US Patent 11712500 Hands-free wearable breast pump

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. The main pump body is provided with a mounting cavity having an opening in a front end surface of the main pump body; the tee piece includes a first port, a second port for mounting the airbag and a third port for mounting the duckbill valve; the airbag is mounted to the second port; the duckbill valve is mounted to the third port; the milk reservoir is mounted to the tee piece or the main pump body; the duckbill valve is in fluid communication with the milk reservoir; the main pump body has at least one pushing and positioning structure formed in the mounting cavity; the tee piece is detachably mounted in the mounting cavity and abuts against the at least one pushing and positioning structure; and the tee piece is pushed upward by the at least one pushing and positioning structure to press an open end of the airbag tightly against a side wall of the mounting cavity. The hands-free wearable breast pump has the advantages of excellent sealing performance and convenient disassembly and assembly.