Wearable Breast Pump Vacuum Control for Quiet Leak-Resistant Expression
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Solution Overview
Problem
Existing breast pumps are often loud, prone to leakage, and do not produce high milk production efficiency, especially in portable or wearable designs.
Innovation Solution
A breast pump system with a self-contained, in-bra wearable design that maintains a constant base level vacuum throughout the pumping cycle using a closed loop system with two diaphragms and a three-way solenoid valve to ensure secure attachment and efficient milk expression, minimizing noise and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable wearable breast pump design is used, then mobility and discreetness are improved, but noise level increases and leakage becomes more common
Solution Approach 1:
The breast pump system is divided into separate functional modules: a wearable pump unit with vacuum generation capability, a separate breast shield assembly, and a milk collection container. This segmentation allows each component to be optimized independently, reducing overall noise while maintaining portability and minimizing leakage points through specialized sealing interfaces.
Solution Approach 2:
A valve mechanism acts as an intermediary between the vacuum source and the breast shield, controlling the flow of air and milk. This intermediary component regulates pressure cycles, prevents leakage by maintaining proper seals, and reduces noise by controlling the timing and intensity of vacuum application.
2Device complexity
If a wearable breast pump with integrated components is used, then device complexity is reduced, but milk production efficiency decreases
Solution Approach 1:
The breast pump employs dynamic pressure cycling, alternating between vacuum and atmospheric pressure phases, to stimulate milk ejection effectively. This dynamic operation, controlled by timed valve actuation, maintains high milk production efficiency despite the integrated wearable design by mimicking natural infant feeding patterns.
Solution Approach 2:
The pump operates in periodic cycles with distinct phases: vacuum application for milk extraction, pressure release for milk ejection, and brief intervals for breast recovery. This periodic action pattern, implemented through automated valve control, optimizes milk production efficiency while managing the constraints of a compact integrated system.
3Productivity
If a vacuum-based breast pump system is used, then milk expression efficiency is improved, but leakage and discomfort increase
Solution Approach 1:
A sealing interface is established between the breast shield and breast tissue before vacuum application begins. This preliminary sealing action prevents leakage by ensuring proper contact and seal integrity prior to the harmful effects of vacuum pressure, while also preparing the breast for comfortable operation by distributing pressure evenly from the start.
Solution Approach 2:
The vacuum is applied periodically rather than continuously, with cycles of vacuum application followed by pressure release phases. This periodic action maintains high milk expression efficiency during vacuum phases while reducing discomfort and preventing leakage during release phases, creating a balanced operation that addresses both productivity and comfort requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides a quiet, efficient, and hygienic milk expression experience by maintaining a constant negative air pressure, reducing leakage, and enhancing milk production efficiency while being discreet and easy to clean.
Implementation Method 1
a three-way solenoid valve to ensure secure attachment and efficient milk expression
Implementation Method 2
maintains a constant base level vacuum throughout the pumping cycle using a closed loop system
Implementation Method 3
a closed loop system with two diaphragms and a three-way solenoid valve
Data Source
AI summary
An in-bra wearable breast pump is provided. The breast pump includes an air pump system for generating a base level vacuum and a pumping vacuum, a breast shield for receiving a user's breast and having a first side and a second side, a first channel for drawing the base level vacuum on the first side of the breast shield, and a second channel for drawing the pumping vacuum on the second side of the breast shield.