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It has frequently occurred to me that a breast pump might be devised in which the suction is produced by water pressure. Such a pump could be used in any home by attaching it to a water faucet. The advantages of this water-power breast pump would obviously be its low cost and ease with which it could be carried about.
The first experiments with a water pump, conducted some three years ago, were unsatisfactory. It produces suction only, and, unlike the electric pump, there is no alternate back pressure which relieves the congestion in the nipple occurring during each suction impulse. As a consequence, the nipples became sore in our first experiment with the water-driven pump. Therefore the idea was temporarily abandoned. Subsequent tests have shown that a water-driven pump can be successfully used in conjunction with a suction-regulating device, when it is desired to promote the flow
Abt IA. WATER-DRIVEN BREAST PUMP. JAMA. 1926;87(4):240–241. doi:10.1001/jama.1926.92680040001009
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