Barbed Suture Thread Resisting Compression in Rhinoplasty
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Solution Overview
Problem
Conventional rhinoplasty methods using silicon implants, Gore-tex, and autogenous cartilage face issues with tissue adhesion, side effects, and the inability to effectively handle compression forces, leading to unsatisfactory results and visible signs of plastic surgery.
Innovation Solution
A fiber-reinforced anti-compressive adherent suture method using a tissue-implantable thread with wedge-shaped protrusions arranged in opposite directions to resist compression, combined with specialized instruments for thread insertion and manipulation, allowing for safe and effective lengthening of soft tissues without tensile force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional materials (silicon, Gore-tex, autogenous cartilage) are used for tissue lengthening, then structural support is provided, but tissue adhesion is poor and side effects occur
Solution Approach 1:
The patent uses a composite structure combining absorbable suture material with non-absorbable barbed thread sections. The absorbable portion provides initial support and adhesion, while the barbed sections provide mechanical anchoring. This composite approach resolves the contradiction by integrating materials with complementary properties to achieve both strength and reliable adhesion.
2Ease of operation
If tension-based thread methods are used for fold removal, then folds are removed, but the method cannot effectively handle compression forces
Solution Approach 1:
The patent inverts the conventional approach by using compression-based barbed threads instead of tension-based smooth threads. The barbed structure allows the thread to resist compression forces by mechanically interlocking with tissue, enabling effective fold removal and tissue lengthening through compression rather than tension.
3Reliability
If autogenous tissues are used for lengthening, then biocompatibility is improved, but surgical complexity increases due to additional harvesting procedures
Solution Approach 1:
The patent employs absorbable suture materials that provide temporary support during the healing process and then degrade naturally. This disposable approach eliminates the need for complex autogenous tissue harvesting while maintaining biocompatibility, as the absorbable material serves its purpose and is then eliminated by the body.
4Device complexity
If conventional suture threads are used, then simplicity is maintained, but compression bearing capacity is insufficient
Solution Approach 1:
The patent creates a composite thread structure combining absorbable suture material with non-absorbable barbed sections. The barbed portions provide enhanced compression resistance through mechanical interlocking, while the absorbable portions maintain simplicity and biocompatibility. This composite design resolves the contradiction between structural complexity and compression bearing capacity.
Data Source
AI summary
Disclosed therein are instruments necessary for a surgical operation performed to keep a length of lengthened tissues, for instance, a raised nose on the face, using an improved thread embedded in a living body. More particularly, the present invention provides instruments for a fiber reinforced anti-compressive adherent suture method used to lengthen or separate soft tissues in the living body, which includes a tissue-implantable thread inserted into the living body by an injector needle and having wedge-shaped protrusions of different directionalities formed in two sections thereof, an injector for inserting the injector needle into the living body and moving it forwardly and backwardly, an instrument for inserting the tissue-implantable thread into the injector, and an instrument for vertically splitting an end of the thread to make the thread act in the living body.