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, making them costly.
Innovation Solution
A self-retractable patch using a retractable material like PNIPAAm and a trigger material such as a water-sensitive self-heating material with zeolite and polyol, which applies thermal energy to control retraction under preset conditions, allowing independent use and simple manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
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
Solution Approach 1:
The patch performs retraction automatically without requiring external devices or energy sources. The retractable material inherently possesses the ability to retract when exposed to specific conditions (such as temperature changes), making the system self-sufficient and eliminating the need for additional equipment.
Solution Approach 2:
The patent utilizes changes in physical parameters (temperature) to trigger retraction. The retractable material responds to temperature variations by changing its physical state, enabling automatic retraction without external control systems.
2Ease of operation
If elongation is recorded in advance to enable retraction without external devices, then accessibility is improved, but control over direction and degree of retraction is lost
Solution Approach 1:
The patch incorporates local structural features (such as grooves or patterned surfaces) that guide the retraction direction. Different regions of the patch have specific properties that control the direction and degree of retraction, allowing precise control while maintaining self-retraction capability.
3Reliability
If elongation process is included in manufacturing process, then retraction function is achieved, but manufacturing process becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent extracts the retraction function from the manufacturing process by using inherently retractable materials that possess retraction capability intrinsically. This eliminates the need for complex elongation recording processes during manufacturing, simplifying production while maintaining reliable retraction function.
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 patch enables controlled retraction direction and degree, can be used at desired times without external devices, and has a simplified manufacturing process with reduced costs.
Implementation Method 1
the preset energy is a thermal energy
Implementation Method 2
a water-sensitive self-heating material
Implementation Method 3
a retractable material capable of retracting under a preset condition
Data Source
Figure 1A
Figure 1B
Figure 2~3
AI summary
The present disclosure relates to a self-retractable patch for skin stimulation, and more specifically, to a patch for skin stimulation including a retractable material and a trigger material. According to one embodiment of the present disclosure, as a patch capable of stimulating skin, a patch for skin stimulation including 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.