A breastpump comprising a breastshield ( 3 ) having a portion ( 31 ) within which a woman's breast is received for the expression of milk, a source of pressure ( 10 ) in communication with said breastshield ( 3 ) and means for transcutaneous electrical nerve stimulation (TENS) ( 11 ) of the woman. The invention enables a stimulation of the mother's breast in order to activate the milk ejection reflex.