Spraying device for nasal cavity

By incorporating a one-way valve into the nasal spray device, the air inlet of the nasal pad allows air to enter but not exit, thus solving the problem of users' exhalation obstructing drug delivery and achieving a more efficient nasal drug delivery effect.

CN223641132UActive Publication Date: 2025-12-09ATSENBO (SUZHOU) PHARM TECH CO LTD
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Patent Information

Application Number
CN202422649217.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-12-09
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

When administering medication through the nasal cavity, the user's exhalation can obstruct drug delivery, affecting the spray's effectiveness. Furthermore, the exhaled airflow may carry droplets out of the air inlet, resulting in waste and a reduction in the effective supply.

Method used

The nasal spray device is designed with a one-way valve on the nose pad, which allows outside air to enter but prevents air in the flow channel from escaping. Inhalation through the nose pad propels the spray, and the one-way valve closes the air inlet during exhalation to ensure that the air pressure is greater than the outside air pressure and prevents droplets from being expelled.

Benefits of technology

Ensure that the spray effect is not affected by the user's exhalation, avoid droplet forward resistance and expulsion, and improve drug delivery efficiency and utilization.

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Abstract

The utility model relates to a spraying device for a nasal cavity, which comprises a spraying main body, a spraying head and a spraying head, the nose pad comprises a nose pad opening and an air inlet, a flow channel is formed between the nose pad and the spray body, and fog drops sprayed out of the nozzle sequentially pass through the flow channel and the nose pad opening to enter the nasal cavity; and the one-way valve is constructed to allow external gas to enter the flow channel through the gas inlet and not allow the gas in the flow channel to be discharged through the gas inlet. According to the spraying device, the nose pad is provided with the air inlet, and the one-way valve is arranged, so that only air can enter the air inlet of the nose pad, air can not exit from the air inlet, resistance encountered by fogdrops sprayed out of the nozzle due to expiration of a user is avoided, expired air flow is prevented from carrying part of the fogdrops to be discharged from the air inlet, and the spraying effect is ensured.
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