A Breast Pump (搾乳器, Sakunyū-ki) is a device designed to manually extract milk from a lactating breast by using suction to pull the breast nipple into a flange, and then release, in similar motion to suckling. Most breast pumps also possess a container to deposit the expressed milk.
The use of a breast pump can be for a variety of reasons. Many women use breast pumps to bottle feed their child. A breast pump may also be used to stimulate lactation for women with a low milk supply or those who have not just given birth. A breast pump may also be used to relieve breast engorgement, a painful condition whereby the breasts are overfull and must be emptied.
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- While it can be used as an alternative, the breast pump is not as efficient at removing milk from the breast as most nursing babies. This problem also exists in the Monster Musume manga series, as breast pumps or milking machines used by some Liminals who constantly produce breast milk without being pregnant, such as female Minotaurs (especially those with particularly large breasts like Cathyl), prove rather ineffective for everyday use since they cannot extract all of the milk from their breasts when milking.[1] For smaller Liminals who also produce breast milk daily without pregnancy, like Pans and presumably also Satyrs, however, breast pumps are more effective for everyday use, to the point that Merino was able to hide the fact that she also produce breast milk daily for a long time.[2]
- The Minotaur milking machine which can be called a breast pump on steroids has similarities to a typical milking machine but it's designed to be used on female minotaurs.[2]
- Alternatively, hand expression can be done manually.
- With the exception of their queens, female Honey Bee Liminals and Honeypot Ant Liminals use milking machines to express honey from their breasts so it might be possible for them to use breast pumps for private use too.[3] At least the Honey Bee Liminal workers in the Black Lily Innovations Research Laboratory use milk pumps to collect samples of their royal jelly and sell them to the company.[4]
- In Monster Musume Fantastic Life, Meamil's onsen pic is shown with the suction cups of a milking machine attached to her nipples.
- Dairy Breed Centaurs infamously lactate on a constant basis even when not pregnant, which starts the moment they hit puberty. Due to this, Meamil's daughter Felimil began carrying a duffle bag full of milking tools like empty pumps after hitting puberty, but since she doesn't know anything about the basics of milking due to a lack of experience, she can't milk herself properly with the breast pumps.[5]
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