Gravity Feeding Device With Hydrophobic Filter And Pump
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Solution Overview
Problem
Current methods for feeding liquid nutrients to hospitalized infants, such as syringe pumps and gravity-fed systems, are prone to contamination and clogging issues due to the need for manual handling and exposure, leading to potential spillage and inefficiencies in nutrient delivery.
Innovation Solution
A gravity feeding device with a fluid chamber and a cover that allows air entry to prevent vacuum formation, equipped with a hydrophobic filter to prevent spills and a built-in or external pump mechanism to clear clogs by increasing pressure, using a diaphragm or aspiration bulb for easy unclogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the barrel is uncovered to allow gravity flow of liquid nutrients, then the feeding process is simple and continuous, but the possibility of spillage or contamination increases
Solution Approach 1:
The patent introduces a hydrophobic filter as an intermediary component between the liquid nutrients and the external environment. The filter allows air molecules to pass through freely while blocking liquid nutrients and contaminants, enabling the barrel to remain covered while maintaining gravity-driven flow. This resolves the contradiction by providing both protection against spillage/contamination and continuous feeding capability.
Solution Approach 2:
The hydrophobic filter functions as a thin film barrier that selectively permits gas transmission while preventing liquid passage. This flexible membrane allows the system to maintain a closed barrel configuration for safety while still enabling the necessary air-liquid interaction for gravity flow, thus addressing both the ease of operation and contamination prevention requirements.
2Reliability
If the plunger is reinserted to increase air pressure and unclog the outlet, then the clog is cleared, but the process takes time and increases spillage or contamination possibility
Solution Approach 1:
The patent extracts the clog-clearing function from the plunger mechanism and implements it through a separate pump system connected to the fluid chamber. This allows pressure to be applied independently without requiring plunger reinsertion, enabling faster clog clearance while maintaining the covered barrel configuration, thus reducing both time loss and contamination risk.
Solution Approach 2:
The pump system is pre-configured and connected to the fluid chamber, allowing immediate pressure application when clogging occurs. This preliminary preparation eliminates the need for time-consuming plunger reinsertion and manual manipulation, enabling rapid response to clogs while keeping the system closed and protected.
3Productivity
If the through hole is uncovered to allow air entry, then vacuum formation is prevented and liquid flow continues, but liquid nutrients may spill during accidental droppage or inversion
Solution Approach 1:
The hydrophobic filter is a porous material with pore sizes that allow gas molecules to pass through while blocking liquid nutrients. This porous structure enables continuous air entry to prevent vacuum formation and maintain gravity-driven flow, while simultaneously preventing spillage during accidental droppage or inversion of the device.
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 device ensures efficient, contamination-free delivery of liquid nutrients by preventing vacuum formation and easily clearing clogs, reducing the risk of spillage and maintaining sterility, thus improving the feeding process for infants.
Implementation Method 1
A hydrophobic filter may be disposed over the through hole to allow the air molecules to pass into the fluid chamber yet prevent the liquid nutrients from spilling during accidental droppage or inversion of the infant feeding device
Implementation Method 2
When the system is clogged, a pump may increase pressure within the fluid chamber to push the particulate clogging the system out of the infant feeding device or the enteral feeding tube
Implementation Method 3
an upper opening for introducing air molecules into the fluid chamber so that the liquid nutrient can flow out of the reduced size throat by way of gravity
Data Source
AI summary
A gravity fed infant feeding device is disclosed. The gravity feeding device may have a cover with a through hole that allows liquid nutrients within the infant feeding device to be fed to an infant by way of gravity. If the infant feeding device clogs up, then either an integrated pump or a separate pump may be applied to the infant feeding device to increase pressure and push out the clog from the system. the through hole may be covered with a hydrophobic filter to allow air to pass there through and allow the feeding of the infant by way of gravity yet liquid nutrients within the infant feeding device cannot escape or be contaminated during use.