Aerosol Restrictor Baffles for Toothbrush Hygiene
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Solution Overview
Problem
Toothbrushes stored in bathrooms are exposed to aerosolized droplets from plumbing fixtures and user actions, potentially contaminating the toothbrush with unsanitary substances, and existing solutions fail to effectively prevent this while allowing moisture to evaporate or drain.
Innovation Solution
A toothbrush case with an 'Aerosol Restrictor' featuring baffles with spikes and indents that trap aerosolized droplets, preventing them from entering the case while allowing moisture to evaporate and drain, combined with a design that keeps the toothbrush upright for easy cleaning and uses antimicrobial materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a toothbrush is left open to air drying, then moisture can evaporate, but aerosolized droplets can contaminate the toothbrush
Solution Approach 1:
The patent introduces an aerosol restrictor as an intermediary component between the external bathroom environment and the toothbrush storage case. This restrictor allows moisture vapor to pass through while blocking aerosolized droplets, serving as a selective mediator that permits beneficial evaporation while preventing harmful contamination.
Solution Approach 2:
The aerosol restrictor features localized structural variations with hydrophobic regions and hydrophilic regions. The hydrophobic portions repel aerosol droplets while the hydrophilic portions allow moisture vapor transmission, creating local quality differences that enable selective permeability based on the physical state and composition of the fluid.
2Object-affected harmful factors
If a toothbrush is covered to protect from droplets, then contamination is reduced, but moisture cannot evaporate and mold can grow
Solution Approach 1:
The aerosol restrictor is designed with a porous structure containing numerous pores of specific size ranges. These pores are sized to allow small moisture vapor molecules to pass through while blocking larger aerosolized droplets, enabling selective permeability based on particle size differences.
Solution Approach 2:
The restrictor functions as a thin film barrier with specific surface properties that selectively interact with different phases of water. The film structure allows vapor phase transmission while blocking liquid droplet phase, creating a flexible yet effective separation mechanism.
3Object-affected harmful factors
If the case is completely sealed, then droplet entry is prevented, but moisture accumulation occurs
Solution Approach 1:
The aerosol restrictor is segmented into multiple functional zones including hydrophobic regions, hydrophilic regions, and varying pore density areas. This segmentation allows different portions of the restrictor to handle different aspects of moisture management, with some areas blocking droplets and other areas facilitating vapor transmission.
Solution Approach 2:
The restrictor utilizes dynamic surface properties that respond to the phase and size of water molecules. The material exhibits different permeability characteristics depending on whether the incoming fluid is in vapor form (allowing passage) or liquid droplet form (blocking passage), creating a dynamic filtering mechanism.
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
Effectively prevents contaminated aerosolized droplets from reaching the toothbrush, maintaining hygiene by allowing moisture to evaporate and drain, while keeping the toothbrush clean and dry, and embedding antimicrobial materials to combat bacteria.
Implementation Method 1
The 'Aerosol Restrictor' is used in a toothbrush holder, in a way that prevents aerosolized liquid from reaching the toothbrush in the holder
Implementation Method 2
When moisture evaporates it turns to a gas (0.10 microns and smaller). The gas from the evaporating liquids inside the container float past the Aerosol Restrictor
Implementation Method 3
Droplets from coughing and sneezing range in size from 0.35 to 10 microns and are large enough where most of them fall downward
Implementation Method 4
embedding antimicrobial materials to combat bacteria
Data Source
AI summary
A toothbrush holder which has a case having an inside portion adapted and sized for holding a toothbrush in the inside portion. The bottom portion of the case having at least one opening enabling liquids to drain from an inside the case. The top portion of the case having an aerosol restrictor, which allows liquid from the inside of the case to evaporate through openings in the aerosol restrictor, but which prevents aerosolized liquids from an outside of the case from reaching the inside of the case. The aerosol restrictor includes multiple inwardly facing baffles, each baffle blocking a portion of an opening on the top portion of the case, and the multiple baffles collectively blocking any direct path for aerosolized droplets between an outside of the case and the inside of the case. Each baffle includes an upwardly facing spike which forms a high point of the baffle reaching towards a top of the case and a downwardly facing indent which forms a low portion of the baffle.