Self-Retractable Skin Stimulation Patch with Thermal Trigger

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Solution Overview

Problem

Conventional skin stimulation patches require external devices or energy sources for retraction, limiting accessibility and convenience, and their manufacturing process is complex and costly due to the need for elongation recording.

Innovation Solution

A self-retractable patch with a retractable material and a trigger material that applies thermal energy under preset conditions, allowing controlled retraction and simplifying the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an external device or energy source is used to cause retraction, then retraction function is achieved, but customer accessibility and convenience of use are reduced

Engineering Contradiction:

Improveretraction functionVSAvoidconvenience of use

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patch performs retraction automatically without requiring external devices or user intervention. The elastomeric material is pre-configured to retract when detached from the adhesive layer, enabling self-service operation that improves both reliability and ease of use simultaneously

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The elastomeric material is pre-stretched and configured during manufacturing to automatically retract upon detachment. This preliminary preparation eliminates the need for external devices while ensuring reliable retraction function, resolving the contradiction between reliability and ease of operation

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If elongation is recorded in advance to enable retraction without external devices, then convenience of use is improved, but manufacturing process becomes complicated and manufacturing cost increases

Engineering Contradiction:

Improveconvenience of useVSAvoidmanufacturing process complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The invention extracts the retraction function from complex elongation recording mechanisms and implements it through a simple elastomeric material configuration. This eliminates the need for complicated manufacturing processes while maintaining ease of use, as the material naturally retracts when detached from the adhesive layer

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses a simple, inexpensive elastomeric material that can be easily manufactured and disposed of after single use. This approach avoids complex manufacturing processes and high costs associated with elongation recording mechanisms, while still providing convenient automatic retraction function

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Ease of operation

If elongation is recorded in advance to enable retraction without external devices, then convenience of use is improved, but manufacturing cost is greatly increased

Engineering Contradiction:

Improveconvenience of useVSAvoidmanufacturing cost

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The invention extracts the retraction function from expensive elongation recording mechanisms and implements it through a simple elastomeric material configuration. This eliminates the need for costly manufacturing processes while maintaining ease of use, as the material naturally retracts when detached from the adhesive layer

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Reliability

If conventional retraction method is used, then retraction is achieved, but direction and degree of retraction cannot be controlled

Engineering Contradiction:

Improveretraction functionVSAvoidcontrol of retraction direction and degree

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The elastomeric material is designed with non-uniform thickness and specific geometric configurations that create localized variation in retraction characteristics. This allows different regions of the patch to retract at different rates and directions, enabling controlled adaptation to various skin areas and stimulation requirements

Inventive Principle:

Principle #3Local quality

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

Enables controlled retraction of the patch at desired times with reduced manufacturing costs and complexity, providing effective skin stimulation.

Implementation Method 1

a trigger material which applies a preset energy to the retractable material so as to achieve the condition

Methodology Applied

Scientific EffectThermal energy: Heating

Implementation Method 2

the preset energy is a thermal energy

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Implementation Method 3

the trigger material is a water-sensitive self-heating material

Methodology Applied

Scientific EffectSelf-heating: Heating

Data Source

PatentUS20250221863A1Self-retractable patch for skin stimulation

Publication Date: 2025.07.10 AMOREPACIFIC CORP

AI summary

A self-retractable patch for skin stimulation is disclosed. A patch for skin stimulation includes a retractable material and a trigger material. According to one embodiment, as a patch capable of stimulating skin, a patch for skin stimulation includes a retractable material capable of retracting under a preset condition and a trigger material which applies a preset energy to the retractable material so as to achieve the condition may be provided.