RF Electrode Layout for Uniform High-Frequency Skin Output
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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 offset currents and magnetic fields generated by crossed RF electrodes.
Innovation Solution
A high-frequency output device with electrodes arranged in specific patterns, including a first electrode and a second electrode, where the second electrode is interposed between neighboring first electrodes, and currents of different polarities are applied in alternating or simultaneous patterns to prevent the proximity effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plurality of RF electrodes is arranged in a cross-like manner and a unidirectional current is applied, then the high-frequency waves can be applied to a wide area of the skin, but the current may be offset due to the magnetic field generated, causing the high-frequency waves to flow in a biased manner toward the edges or centers of the electrodes (proximity effect)
Solution Approach 1:
The patent applies asymmetry by arranging electrodes in a specific non-uniform pattern rather than a symmetric cross-like arrangement. The first and second electrodes are positioned at different locations and orientations to create an asymmetric electrode configuration that prevents magnetic field-induced current offset and eliminates the proximity effect, ensuring uniform high-frequency wave distribution across the treatment area.
Solution Approach 2:
The patent implements dynamics by applying currents with alternating polarities to the electrodes rather than a static unidirectional current. The polarity switching creates dynamic current paths that prevent magnetic field accumulation and offset, allowing the high-frequency waves to distribute uniformly across the skin surface while still covering a wide treatment area.
2Productivity
If the proximity effect occurs in the monopolar type, then the high-frequency waves oscillated from the plurality of RF electrodes are biasedly distributed only to a specific area of the skin, but the skin improvement effect is reduced
Solution Approach 1:
The asymmetric electrode arrangement prevents the proximity effect by ensuring that no single area receives concentrated high-frequency energy. The non-uniform electrode positioning and alternating current polarities distribute the therapeutic effect uniformly across the entire treatment area, maximizing skin improvement efficiency while eliminating biased energy distribution.
Solution Approach 2:
The patent changes the electrical parameters by alternating the polarity of currents applied to different electrodes. This parameter variation prevents magnetic field-induced current offset and ensures that high-frequency waves are generated uniformly across all electrode regions, thereby improving overall treatment efficiency and preventing localized over-treatment or under-treatment.
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 occurrence of the proximity effect, allowing for uniform distribution of high-frequency waves and effective skin treatment, including both monopolar and bipolar types of high-frequency outputs.
Implementation Method 1
a power source configured to apply currents of different polarities to the first electrode and the second electrode
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
Data Source
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Figure 2
AI summary
A high-frequency output device including 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.