RF Skin Treatment Device with Multi-Electrode Configuration
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Solution Overview
Problem
Existing radio-frequency (r.f.) skin treatment devices require multiple probes and complex configurations for various treatments, leading to increased costs, operational errors, and potential skin damage due to fixed electrode dimensions and configurations.
Innovation Solution
A non-invasive r.f. skin treatment device with a first and second inner region heating mechanism, utilizing a single device to perform both skin rejuvenation and tightening treatments by adjusting electrode configurations and energy distribution, allowing for bipolar mode operation and selective activation of generators to target specific skin depths and areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple probes with fixed electrode configurations are used for different skin treatments, then treatment versatility is improved, but device complexity and operational error risk increase
Solution Approach 1:
The patent implements a single probe with multiple electrode configurations that can perform different skin treatments (rejuvenation, tightening, body contouring) by selectively activating different electrode pairs. The control unit enables the same physical probe to deliver bipolar, monopolar, and multipolar currents through different electrode combinations, eliminating the need for multiple specialized probes while maintaining treatment versatility.
Solution Approach 2:
The patent employs dynamically configurable electrode arrangements where the electrical configuration of the electrodes can be changed through control unit settings. The system can switch between different current paths, electrode polarities, and activation sequences, allowing the fixed physical electrode structure to adapt its functional configuration dynamically during treatment without requiring physical reconfiguration.
2Reliability
If multiple probes are used for different treatments, then treatment effectiveness is improved, but the risk of operating errors and skin damage increases
Solution Approach 1:
The patent incorporates temperature sensors in proximity to the electrodes that provide real-time feedback to the control unit. The control unit monitors tissue temperature during treatment and automatically adjusts or terminates current delivery when predetermined temperature thresholds are reached, preventing overheating and skin damage while maintaining effective treatment temperatures.
Solution Approach 2:
The patent implements predetermined safety parameters and automated control algorithms that prevent harmful conditions before they occur. The control unit is programmed with safe operating limits, current density thresholds, and treatment duration constraints that automatically protect the skin from damage, eliminating the need for operator judgment and reducing the risk of human error.
3Ease of manufacture
If fixed electrode dimensions are used in probes, then manufacturing simplicity is improved, but treatment adaptability decreases
Solution Approach 1:
The patent uses fixed physical electrode structures with dynamic electrical configuration capabilities. The electrodes maintain constant physical dimensions for easy manufacturing, but the control unit dynamically selects which electrodes to activate and in what configurations, allowing the same physical structure to adapt to different treatment requirements through software control rather than hardware changes.
Solution Approach 2:
The patent designs a universal electrode array where multiple electrodes with fixed geometries can be combined in various patterns to create different treatment fields. The same set of electrodes can be configured for focal treatments, linear treatments, or area treatments by selectively activating different electrode pairs, providing treatment adaptability without requiring multiple specialized probe designs.
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
Enables effective and reproducible treatments for multiple skin conditions with reduced healing time and minimized risk of undesired heating, allowing for simultaneous or alternating skin rejuvenation and tightening without changing the probe position, thereby improving skin appearance and reducing treatment complexity.
Implementation Method 1
The r.f. energy is dissipated as thermal energy primarily due to intramolecular vibrations.
Implementation Method 2
The basic principle of r.f. energy delivery at the skin surface to skin tissue is that an alternating current is applied in a closed circuit with the skin. The r.f. energy is dissipated as thermal energy primarily due to intramolecular vibrations.
Implementation Method 3
The thermal effects range from sub-epidermal tissue contraction to skin surface damages, e.g. cell necrosis and ablation.
Data Source
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AI summary
The invention provides a non-invasive treatment device (100) for heating a first (15) and a second (25) inner region of skin using r.f. electrical current, comprising: a first r.f. treatment electrode (10) configured and arranged to allow r.f. current to pass through the first inner region (15) to a return electrode (340), a second r.f. treatment electrode (20) configured and arranged to allow r.f. current to pass through the second inner region (25) to the return electrode (340), the device further being arranged such that the smallest distance between the first r.f. treatment electrode (10) and the return electrode (340) is less than the smallest distance between the second r.f. treatment electrode (20) and the return electrode (340); wherein the electrical skin contact area of the return electrode (340) is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode (10), and the electrical skin contact area of the second r.f. treatment electrode (20) is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode (10). By incorporating the second and first treatment electrodes in the same device, or probe, the positional relationship between the first and second regions being heated is fixed, or at least more predictable. By means of a suitable configuration, the regions may coincide to a smaller or greater degree. In some cases, the configuration may allow the same skin condition to be treated using heating of the first and second inner regions without moving the device over the skin. By providing an electrical skin contact area of the return electrode which is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode, the locations heated by the r.f. electrical current will be proximate to the first treatment electrode, reducing the possibility of undesirable hotspots proximate the return electrode (340).