Abstract: A lid assembly including a housing and a pulverizing device. The housing has a center axis and is adapted to close and seal a cup body of the blender. The pulverizing device is arranged in the housing and includes a pulverizing knife assembly and a driver configured to drive the pulverizing knife assembly to rotate. A rotation axis of the pulverizing knife assembly is offset from the center axis of the housing. The pulverizing knife assembly includes an upper knife, a lower knife, and an intermediate knife disposed between the upper knife and the lower knife, and the upper knife, the lower knife, and the intermediate knife are stacked in an axial direction. The intermediate knife comprises a first blade and a second blade extending in a radial direction, the first blade being inclined upwardly and the second blade being inclined downwardly.

Abstract: The present invention discloses a hands-free wearable breast pump which includes: a main pump body, a milk reservoir, a tee piece, an airbag and a duckbill valve.