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

Claim 6:
7. The sterile spray pump as in claim 1, further comprising a spray nozzle (70) fixed in the spray head (40), a sealing valve (80) mounted between the spray nozzle (70) and the secondary piston (50) in a vertically movable manner, and a one-way valve assembly (90) disposed at an upper end of the secondary liquid suction cavity (501); wherein the spray head (40) includes a spray port (402), a spray channel (140) is formed between the secondary piston (50), the spray head (40), the sealing valve (80) and the spray nozzle (70), and the one-way valve assembly (90) is configured to communicate the spray channel (140) with the secondary liquid suction cavity (501) or block the spray channel (140) from the secondary liquid suction cavity (501); when the spray channel (140) is not filled with liquid, a space between the spray nozzle (70), the spray head (40) and the sealing valve (80) is sealed to block the spray channel (140) from the spray port (402); and when the spray channel (140) is filled with liquid, the sealing valve (80) moves downward to make the spray channel (140) communicate with the spray port (402).