A nipple device for electronically measuring flow of milk drawn by an infant through its feeding orifices. The device measures milk flow from the differential pressure generated by the milk flow through a fluid flow resistor. The resistor may be located in the peripheral region of the base of the nipple device, and milk conveyed to and from the resistor by means of passageways in the base unit. The differential pressure generated across the resistor is measured using pressure sensors located at the periphery. The pressure sensors and associated electronic circuits may be incorporated into a flow measuring head, attachable to the base unit of the device through a standard pair of fluid ports, to which can be attached heads for other measurements of the milk properties. Other implementations provide increased accuracy for nipple devices using the pressure difference across the feeding orifices for the flow measurement.

A hygienic oral feed-bottle nipple includes an opening skirt to expand and rotate in the buccal vestibule. As the child completes the suckling cycle, the mouth portion is distorted, the skirt extended to provide cleaning, stimulation, and a bumper to deny extensive pronation. The flanges and skirt may be covered with a textured surface, or bristles, that provide mechanical brushing of oral surfaces. Hard pads set along a superior surface of the nipple are compressed against the maxilla palate and provide upwards and/or lateral force to encourage lateral expansion of the palate. The nipple may be bifurcated into left and right opposing lobes which can split laterally to enhance lateral force on maxilla.