RF Electrode Array for Uniform Skin Heating
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Solution Overview
Problem
Existing RF energy treatment systems for skin rejuvenation and tightening face challenges in achieving uniform heat distribution and optimal treatment depth, often requiring multiple substrates with different electrode spacings and phase-controlled RF energy, which can lead to hotspots and inefficient energy focusing.
Innovation Solution
The system employs a plurality of RF electrodes arranged in arrays with synchronized but independently operated voltage generators, allowing for different RF voltage amplitudes to be applied to outer and inner electrode pairs, controlling current streamlines to focus energy on a specific skin volume at a desired depth, avoiding hotspots and enabling uniform heating across larger skin areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple substrates with different electrode spacings are used to achieve optimal treatment depth, then treatment depth control is improved, but device complexity increases
Solution Approach 1:
The patent divides the treatment area into multiple zones with different electrode pairs, where each pair targets a specific depth. Instead of using multiple substrates, the invention segments the electrode array into multiple independently controllable pairs within a single substrate, achieving depth control while reducing device complexity.
Solution Approach 2:
The patent transitions from controlling depth by changing substrates (one-dimensional approach) to controlling depth by independently activating different electrode pairs with varying spacings within a single substrate (two-dimensional control). This allows simultaneous access to multiple depths without increasing device complexity.
2Stability of the object's composition
If phase-controlled RF energy is used to achieve uniform heat distribution, then temperature uniformity is improved, but device complexity increases
Solution Approach 1:
The patent applies different RF voltage amplitudes to different electrode pairs based on their specific spacing and target depth requirements. Each electrode pair is optimized for its local treatment zone, achieving uniform heat distribution across the entire treatment area without requiring complex phase control mechanisms.
Solution Approach 2:
The patent controls temperature uniformity by varying the RF voltage amplitude parameter across different electrode pairs rather than using phase control. This allows independent optimization of energy delivery to each electrode pair, achieving uniform heat distribution while simplifying the control system.
3Adaptability or versatility
If multiple electrode pairs with different spacings are used to target different depths, then treatment versatility is improved, but energy focusing efficiency deteriorates
Solution Approach 1:
The patent segments the electrode array into multiple pairs with different spacings, where each pair is optimized for a specific treatment depth. By independently controlling the RF voltage amplitude of each pair, the system achieves versatile depth targeting while maintaining energy focusing efficiency through selective activation of appropriate electrode pairs.
Solution Approach 2:
The patent enables dynamic selection and independent control of RF voltage amplitudes for different electrode pairs based on treatment requirements. This dynamic control allows the system to adapt to various treatment depths and conditions while concentrating energy efficiently on the target tissue volume without wasting energy on non-target areas.
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
This approach allows for precise control of heat deposition patterns, ensuring effective skin rejuvenation and tightening by maintaining consistent energy delivery across the target area without excessive heating, thus improving treatment efficacy and safety.
Implementation Method 1
Application to skin of RF energy heats the segment of skin or tissue located between the electrodes
Implementation Method 2
The electric current streamlines produced by the RF voltage applied to the outer RF electrodes penetrate into the skin deeper than the electric current streamlines produced by the RF voltage applied to the inner RF electrodes
Implementation Method 3
The electric current streamlines produced by the RF voltage applied to the outer RF electrodes penetrate into the skin deeper than the electric current streamlines produced by the RF voltage applied to the inner RF electrodes
Implementation Method 4
The electric current streamlines produced by the RF voltage applied to the outer and inner electrodes are heating a common skin volume located about the middle of the distance between the inner RF electrodes
Data Source
AI summary
Disclosed is a system and a method for aesthetic skin treatment. The system includes an array of RF electrodes assembled on a flexible or rigid substrate. A plurality of RF voltage generators configured to address individually each of the RF electrodes of the array and supply to each pair of RF electrodes RF voltage. The amplitude of the RF voltage applied to inner pair of RF electrodes is lower than the RF voltage applied to outer pair of RF electrodes.