Breast pump system

A wearable breast pump system including:

• (a) a housing that encloses a rechargeable battery and a closed loop air pump and has a front surface that is shaped, in use, at least in part to fit inside a bra and to contact an inner surface of the bra and a rear surface that is shaped to contact, at least in part, a breast shield;
• (b) the breast shield including (i) a flange shaped to fit against a breast and (ii) a substantially transparent or optically clear, protruding nipple tunnel, shaped to receive a nipple, with a closed end section adjacent to a milk opening through which, in use, expressed milk flows under gravity;
• providing to the mother placing the breast shield onto her breast a clear and unobstructed view of the nipple when positioned inside the nipple tunnel, to facilitate correct nipple alignment;
• and where the flange and the nipple tunnel are a single, integral item, and the breast shield is insertable against, and removable from, the rear surface of the housing;
• (c) a flexible diaphragm that is seated against a diaphragm holder that is formed as a recess in the rear surface of the housing, the flexible diaphragm flexing in response to changes in air pressure caused by the closed loop
• air-pump to create negative air pressure in the nipple tunnel;
• (d) a rigid, re-useable milk container made of substantially transparent or optically clear material, and configured to be attachable to and removable from the housing.