Patent ID: 9724454
Date: 2017-08-08
CPC Classifications: A61M

Claim:
1. A manual breast pump having an accommodating vessel for storing breast milk, a breast pump main body attached to and detached from the accommodating vessel, and a manual operating section attached to the breast pump main body and deforming a negative pressure generating member installed on the breast pump main body, wherein: the breast pump main body has an enlarged-diameter milk expressing section having an enlarged diameter for abutting against a user's breast; the negative pressure generating member comprises: the manual operating section is a long handle and comprises: the extending section further comprises a plurality of engaging sections along the direction extending the extending section; each of the engaging sections having a large diameter section having a large axis diameter and a small diameter section having a small axis diameter; and the engagement structure of the manual operating section comprises a small-diameter through hole and a large-diameter through hole having larger diameter which is formed to lead to the small-diameter through hole, when the handle swings in one direction, the small-diameter through hole of the engagement structure is attached to the large diameter section of the extending section, when the handle further swings in the one direction, the extending section tilts toward the large-diameter through hole, causing the large diameter section to penetrate through the large-diameter through hole, the extending section which tilts being defined as in a tilt status, when the handle further swings after the large diameter section penetrates through the large-diameter through hole, the small-diameter section of the extending section penetrates through the large-diameter through hole, after the penetration of the small-diameter section, the extending section recovers from the tilt status, and the small-diameter through hole of the engagement structure is engaged with the small diameter section of the extending section.