BREAST PUMP Russian patent published in 2016 - IPC A61M1/06 

FIELD: medicine.

SUBSTANCE: invention relates to medical devices. Breast pump comprising first pressure chamber, second pressure chamber and actuator is arranged in such a fashion so as to hydraulically separate the two chambers. Actuator is made movable in order to create a reverse pressure gradient in second chamber to create when a pressure gradient in the first pressure chamber is created or the pressure gradient in the first pressure chamber is reset. Actuator comprises first piston member and second piston member. Diameter of first piston element is greater than that of the second piston member. First pressure chamber is located between first piston member and second piston element.

EFFECT: invention makes it possible to increase the number of drained milk and increase the comfort of the user.

11 cl, 6 dwg