3D-Customized PTFE Membrane Trimming Guide for Bone Regeneration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for guided bone and tissue regeneration, such as GTR and GBR, face challenges with material limitations and procedural inefficiencies, including the use of autogenous bone grafts, titanium meshes, and imperfect fit, which can lead to complications and reduced regenerative outcomes.
Innovation Solution
A customized membrane configured for bone and tissue regeneration, featuring a reinforced polytetrafluoroethylene (PTFE) mesh with a first layer for bone contact and a second layer to prevent fibrous tissue growth, designed using 3D modeling and simulation tools, allowing for precise fit and enhanced mechanical compliance, and including perforations for improved bone ingrowth and ease of removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional titanium meshes are used for bone regeneration, then structural strength is provided, but handling difficulty and removal complexity increase
Solution Approach 1:
The patent changes the material parameter from rigid titanium to flexible PTFE, transforming the mechanical properties of the barrier membrane. This allows the membrane to be both structurally sufficient for bone regeneration and easily handleable and removable, resolving the contradiction between strength and ease of operation
Solution Approach 2:
The patent employs a flexible PTFE membrane instead of rigid titanium mesh. The flexible nature of the thin film membrane provides adequate structural support for bone regeneration while significantly improving ease of handling and removal compared to rigid titanium constructs
2Reliability
If barrier membranes are used to prevent fibrous tissue growth, then bone regeneration is guided, but fibrous tissue ingrowth may still occur
Solution Approach 1:
The patent utilizes the inherent porous structure of PTFE membranes to guide bone regeneration. The porous architecture allows controlled tissue ingrowth while maintaining the barrier function against fibrous tissue, resolving the contradiction between reliable bone guidance and prevention of harmful fibrous ingrowth
3Manufacturing precision
If customized membranes are manufactured using 3D modeling, then precise anatomical fit is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary 3D modeling and simulation to design the customized membrane geometry before manufacturing. This preliminary digital planning achieves precise anatomical fit while streamlining the subsequent manufacturing process, resolving the contradiction between manufacturing precision and device complexity
Data Source
AI summary
This disclosure describes manufacturing of a device configured to guide bone and tissue regeneration for a bone defect. A method may include receiving a three-dimensional digital model or scan representing an anatomical feature to be repaired, generating a simulated membrane using the three-dimensional model, the simulated membrane being configured to cover the anatomical feature to be repaired, generating a digital two-dimensional flattened version of the simulated membrane, and generating code or instructions configured to cause a three-dimensional printer or milling device to produce a trimming guide that includes an opening corresponding to the flattened version of the simulated membrane and that further includes a cut-out configured to hold a premanufactured membrane. The trimming guide may be operative as a guide for marking or cutting the premanufactured membrane through the opening while the premanufactured membrane is held in the cut-out.