Infant Nipple Radially Offset Teat for Liquid Pooling
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Solution Overview
Problem
Modern, wide-necked feeding bottles suffer from liquid pooling in the teat and bottle, leading to an increased risk of air ingestion by infants due to improper filling and deformation of the teat, which is prone to collapse.
Innovation Solution
A nipple with a radially offset teat portion and an aligned inner surface provides a substantially flat flow surface, minimizing pooling by ensuring the teat is filled with liquid during feeding, and an offset valve is positioned to avoid interference and deformation, with a screw ring configuration that maximizes the teat offset and aligns with the bottle's flattened profile for efficient liquid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wide-necked bottle is used to maximize teat offset, then the teat can be positioned closer to the bottle wall to improve liquid flow, but liquid pooling occurs in the teat and bottle leading to air ingestion
Solution Approach 1:
The nipple is designed with an asymmetric configuration where the teat portion is radially offset from the central axis of the nipple. This asymmetric positioning creates a specific flow path that prevents liquid pooling by ensuring liquid flows directly to the teat opening without accumulating in the domed portion, thereby eliminating air ingestion while maintaining wide-necked bottle compatibility
Solution Approach 2:
The invention introduces a radial offset dimension to the traditional axial symmetry of nipples. By positioning the teat portion at a radial distance from the centerline and creating a flattened flow surface at this offset position, the design adds a spatial dimension to liquid flow that prevents pooling and ensures continuous liquid supply to the teat opening
2Ease of operation
If the teat portion is made soft and flexible to provide a breast-like feel, then the nipple is more comfortable for infants, but the dome becomes too easily deformed and prone to collapse
Solution Approach 1:
The nipple design applies different structural qualities to different regions: the teat portion maintains soft, flexible material properties for comfort and breast-like feel, while the domed portion incorporates a flattened flow surface and offset geometry that provide structural support and resistance to collapse. This local differentiation allows each region to optimize its specific function without compromising the other
Solution Approach 2:
The nipple is segmented into functionally distinct regions: a domed portion for structural support and liquid reservoir, and an offset teat portion for infant feeding. The flattened flow surface acts as a transition zone between these segments, creating a structural reinforcement that prevents dome collapse while maintaining flexibility in the teat area
3Productivity
If the teat portion is offset radially to improve liquid flow, then pooling is reduced, but the valve may be interfered with or damaged by the infant
Solution Approach 1:
The valve is positioned asymmetrically on the nipple surface at a location that is radially offset from the teat portion in the opposite direction. This asymmetric dual-offset configuration ensures that the valve is spaced as far as possible from the teat portion, preventing infant interference with the valve while maintaining the liquid flow benefits of teat offset
Solution Approach 2:
The design utilizes the radial dimension of the nipple surface to position both the teat portion and valve at optimal locations. By distributing these components across different radial positions and angles, the invention creates sufficient spatial separation to protect the valve from infant damage while maintaining efficient liquid flow to the offset teat
Data Source
AI summary
A nipple for use with an infant drinking cup is disclosed herein. The nipple comprises a domed portion having a central region and an inner surface, a teat portion radially offset from the central region, and a radially-outer wall. The radially-outer wall is joined to the domed portion at a joining location and comprises an inner fluid-flow surface, defining a fluid flow direction. A region of the inner surface of the domed portion at the joining location is substantially parallel to said fluid flow direction, or the inner fluid-flow surface of the teat portion extends radially outwardly, away from said region of the inner surface of the domed portion at the joining location.