RF Electrode Layout for Uniform High-Frequency Skin Treatment
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Solution Overview
Problem
The monopolar type high-frequency output devices experience a proximity effect where the high-frequency waves are biasedly distributed, reducing the skin improvement effect due to uneven current distribution among the RF electrodes.
Innovation Solution
A high-frequency output device with electrodes arranged in a specific pattern and controlled by a power source to apply currents of the same polarity in different directions, preventing the proximity effect and ensuring uniform distribution of high-frequency waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a monopolar type with multiple RF electrodes is used to treat larger skin areas, then the treatment area is expanded, but the proximity effect causes biased current distribution reducing treatment effectiveness
Solution Approach 1:
The base is divided into multiple independent electrode units (first electrode unit, second electrode unit, etc.) that can be independently controlled. Each electrode unit can receive current from the power source independently, allowing precise control over current distribution patterns and eliminating the proximity effect while maintaining large treatment area coverage.
Solution Approach 2:
Different electrode units are positioned at different locations on the base (e.g., first electrode unit at one end, second electrode unit at the other end). By controlling current application to specific electrode units, the system achieves uniform current distribution across different regions of the skin, addressing the proximity effect locally while maintaining overall treatment effectiveness.
2Area of stationary object
If RF electrodes are arranged in a cross-like manner for monopolar type, then the device can cover wider area, but magnetic field generation causes current offset and biased oscillation
Solution Approach 1:
The cross-like electrode arrangement is segmented into multiple independently controllable electrode units. Each unit can be controlled separately by the power source, allowing the system to maintain stable current distribution even when electrodes are arranged in a cross-like configuration for wide area coverage.
Solution Approach 2:
The power source is configured to supply current to multiple electrode units based on controlled patterns. This feedback mechanism ensures that current is distributed uniformly across the skin area, compensating for magnetic field effects and maintaining stable current distribution while achieving wide coverage.
3Device complexity
If unidirectional current is applied to multiple RF electrodes in monopolar type, then the device structure is simplified, but the proximity effect causes biased current flow toward edges or centers
Solution Approach 1:
The electrode system is segmented into multiple independently controllable units, allowing the power source to apply current in controlled patterns. This segmentation enables the system to maintain simple overall structure while achieving uniform current distribution by controlling each electrode unit independently.
Solution Approach 2:
The power source is configured to change current application parameters dynamically, supplying current to different electrode units in controlled patterns. This parameter control allows the system to maintain simple device structure while achieving uniform current distribution by adjusting current delivery parameters rather than changing the physical electrode arrangement.
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
Prevents the proximity effect, allowing for uniform application of high-frequency waves, enhancing skin treatment efficacy by maintaining consistent current distribution across the skin area.
Implementation Method 1
a power source (50) that supplies power to the first electrode (30) and the second electrode (40)
Implementation Method 2
As the high-frequency waves are delivered to the skin, coagulation necrosis of the skin is induced, so that collagen and elastic fibers of the skin are removed and new collagen and elastic fibers can be formed
Data Source
AI summary
A high-frequency output device includes: a handpiece; a base detachably coupled to the handpiece; a first electrode provided on the base and including at least one first unit electrode; a second electrode provided on the base and including at least one second unit electrode; and a power source configured to supply power to the first electrode and the second electrode.