Feeding Bottle Vent Assembly with Low-Pressure Duck-Billed Valve
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Solution Overview
Problem
Conventional feeding bottles experience negative pressure buildup during feeding, making it difficult for infants to feed, and existing solutions are complex, prone to choking hazards, and do not mimic natural feeding due to high venting pressures.
Innovation Solution
A feeding bottle with a vent assembly featuring a valve that opens at low negative pressures, incorporating a duck-billed or hemispherical valve with a reduced resilient closing force, allowing air to enter at pressures similar to natural feeding, and an anti-choke valve flange for mixing and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a valve is provided to allow air ingress for pressure equalisation, then the negative pressure buildup is alleviated, but the device complexity increases and cleaning difficulties arise
Solution Approach 1:
The valve assembly is integrated into the teat structure, merging the venting function with the feeding component. The valve body forms part of the teat assembly, eliminating separate complex vent tubes and reducing the number of discrete parts that require cleaning.
Solution Approach 2:
The valve assembly serves multiple functions: it provides pressure equalisation by allowing air ingress, prevents milk leakage through its one-way design, and the valve body itself acts as a mixing member when the infant sucks. This multi-functionality reduces the need for additional separate components.
2Device complexity
If no valves are provided for pressure equalisation, then the device complexity is reduced, but significant negative pressure builds up making feeding difficult
Solution Approach 1:
The valve is designed with a reduced resilient closing force compared to conventional valves. This parameter change allows the valve to open at lower negative pressures, enabling pressure equalisation to occur naturally during feeding without requiring the infant to suck excessively hard, thus maintaining ease of operation.
3Reliability
If the valve has high resilient closing force to prevent milk leakage, then liquid leakage is prevented, but the valve requires significant negative pressure to open for air venting
Solution Approach 1:
The valve's resilient closing force is specifically reduced from conventional levels. This parameter adjustment allows the valve to open at the low negative pressures that occur during natural infant feeding, while still maintaining adequate sealing to prevent milk leakage when closed.
Solution Approach 2:
The valve provides partial venting capability - it opens sufficiently to allow air ingress for pressure equalisation during normal feeding, but remains closed enough to prevent milk leakage. The reduced resilient force ensures it opens at appropriate pressures without requiring excessive suction from the infant.
4Reliability
If complex vent tubes with multiple parts are used for pressure equalisation, then pressure equalisation is achieved, but choking hazards increase due to small parts
Solution Approach 1:
The valve assembly is integrated into the teat structure, merging the venting function with the feeding component. This integration eliminates separate small vent tubes and parts, reducing the risk of choking hazards while maintaining pressure equalisation functionality.
Solution Approach 2:
The valve body is designed as a single integrated component rather than multiple separate parts. This segmentation approach consolidates the venting mechanism into one piece that cannot be accidentally detached or become a choking hazard, while still providing effective pressure equalisation.
5Device complexity
If the valve opens at high negative pressures, then the valve structure can be simpler, but the feeding process does not closely mimic natural breast feeding
Solution Approach 1:
The valve's resilient closing force is reduced to match the pressure characteristics of natural breast feeding. This parameter change enables the valve to open at the low negative pressures that occur during natural feeding, thereby mimicking the natural feeding process while maintaining a relatively simple valve structure.
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 solution enables natural feeding by reducing the pressure required for venting, minimizing choking hazards, and providing a simple modular design that closely mimics breast feeding while preventing liquid leakage.
Implementation Method 1
When the container is inverted the end of the air conduit portion projects above the level of the liquid and the liquid previously in the air conduit portion drains into the reservoir portion and sits below the end of the air tube. As a result an air passage is provided from the vent via the air tube into the reservoir portion and through the air conduit to the bottle such that pressure equalisation is provided when the infant drinks.
Implementation Method 2
A feeding bottle with a vent assembly featuring a valve that opens at low negative pressures, incorporating a duck-billed or hemispherical valve with a reduced resilient closing force, allowing air to enter at pressures similar to natural feeding
Data Source
AI summary
A feeding bottle (10) comprises a container (16), a teat (12) and a collar (14) to screw the teat (12) onto and seal the container (16). A vent assembly (18) is mounted between the teat (12) and the container (16) and includes a vent tube (22) passing down to a position close to the base of the container (16) and having a one way valve (34) allowing air to pass into the container (16) on application of suction to the teat (12) but preventing liquid flowing into the vent tube (22), together with a valve flange (36) acting as an anti-choke member.