An example vacuum motor device for facilitating milk extraction from a breast of a user can include: a first chamber; a second chamber coupled to the first chamber; and a voice coil motor configured to cause air to flow into the second chamber and out of the first chamber during a breast pumping cycle to create suction for extracting the milk.

There is provided a method of measuring liquid volume in a sealed container of a breast pump of known volume comprising liquid and gas. The method includes a measurement phase, measuring the volume of gas in the container by changing a first parameter of the gas by a known amount. The method also includes measuring a change in a second parameter of the gas; calculating the volume of gas in the container using the measured change and a predetermined operation equation; and determining the volume of liquid in the container based on the calculation.

An in-bra wearable breast pump is provided. The breast pump includes an air pump system for generating a base level vacuum and a pumping vacuum, a breast shield for receiving a user's breast and having a first side and a second side, a first channel for drawing the base level vacuum on the first side of the breast shield, and a second channel for drawing the pumping vacuum on the second side of the breast shield.

The present disclosure provides a wearable breast pump, including a host machine, a cup and a flowing channel unit. The host machine includes a variable pressure chamber. The cup is detachably connected to the host machine through the variable pressure chamber. The flowing channel unit is detachably arranged inside the cup and separates an internal space of the cup into a flowing channel and a milk storage bowl. The flowing channel is communicated with the variable pressure chamber, the milk storage bowl and the outside. The wearable breast pump has the flowing channel unit arranged inside the cup, achieving structural optimization, whereby making the structure more concise and the shape more beautiful, as well as increasing the integration level and reducing the occupied space.

There is provided a method of measuring liquid volume in a sealed container of a breast pump of known volume comprising liquid and gas. The method includes a measurement phase, measuring the volume of gas in the container by changing a first parameter of the gas by a known amount. The method also includes measuring a change in a second parameter of the gas; calculating the volume of gas in the container using the measured change and a predetermined operation equation; and determining the volume of liquid in the container based on the calculation.

The present disclosure provides a milk distribution system, components thereof, and methods of use thereof.

Systems for expressing milk from a human breast are provided herein. Such systems can include a compression device having multiple fingers configured to at least partially surround a breast and apply pressure to a major portion of a breast without applying pressure to a remainder portion, thereby activating milk ducts within the breast. The fingers can be configured to apply pressure to an inferior portion and one or more lateral portions of the breast, without applying direct pressure to a superior portion. The fingers can be configured to apply pressure to a superior portion and one or more lateral portions of the breast, without applying direct pressure to an inferior portion. The fingers of the compression device can be configured to apply pressure to a superior portion, an inferior portion, and a first lateral portion of the breast, without applying direct pressure to a second lateral portion of the breast.

The present invention relates to a breast shield arrangement (1) for a breast pump (2) comprising: a breast shield (3) for receiving a user's breast therein, and a sensor (4) for transmitting an input signal into the breast and receiving a corresponding reception signal in response, said reception signal indicating changes in milk flow in the breast.

The present disclosure provides a milk distribution system, components thereof, and methods of use thereof.

The present invention introduces a breast milk collection device with a first shell, a second shell, and a membrane. The first shell has a milk suction passage and a milk accumulation chamber with an opening. The second shell is connected to the first shell and has a fixing seat. The membrane includes a negative pressure diaphragm and an annular one-way valve diaphragm connected to its outer edge. The membrane is adjustable, the negative pressure diaphragm tightly seals the milk suction passage, and the one-way valve diaphragm can block the opening. A negative pressure cavity forms between the negative pressure diaphragm and the second shell. The breast milk collection device features a durable, simple, and easily assembled one-way valve for efficient breast milk collection.