Patent ID: 11969744
Assignee: SHENZHEN BONA PHARMA TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 10:
11. The sterile spray pump as in claim 7, wherein the one-way valve assembly (90) comprises a valve port (901) opened on the secondary piston (50), a valve seat sealing surface (902) provided at an inner side of the valve port (901) and on the secondary piston (50), and a valve core (903) mounted in the secondary piston (50) in a vertically movable manner, wherein the valve port (901) communicates with the spray channel (140); wherein when the secondary liquid suction cavity (501) is not filled with liquid, the valve core (903) is in sealing connection with the valve seat sealing surface (902), and the valve core (903) blocks the valve port (901) from the secondary liquid suction cavity (501); wherein when the secondary liquid suction cavity (501) is filled with liquid, the valve core (903) moves upwards, and the valve port (901) communicates with the secondary liquid suction cavity (501).