Coiled Lifting Thread Structure for Long-Lasting Skin Elasticity
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Solution Overview
Problem
Existing lifting threads used in skin lifting procedures face issues such as short hydrolysis time due to high heat treatment temperatures, difficulty in controlling elasticity, and complications in insertion, leading to pain, dimples, and uneven skin surface after the procedure.
Innovation Solution
A lifting thread is manufactured in a coil spring shape by twisting and winding medical threads around a needle, with adjustable twist angles to generate torsional and tensile/compressive stresses, featuring a withdrawal portion, non-slip combination, and anchors for stable tensioning and easy insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high heat treatment temperature is applied to the lifting thread, then elasticity is improved, but hydrolysis time becomes too short
Solution Approach 1:
The patent changes the physical state and structural parameters of the lifting thread by forming it into a coil spring structure with specific geometric parameters (coil diameter, pitch, number of turns) and material composition parameters (polymer type, molecular weight, crystallinity). This allows the thread to achieve the required elasticity without requiring excessive heat treatment that would accelerate hydrolysis, thus resolving the contradiction between improving elasticity and maintaining prolonged hydrolysis time.
2Ease of manufacture
If lifting thread is inserted using conventional methods, then procedure is simple, but pain and skin surface irregularities occur
Solution Approach 1:
The patent applies local quality by providing the needle with a specific tapered geometry where the tip portion has a smaller diameter than the shaft portion, creating a localized quality difference. This tapered design allows the needle to penetrate skin more easily with less trauma, reducing pain and preventing skin surface irregularities while maintaining procedural simplicity. The local geometric modification at the needle tip resolves the contradiction between ease of insertion and minimization of harmful effects.
3Ease of manufacture
If lifting thread is made with fixed elasticity, then manufacturing is simple, but elasticity control is difficult
Solution Approach 1:
The patent implements dynamics by making the lifting thread's elasticity adjustable through variable geometric parameters of the coil spring structure. The thread can be manufactured with different coil diameters, pitches, and numbers of turns to achieve desired elasticity values. This dynamic design approach allows elasticity to be controlled and adapted to different application requirements while maintaining manufacturing simplicity through standardized coil spring formation processes.
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 lifting thread maintains significant elasticity over time, ensuring the skin remains lifted without sagging, simplifies the procedure, and prevents deformation, while minimizing hydrolysis and skin irritation.
Implementation Method 1
twisting a medical thread to generate the torsional stress and winding (coiling) the medical thread around the outer peripheral surface (circumference) of a needle so that a first elastic force according to the torsional stress of the medical thread
Implementation Method 2
a lifting thread having a coil spring structure in which a twisted thread obtained by twisting one or more medical threads centered on a longitudinal central axis L of the medical thread is wound (coiled)
Data Source
AI summary
The present invention relates to a lifting thread, a method for manufacturing the lifting thread, and a lifting thread insertion device. The lifting thread is manufactured in a coil spring shape by twisting a medical thread, and then winding (coiling) same around the outer peripheral surface (circumference) of a needle, such that when the lifting thread is tensioned and compressed during a skin lifting procedure, a first elastic force according to the torsional stress of the medical thread, and the greater stress obtained by adding the tensile or compressive stress of the lifting thread to the first elastic force, that is, a second elastic force, are applied so as to maintain, as is, the elasticity of the skin without sagging of the lifted skin even after a long period of time has elapsed after the skin lifting procedure, and thus a lifting effect can be maximized.