One-way valve for breast pump

By designing a one-way valve that combines a flexible silicone sheet-shaped seal with a tongue-shaped component, the problem of easy aging and breakage of the one-way valve in breast pumps was solved, achieving effective control of milk flow and improved lactation efficiency.

CN224523691UActive Publication Date: 2026-07-21DONGGUAN RONGMAO MEDICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN RONGMAO MEDICAL TECHNOLOGY CO LTD
Filing Date
2025-03-27
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The one-way valves of existing breast pumps are prone to aging and cracking, leading to air leakage and an inability to form effective negative pressure in the lactation chamber, which affects lactation and causes milk backflow.

Method used

The sheet-shaped sealing part, made of flexible silicone, is designed to be combined with a tongue-shaped part. It opens the milk outlet under positive pressure through elastic deformation and restores the seal under negative pressure. The combination of the inclined milk outlet and the spherical arc surface enhances the sealing effect.

Benefits of technology

It achieves an effective seal between the lactation chamber and the milk storage chamber, preventing milk backflow, ensuring negative pressure in the lactation chamber, improving lactation efficiency, and extending service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224523691U_ABST
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Abstract

The utility model provides a kind of one-way valve special for breast pump, the breast pump is equipped with a partition wall for separating milk storage room and lactation cavity, located in the milk storage room, the partition wall is equipped with milk outlet, the one-way valve is flexible silica gel with elasticity, one end is sheet-shaped sealing part, the sheet-shaped sealing part is attached to the partition wall and seals covers the milk outlet.The one-way valve special for breast pump of the utility model, the positive pressure in lactation cavity pushes off sheet-shaped sealing part and opens milk outlet, milk in lactation cavity flows into milk storage room through milk outlet, when lactation cavity is negative pressure, one-way valve restores original shape under the action of elasticity, sheet-shaped sealing part seals milk outlet, thereby isolating lactation cavity and milk storage room, prevent milk backflow, and make lactation cavity closed.
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