Multi-Frequency Skin Care Device with Integrated Electrodes

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Solution Overview

Problem

Existing skin care devices have limited absorption efficiency due to the reliance on single-frequency ultrasonic waves and require users to hold electrodes, restricting usage and convenience.

Innovation Solution

A portable skin care device with multiple skin contact plates of different shapes and frequencies, connected to separate poles, providing vibrations and electric current to enhance cosmetic absorption without the need for separate electrodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If single-frequency ultrasonic vibration is used, then device structure is simple, but cosmetic absorption efficiency is limited

Engineering Contradiction:
Improvedevice structureVSAvoidcosmetic absorption efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent divides the single vibration source into multiple independent vibrators (first vibrator and second vibrator) that operate at different frequencies. The head portion includes a first skin contact plate coupled to a first vibrator and a second skin contact plate coupled to a second vibrator, allowing simultaneous multi-frequency ultrasonic stimulation to enhance cosmetic ingredient penetration through different absorption mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the skin contact interface are assigned different vibration frequencies. The first skin contact plate applies a first frequency while the second skin contact plate applies a second frequency, creating localized frequency variations that target different cosmetic ingredients with optimal resonance frequencies for maximum absorption efficiency.

Inventive Principle:
Principle #3Local quality

2Reliability

If separate electrodes are used for electric current application, then current delivery is effective, but user convenience is reduced due to limited hand positioning

Engineering Contradiction:
Improvecurrent delivery effectivenessVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent merges the electrode function into the skin contact plates themselves. The conductive skin contact plates serve dual purposes: delivering ultrasonic vibrations to the skin and simultaneously serving as electrodes for electric current application. This integration eliminates the need for separate electrode holders, allowing users to maintain natural hand positioning while receiving both ultrasonic and electrical skin care treatments.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The skin contact plates are designed with multi-functionality, serving as both ultrasonic vibration transducers and electrical electrodes. This universal design allows a single component to perform multiple functions (mechanical vibration delivery and electrical current conduction), simplifying the overall device structure and improving ease of use while maintaining treatment effectiveness.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Increases the absorption rate of cosmetics by utilizing varied ultrasonic frequencies and electric current distribution, improving skin penetration while eliminating the need for users to hold electrodes, thus enhancing user convenience.

Implementation Method 1

vibrators providing vibration to the skin contact plate

Methodology Applied
Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 2

vibrates the skin to promote the penetration of cosmetics between skin cells

Methodology Applied
Scientific EffectAcoustic cavitation: Acoustic Cavitation

Implementation Method 3

applying electric current in an electrical way

Methodology Applied
Scientific EffectElectrophoresis: Electrophoresis

Implementation Method 4

promote the penetration of cosmetics between skin cells

Methodology Applied
Scientific EffectElectro-osmosis: Electro-Osmosis

Data Source

PatentUS11717658B2Skin care device
Publication Date: 2023.08.08 LG ELECTRONICS INC
  • US11717658B2 patent drawing
  • US11717658B2 patent drawing
  • US11717658B2 patent drawing

AI summary

In order to achieve the above or other aims, according to one aspect of the present disclosure, a skin care device is provided which comprises: a body comprising a grip section for a user to hold, and a head section positioned at the end of the grip section; a plurality of skin-contacting plates positioned at the end of the head section; a plurality of oscillators for providing oscillations to each of the skin-contacting plates; and a control unit which supplies an electrical current to the skin-contacting plates and controls the oscillators, wherein the positive electrode and the negative electrode of the control unit are respectively connected to different skin-contacting plates.