Multi-Element RF Applicator for Skin Fat Treatment
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Solution Overview
Problem
Existing RF devices for non-ablative skin and subcutaneous fat treatment require extensive operator involvement and are limited by safety and comfort constraints, leading to prolonged treatment times and increased costs.
Innovation Solution
A RF device with multiple applicators, each comprising identical RF elements that can be connected rigidly or flexibly, using mono-polar or bi-polar technology, with independent energy delivery and impedance monitoring to maintain target tissue temperature, allowing for efficient treatment of large areas with minimal attendant involvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If continuous RF energy delivery with hand piece movement is used, then treatment coverage area is improved, but treatment time is extended
Solution Approach 1:
The applicator is divided into multiple independent RF elements (first, second, third elements) that can be activated simultaneously or sequentially. Each element contains electrodes configured to deliver RF energy to overlapping treatment zones, enabling parallel treatment of multiple areas to reduce overall treatment time while maintaining safe temperature elevation.
Solution Approach 2:
The system employs intermittent RF energy delivery with periodic pauses to allow tissue cooling and temperature monitoring. The controller activates and deactivates RF elements in a periodic manner, delivering energy in controlled cycles rather than continuous operation, which maintains treatment efficacy while preventing overheating and reducing total treatment duration.
2Loss of time
If high RF energy density is applied to reach target temperature quickly, then treatment time is reduced, but safety and comfort constraints are exceeded
Solution Approach 1:
Each RF element is equipped with its own temperature sensor and impedance monitoring system that provides localized feedback. The controller adjusts RF energy delivery independently for each element based on real-time temperature and impedance measurements, ensuring that each treatment zone receives appropriate energy density to reach target temperature (40-50°C) without exceeding safety thresholds that would cause thermal damage.
Solution Approach 2:
The system incorporates real-time feedback through temperature sensors and impedance monitoring in each RF element. The controller continuously receives temperature and impedance data, adjusting RF energy delivery dynamically to maintain target temperature while preventing overheating. Treatment is automatically interrupted if impedance falls outside acceptable ranges or temperature exceeds safe limits.
3Productivity
If multiple RF elements are used to treat large areas simultaneously, then productivity is improved, but device complexity increases
Solution Approach 1:
Multiple RF elements are designed with identical or similar structures, each containing electrodes and temperature sensors configured to perform the same treatment function. This modular, universal design allows the system to treat different treatment zones with the same component architecture, simplifying manufacturing and maintenance while enabling simultaneous treatment of multiple areas through coordinated activation of identical elements.
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 device enables efficient and controlled RF energy delivery to maintain target tissue temperature, reducing treatment time and costs while improving treatment efficacy for areas like the face and body.
Implementation Method 1
RF energy is applied (simultaneously or not) by the multiple elements so as to reach and maintain a required tissue temperature during a predetermined period of time
Implementation Method 2
The temperature sensor can be a thermistor, thermocouple, optical, or other
Data Source
AI summary
The invention relates to a radio-frequency (RF) device for non-ablative treatment of skin and subcutaneous fat using applicator with multiple RF delivering elements.