Composite Safety Toothbrush with Flexible Handle
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Solution Overview
Problem
Conventional toothbrushes are not suitable for prison and hospital settings due to their potential to be used as weapons, and existing safety toothbrushes with flexible handles are awkward to use and have poor bristle retention, leading to ineffective cleaning and dental hygiene issues.
Innovation Solution
A composite toothbrush design featuring a rigid inner core with bristle holes made from a first material, surrounded by a pliable flexible material on all sides except for pin connectors, and a flexible handle made from the same material, allowing the toothbrush to be bent into shapes like 'L' or 'C', without using glue for bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional rigid toothbrush is used, then effective teeth cleaning is achieved, but the toothbrush can be fashioned into a weapon causing harm
Solution Approach 1:
The patent changes the physical parameter of handle rigidity from rigid to flexible, making the handle bendable into L or C shapes. This flexibility prevents the toothbrush from being used as a weapon while maintaining effective teeth cleaning capability through proper bristle design and head configuration.
Solution Approach 2:
The toothbrush incorporates a composite structure with a flexible handle made from specific materials that provide both flexibility and durability. The handle material is engineered to be soft enough to prevent weaponization but sturdy enough to withstand repeated use and maintain structural integrity during brushing.
2Object-affected harmful factors
If a flexible handle toothbrush is used to prevent weaponization, then safety is improved, but the toothbrush becomes awkward to use with poor bristle retention
Solution Approach 1:
The patent uses a composite material system where the flexible handle is made from a specific polymer formulation that provides optimal balance between flexibility and bristle retention. The material properties are engineered to maintain sufficient friction and structural support to keep bristles securely attached while allowing the handle to bend for safety.
Solution Approach 2:
The toothbrush design applies different material properties to different parts: the handle is made highly flexible for safety, while the head and bristle attachment area maintain higher structural integrity and friction to ensure reliable bristle retention. This localized differentiation of material properties solves both requirements simultaneously.
3Object-affected harmful factors
If a very short handle toothbrush is used to prevent weaponization, then safety is improved, but the toothbrush is awkward to grasp and use
Solution Approach 1:
Instead of reducing handle length, the patent changes the handle's flexibility parameter, allowing it to be of standard length for comfortable grasping while being soft and bendable to prevent weaponization. The flexible material enables the handle to deform under pressure rather than function as a rigid shank.
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 composite toothbrush provides improved structural integrity, bristle retention, and ease of use, making it safer and more effective for cleaning in restricted environments while preventing misuse as a weapon.
Implementation Method 1
a rigid inner core having a plurality of bristle holes for retention and holding a plurality of toothbrush bristles
Implementation Method 2
a pliable flexible material substantially or entirely surrounding the rigid inner core
Data Source
AI summary
A composite head safety toothbrush is disclosed. The toothbrush apparatus detailed herein employs a composite head made from a rigid inner polymer material and a softer thermoplastic material surrounding the inner material. The softer material provides safety for prison toothbrush applications as well as elderly and patient care where care givers may brush the teeth of a patient. Innovative pin connectors in the inner toothbrush head assist in the composite formation. The toothbrush solution herein further importantly provides for a toothbrush having a flexible handle.