Mesh Assembly for Cosmetic Surgery with Protrusions
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Solution Overview
Problem
Current cosmetic surgery techniques, such as facelifts, face challenges with threads that are ineffective in pulling skin tissue firmly and are prone to breaking or becoming untied, leading to suboptimal results in tissue lifting procedures.
Innovation Solution
A mesh assembly for cosmetic surgery featuring a mesh sleeve with helical string members, a core, and protrusions that can be securely attached to the surgical site, providing high strength and precise adjustment capabilities, utilizing hydrolysable materials like polydioxanone and designed with a cover film to restrain protrusions for secure tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a thread is used to pull skin tissue, then the procedure is simpler than incision methods, but the thread cannot firmly attach to tissue and is liable to break or become untied
Solution Approach 1:
The mesh assembly divides the attachment function into multiple protrusions distributed along the core, rather than relying on a single thread. Each protrusion independently engages with tissue, distributing the mechanical load and preventing failure at a single point.
Solution Approach 2:
The invention transitions from a one-dimensional thread to a three-dimensional mesh structure with protrusions extending in multiple directions. This dimensional change allows the assembly to engage tissue from multiple points simultaneously, dramatically improving attachment strength while maintaining procedural simplicity.
2Reliability
If a mesh assembly with protrusions is used to firmly attach to tissue, then attachment strength is improved, but device complexity increases due to cover film and multiple components
Solution Approach 1:
The mesh assembly employs a nested structure where the core is positioned within the mesh sleeve, and protrusions extend from the core through the mesh structure. This nesting allows multiple functional elements to be compactly integrated without significantly increasing overall device complexity.
Solution Approach 2:
The mesh sleeve acts as an intermediary between the core and the tissue, providing a biocompatible interface that facilitates tissue integration while protecting the core. The cover film serves as a temporary intermediary that maintains protrusion positioning during insertion, then is removed to allow final tissue engagement.
3Ease of repair
If hydrolysable materials like PDO are used, then the mesh assembly can degrade and be removed naturally, but the material selection is limited
Solution Approach 1:
The invention specifies particular hydrolysable materials (PDO, PLA, PLLA, PCL, PHA, PHB, PDLLA) with known degradation characteristics. By selecting from this defined set of parameters, the design achieves reliable biodegradation while maintaining material versatility for different clinical requirements.
Solution Approach 2:
The mesh assembly combines multiple materials with complementary properties: the mesh sleeve and core use hydrolysable polymers for biodegradation, while the cover film provides temporary protective function. This composite approach allows each material to be optimized for its specific function while working together as an integrated system.
Data Source
AI summary
A mesh assembly for cosmetic surgery that can be used for tissue lifting is proposed. The mesh assembly includes: a mesh sleeve that includes a multiple number of helical string members, which are entwined in intersecting directions to form a passage having a particular diameter within the mesh sleeve; a core that extends along a first direction and is positioned within the passage; and a protrusion that protrudes from the outer perimeter of the core in a direction inclined towards one side and extends through a gap between the string members to the outside of the mesh sleeve. The mesh assembly can have a drastically greater strength compared to a regular surgical thread and can also be joined to the surgical site with high strength, thus providing greater utility in procedures such as tissue lifting.