Biodegradable Bone Augmentation Bag With Differential Film Degradation
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Solution Overview
Problem
Existing bone augmentation techniques using resorbable barrier membranes are not user-friendly, as they require complex operations to stabilize the membrane, leading to decreased bone augmentation and prolonged surgery times, and existing single sheet-like products fail to effectively prevent bone substitute movement.
Innovation Solution
A biodegradable bag composed of two films with differing degradation times, where one film has a longer degradation time than the other, allowing for visual or tactile differentiation, which is used to contain a bone substitute and stabilize it without the need for additional fixation, simplifying the surgical procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single sheet resorbable barrier membrane is used for bone augmentation, then the procedure is simple, but the membrane is unstable and moves, reducing bone augmentation effectiveness
Solution Approach 1:
The barrier membrane is divided into multiple sheets (first sheet, second sheet, and optionally third sheet) with different resorption rates. The first sheet provides immediate stability and support, while the second sheet resorbs faster to allow tissue regeneration. This segmentation resolves the contradiction by providing both stability (through multiple layers) and controlled resorption (through different material properties), eliminating the need for complex fixation procedures.
Solution Approach 2:
The invention uses composite material structure with at least two different resorbable barrier membranes having different resorption rates. The first barrier membrane has a slower resorption rate to maintain structural integrity and stability, while the second barrier membrane has a faster resorption rate to facilitate tissue regeneration. This composite approach maintains simplicity of use while ensuring membrane stability through material design rather than procedural fixation.
2Reliability
If barrier membrane fixation pins or sutures are used to stabilize the membrane, then the membrane stability improves, but the surgical procedure becomes more complex and time-consuming
Solution Approach 1:
The barrier membrane system is segmented into multiple functional layers with different resorption characteristics. The first sheet provides structural stability without requiring pins or sutures, while the second sheet resorbs to allow regeneration. This eliminates the need for additional fixation devices and simplifies the surgical procedure while maintaining membrane stability.
Solution Approach 2:
The multi-sheet barrier membrane structure is designed to be self-stabilizing through its layered construction and differential resorption properties. The slower-resorbing first sheet automatically provides structural support and stability, eliminating the need for external fixation mechanisms like pins or sutures. The system serves itself by design rather than requiring additional surgical intervention for stabilization.
3Ease of operation
If a single sheet barrier membrane is used, then the procedure is simple, but bone augmentation amount decreases due to membrane movement
Solution Approach 1:
The barrier membrane is segmented into multiple sheets with different resorption rates, where the first sheet maintains stability to prevent bone substitute movement, ensuring adequate bone augmentation. The layered structure provides both simplicity of procedure and effectiveness of bone regeneration simultaneously.
Solution Approach 2:
The composite barrier membrane structure with different resorbable materials provides both structural stability (to prevent movement and ensure bone augmentation) and biocompatibility (for tissue regeneration). This resolves the contradiction between procedural simplicity and bone augmentation effectiveness.
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 biodegradable bag ensures stable bone augmentation with reduced surgical complexity and time, maintaining the bone substitute in place, thereby enhancing bone regeneration and reducing operation duration.
Implementation Method 1
an in vivo degradation time of the first film is equal to or longer than an in vivo degradation time of the second film
Data Source
Figure 1(A)~1(F)
Figure 2(A)~2(C)
Figure 3(A)~3(C)
AI summary
A bag 1 is used for bone augmentation, includes a first film 2a and a second film 2b each made of a biodegradable component, and has an opening 3 between the first film 2a and the second film 2b superimposed and bonded with each other. An in vivo degradation time of the first film 2a is equal to or higher than an in vivo degradation time of the second film 2b, and if the in vivo degradation times of the first film 2a and the second film 2b are different from each other, the first film 2a and the second film 2b are different from each other so as to be visually or tactilely identifiable.