High-Frequency Cosmetic Procedure Control With Skin-Height Detection

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Solution Overview

Problem

Conventional cosmetic procedure devices risk causing burns due to insufficient skin suction, leading to a narrow contact area between the electrode and the skin, especially when used by unskilled individuals.

Innovation Solution

A method for controlling a cosmetic procedure device that includes detecting the height of suctioned skin and determining whether to apply high frequency based on this height, ensuring adequate contact area before energizing the electrode.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high frequency is applied when skin suction is insufficient, then the procedure can be performed, but the contact area between electrode and skin becomes narrow causing burn risk

Engineering Contradiction:
Improveprocedure performanceVSAvoidburn risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs skin height detection before applying high frequency energy. The controller measures the height of suctioned skin using a sensor, and only enables high frequency application when the skin height exceeds a predetermined threshold, ensuring adequate contact area before energy delivery

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors skin height during the procedure and provides real-time feedback to the controller. Based on this feedback, the controller dynamically controls the high frequency output, preventing application when skin contact is insufficient and ensuring safety while maintaining procedure effectiveness

Inventive Principle:
Principle #23Feedback

2Object-affected harmful factors

If skin suction pressure is increased to ensure adequate contact area, then burn risk is reduced, but device complexity and user操作 difficulty increase

Engineering Contradiction:
Improveburn riskVSAvoidsuction control
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The system automatically detects skin height and controls high frequency output without requiring user judgment or adjustment. The sensor and controller work together to self-regulate the procedure parameters, eliminating the need for users to manually control suction pressure or estimate contact area

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces manual mechanical control of suction and high frequency with an automated sensing and control system. The skin height sensor and controller substitute for user skill and judgment, objectively measuring and responding to skin contact conditions

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 burns by ensuring sufficient skin contact area before applying high frequency, enhancing user safety and product reliability.

Implementation Method 1

forming a negative pressure in a suction space so as to suction skin into the suction space

Methodology Applied
Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

applying high frequency to the skin S that is in contact with the electrode

Methodology Applied
Scientific EffectHigh frequency energy: Dielectric Heating

Implementation Method 3

the skin S suctioned into the header part 20 contacts the high frequency electrode 30 to conduct electricity

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 4

detects a height of the skin suctioned into the suction space; detects which electrode end is in contact with the skin and conducts electricity

Methodology Applied
Scientific EffectElectrical conduction detection: Conduction (electrical)

Data Source

PatentEP4643939A1Method for controlling cosmetic procedure apparatus
Publication Date: 2025.11.05 APR CO LTD
  • EP4643939A1 patent drawingFigure 1
  • EP4643939A1 patent drawingFigure 2
  • EP4643939A1 patent drawingFigure 3

AI summary

A cosmetic procedure device control method is disclosed. The cosmetic procedure device control method according to one aspect of the present invention comprises: a skin suction step of forming negative pressure in a suction space so as to suction the skin into the suction space; a skin height detection step of detecting the height of the skin suctioned into the suction space; and a high frequency application determination step of determining whether to operate a high frequency application unit according to the height of the skin determined in the skin height detection step, wherein the skin height detection step detects which electrode end is in contact with the skin and conducts electricity from among a plurality of electrode ends of the high frequency application unit.