Abstract: New devices for providing an indication to a nursing mother as to whether a baby is receiving milk during a breastfeeding session. Milk expressed from the mother's breast is caused to flow through a transparent passageway part of a nipple shield, disposed in in a position where it visible to the mother or a third party, before being supplied to a nipple of the device, from which the baby is enabled to suck. The device therefore provides an indication that the infant is receiving milk from the mother's breast. The visibility of the passageway is achieved by routing the passageway through a region of the device whose line of sight with the mother is not obscured by the baby when feeding, such as towards the periphery of the base layer of the device. The device passageway may also comprise a valve, and details of such valves are disclosed.

Abstract: A system for measuring fluid intake by a sucking baby. The system includes: a feeding pathway for fluid flow from the fluid source to the baby's mouth, wherein the feeding pathway has a first opening in communication with the fluid source and a second opening in communication with the baby's mouth; and an indicator pathway for indicating the amount of fluid provided to the baby's mouth through the feeding pathway, wherein the indicator pathway has a first opening in communication with the fluid source and a second opening in communication with the baby's mouth. The amount of fluid drawn into the indicator pathway is indicative of the amount of fluid drawn into the feeding pathway.

Abstract: A system for measuring fluid intake by a sucking baby. The system includes: a feeding pathway for fluid flow from the fluid source to the baby's mouth, wherein the feeding pathway has a first opening in communication with the fluid source and a second opening in communication with the baby's mouth; and an indicator pathway for indicating the amount of fluid provided to the baby's mouth through the feeding pathway, wherein the indicator pathway has a first opening in communication with the fluid source and a second opening in communication with the baby's mouth. The amount of fluid drawn into the indicator pathway is indicative of the amount of fluid drawn into the feeding pathway.