https://tribupitusa.com/categoria-producto/crianza/lactancia-y-posparto/extractores-y-colectores/

As the name suggests, a breast pump is a useful device for extracting breast milk from the mother's breasts. It is ideal when it comes to continuing with a regular supply of breast milk so that the baby can continue to feed with it, either at home, or in the nursery itself, or when the mother is not available.