Self-threading Helical Cleaning Implement for Interproximal Debris Extraction
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Solution Overview
Problem
Conventional interproximal cleaning tools, including automated systems, often push debris below the gum and struggle to reconcile the need for a fine, resilient probe that can access small crevices without collapsing, while also being gentle on gum tissues, making them inefficient and difficult for users with dexterity issues to use.
Innovation Solution
A teeth-cleaning apparatus with a cylindrical cleaning implement featuring a flexible composite structure, including a resilient support shaft and a helical thread that self-threads into interproximal spaces, combined with a rotating mechanism and vacuum assistance to extract debris, addressing the need for both strength and flexibility, and accommodating users with limited dexterity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a very fine resilient probe (less than 0.5mm diameter) is used to access small crevices, then the ability to reach restricted areas is improved, but the probe easily crumples or collapses when compressed during insertion
Solution Approach 1:
The cleaning implement uses a composite structure combining a resilient support shaft with a helical cleaning thread. The support shaft provides structural strength and rigidity to prevent collapse during insertion, while the helical thread performs the cleaning function. This composite design allows the implement to maintain both fine dimensions for accessing small crevices and sufficient strength to withstand compression forces.
2Strength
If the cleaning implement is made stronger and harder to prevent collapse, then structural integrity is improved, but the implement becomes less flexible and may damage gum tissues
Solution Approach 1:
The implement features localized resilience at the working end where the helical cleaning thread is positioned. The support shaft may have varying structural properties along its length, with the distal portion being more flexible to conform to gum contours and reduce tissue damage risk, while maintaining sufficient strength to prevent collapse. This gradient in mechanical properties allows the implement to be both strong and gentle.
3Ease of operation
If conventional cleaning tools are used, then interproximal cleaning is achieved, but debris is pushed below the gum rather than removed
Solution Approach 1:
Instead of pushing debris forward and downward like conventional tools, the helical cleaning thread rotates and draws debris backward toward the exterior of the mouth. The helical geometry converts rotational motion into axial withdrawal motion, effectively pulling debris out from between the teeth and gums rather than forcing it deeper into the periodontal space.
4Measurement precision
If manual dexterity is required for using cleaning tools, then cleaning precision may be improved, but users with dexterity issues such as Multiple Sclerosis or arthritis find such use difficult
Solution Approach 1:
The cleaning implement is designed to be self-positioning through its self-threading helical structure. When rotated, the helical thread automatically engages with the interproximal space and guides the implement into the correct position between teeth, reducing the need for precise manual positioning by the user. This self-guiding mechanism makes the tool accessible to users with limited dexterity while maintaining cleaning effectiveness.
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 apparatus effectively removes biofilm and debris from interproximal spaces without pushing them below the gum, providing efficient and reliable cleaning, even in restricted areas, and is designed to be user-friendly for individuals with dexterity challenges.
Implementation Method 1
a vacuum pump arranged to create a negative pressure in the interproximal space of a user
Implementation Method 2
a cylindrical cleaning implement... configured to rotate about its longitudinal axis
Implementation Method 3
removal of bio-film from user's teeth
Data Source
Figure 1
Figure 2
Figure 3~7
AI summary
Teeth cleaning apparatus comprises a cylindrical cleaning implement. The cleaning implement includes a resilient support shaft and an engagement thread and is drivingly rotatable. The implement is so configured that, when presented between a pair of adjacent teeth, a rotating implement threads itself into the interproximal space and extracts interproximal debris.