Insulating Barrier for Flexible Oral Care Electrodes
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Solution Overview
Problem
Existing oral care devices with flexible RF emitters for generating electromagnetic fields are prone to short-circuits due to mechanical deformation and abrasive wear, posing safety hazards and reducing mechanical cleaning efficiency.
Innovation Solution
A cleaning and/or treatment unit with a support body and electrodes that include a physical or electrically insulating barrier to prevent physical contact between exposed conductive elements, thereby preventing short-circuits and ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flexible emitters are used for RF field generation, then mechanical cleaning efficiency is improved by maintaining surface area, but short-circuit risk increases due to mechanical deformation and abrasive wear
Solution Approach 1:
An electrically insulating barrier is introduced as an intermediary element between adjacent flexible electrodes. This barrier prevents direct electrical contact between electrodes while allowing the electrodes to maintain their flexible, exposed configuration for effective RF field generation and mechanical cleaning. The barrier acts as a mediator that resolves the conflict between electrode flexibility and electrical isolation.
Solution Approach 2:
The electrically insulating barrier is implemented as a thin film or shell structure that conforms to the flexible nature of the electrodes. This thin insulating layer provides electrical isolation without significantly impeding the mechanical flexibility or surface area of the electrodes, allowing them to deform and bend during oral care operations while maintaining electrical separation.
2Power
If electrodes are exposed for RF emission, then RF field generation effectiveness is improved, but safety hazard increases due to potential harmful burns from short-circuits
Solution Approach 1:
The electrically insulating barrier serves as a safety intermediary that prevents harmful short-circuits between exposed electrodes. It allows the electrodes to remain exposed for effective RF field generation while blocking direct electrical contact that could cause harmful burns, thus mediating between power effectiveness and user safety.
Solution Approach 2:
The barrier converts the potential harmful effect of exposed electrodes (short-circuit risk) into a beneficial configuration where the insulating barrier itself becomes part of the electrode structure, providing both electrical isolation and mechanical support while allowing the electrodes to remain exposed for RF emission.
3Reliability
If barrier is added to prevent short-circuits, then safety is improved, but device complexity increases
Solution Approach 1:
The barrier is implemented as a thin film or shell that integrates with the electrode structure rather than being a separate bulky component. This minimizes the increase in device complexity while providing the necessary electrical isolation for safety.
Solution Approach 2:
The electrode assembly becomes a composite structure combining conductive electrode material with electrically insulating barrier material. This composite approach allows both functions (RF emission and electrical isolation) to be achieved in a single integrated component, reducing overall device complexity.
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 barrier effectively shields the electrodes from contact, preventing short-circuits and maintaining the mechanical cleaning efficiency while allowing for effective RF field generation, enhancing user safety and device performance.
Implementation Method 1
at least one barrier comprising one or more walls arranged to at least partially shield the exposed portion against physical contact
Implementation Method 2
when the RF field interacts with surfaces of the teeth and gums, it may change surface properties of surfaces in the mouth which may soften surface deposits such as plaque or dental calculus
Implementation Method 3
The RF emissions may also provide a treatment function through inducing a mild heating action in tissue
Data Source
AI summary
A shielding barrier (32) is carried by one or more electrodes (22) of a cleaning and/or treatment unit (12) for an oral care device, and arranged for interposing contact of an exposed conductive portion (25) of the electrodes (22) by other components or external objects. The shielding barrier is arranged such that the exposed conductive portion is still at least partially open to the environment surrounding the electrodes (22).