The Youha, Bebebao, and Yiyadodo electric breast pumps are single-user, powered breast pump intended to be used by lactating women to express and collect milk from their breasts. THE ONE, YH-8012, BB-5020 and YY-5030 have both single (pumping from one breast) and double pumping (pumping from both breasts) configurations. YY-8011 and YH-8019 have a single pumping configuration only. A reciprocating diaphragm vacuum pump, driven by a microprocessor, generates the suction to extract the milk at vacuum levels up to 280 mmHg. The user interface for the THE ONE, YH-8012, BB-5020 and YY-5030 models consists of a front panel keypad and LCD display or LED display in which the user switches between modes and controls the vacuum pressure. The YY-5030 model does not have any visual indicators on the pump housing.
A mains electricity (AC-powered) device used to extract milk from the breast, typically for collecting and feeding to an infant. The device produces a continuous low-grade suction through a funnel-like component that is applied to the breast; the milk collects in an attached vessel (e.g., a sterilized bottle). The device may have a safety mechanism to prevent a potentially harmful increase in negative pressure.