霞，张帆. 一种基于浮球阀门控制的自动换瓶装置研究[J]. 中国医疗设备, 2017, 32(4): 46-49.
LIU Wei, SHEN Ying-hui,
ZOU Jin, HUANG Qian,
BO Dan-xia, ZHANG Fan. Study of a Automatic Bottle Change Device Based on Float Valve Control. China Medical Devices, 2017, 32(4): 46-49.
