Patent ID: 11951239
Assignee: GUANGZHOU TALONG TECHNOLOGY CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. The detachable breast pump according to claim 1, wherein the flowing channel unit (300) comprises a three-way valve (31), a breast flange (32) and a duckbill valve (33); the three-way valve (31) is formed thereon with a vent channel (301), a liquid inlet (302) and a liquid outlet (303) respectively; the three-way valve (31) has the breast flange (32) fixed thereon and is communicated with the breast flange (32) through the vent channel (301); the breast flange (32) is detachably connected to the variable pressure chamber (11); the liquid outlet (303) of the three-way valve (31) is provided with the duckbill valve (33); and the liquid inlet (302) of the three-way valve (31) is communicated with the outside.