ADJUSTABLE-BUFFER PISTON PUMP Russian patent published in 2016 - IPC A61M1/06 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical equipment. A breast-pump assembly comprises a vacuum pump actuated for cyclic generation of negative pressure in an enclosed volume; a breast compartment configured to encase female's breast, from which milk is expressed; and a buffer cavity. The buffer cavity is connected to the vacuum pump and the breast compartment so that using the vacuum pump actuates the cyclic generation of negative pressure inside the buffer cavity and breast compartment. The buffer cavity is configured changeable so that the pressure inside the breast compartment generated by the vacuum pump, i.e. amplitude of the negative pressure generated inside the breast compartment is adjustable by controlling the buffer cavity when in use.

EFFECT: providing more simple design and facilitating breast-pump assembly control.

15 cl, 4 dwg