Graphical Interface for RF Tissue Heating

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Solution Overview

Problem

Existing cosmetic energy delivery systems for skin tightening face challenges in delivering energy uniformly to deep skin structures without affecting the outer skin layers, leading to risks of collateral damage and inefficiencies in targeting specific tissue areas.

Innovation Solution

The development of a system with a graphical user interface and energy transfer elements that allow precise control over energy delivery, including tissue characteristic indicators to monitor impedance, temperature, and depth, enabling targeted energy application to the dermis while minimizing energy to the epidermis, and the use of probes that can reach subcutaneous fat layers for lipolysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If energy is delivered to deep skin structures for tightening, then cosmetic effect is improved, but risk of collateral damage to outer skin layers increases

Engineering Contradiction:
Improvecosmetic effectVSAvoidcollateral damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by creating a non-uniform electric field distribution where different regions receive different energy levels. The electrode array configuration and grounding electrode placement are designed to concentrate energy in the dermis while minimizing epidermal exposure, achieving localized heating precisely where needed for collagen tightening without damaging outer skin layers.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses the electrical field itself as an intermediary to deliver energy selectively. By controlling field strength, frequency, and electrode geometry, the system mediates energy transfer to reach deep structures while the epidermis acts as a natural barrier that limits excessive energy absorption, thus protecting it from collateral damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If energy is applied uniformly across treatment area, then treatment efficiency is improved, but precision in targeting specific tissue areas decreases

Engineering Contradiction:
Improvetreatment efficiencyVSAvoidtargeting precision
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent segments the treatment area into multiple electrode zones with independent control. Each electrode or electrode pair can be individually activated or adjusted, allowing the system to maintain high treatment efficiency across large areas while simultaneously providing precise control over which specific tissue regions receive energy, thus resolving the contradiction between uniformity and precision.

Inventive Principle:
Principle #1Segmentation

3Power

If high energy is delivered to achieve deep heating, then treatment effectiveness is improved, but risk of burning epidermis increases

Engineering Contradiction:
Improveheating powerVSAvoidepidermal burning
Core Design Contradiction:
PowerVSObject-affected harmful factors

Solution Approach 1:

The patent employs periodic or pulsed energy delivery rather than continuous high-power application. By delivering energy in controlled pulses with appropriate duty cycles, the system achieves deep dermal heating effectiveness while allowing thermal diffusion to protect the epidermis from burning, thus resolving the contradiction between power and safety.

Inventive Principle:
Principle #19Periodic action

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 system enables precise and uniform heating of deep skin structures, reducing the risk of collateral damage and allowing for customized treatments, including skin tightening and fat reduction, while ensuring energy is applied effectively to the desired tissue areas.

Implementation Method 1

generation of energy to produce a result at the dermis results in unwanted energy passing to the epidermis and subcutaneous layers. Accordingly, excessive energy production creates the risk of unwanted collateral damage to the skin.

Methodology Applied
Scientific EffectResistive heating: Joule Heating

Implementation Method 2

simultaneously attempting to cool the epidermis with a second energy source to prevent external burning of the epidermis

Methodology Applied
Scientific EffectCooling: Cooling

Data Source

PatentUS8608737B2Methods for applying energy to tissue using a graphical interface
Publication Date: 2013.12.17 SYNERON MEDICAL LTD
  • US8608737B2 patent drawing
  • US8608737B2 patent drawing
  • US8608737B2 patent drawing

AI summary

The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect.