Hybrid-Scale Fiber Matrix Particles for Strength and Cellular Ingrowth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical meshes and materials face issues such as excessive fibrosis, scarification, poor tissue integration, immune reactions, limited mechanical strength, and biocompatibility, leading to complications like post-operative pain, adhesions, and infections, while nanofiber materials lack sufficient tensile strength and cellular ingrowth.
Innovation Solution
Development of a non-woven graft material composed of hybrid-scale fiber matrices with distinct fiber compositions, including poly(lactic-co-glycolic acid) and polydioxanone, which are electrospun and processed into particles for improved mechanical strength, biocompatibility, and cellular integration, suitable for wound healing and tissue repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If higher fiber densities are used to improve mechanical strength, then tensile strength and tear resistance are improved, but cellular ingrowth and tissue integration are decreased
Solution Approach 1:
The patent applies local quality by creating regions of different fiber densities within the same mesh structure. High-density regions provide mechanical strength where needed, while low-density regions facilitate cellular ingrowth and tissue integration. This spatial variation in fiber density allows the mesh to simultaneously satisfy both mechanical support requirements and biological integration requirements.
Solution Approach 2:
The patent uses composite materials by combining fibers of different compositions (synthetic and biologic) and different densities within the same mesh structure. This composite approach allows different regions to perform different functions - some areas optimized for strength while others optimized for cell penetration and tissue integration, resolving the contradiction between mechanical properties and biological compatibility.
2Strength
If higher fiber densities are used to improve mechanical strength, then tear resistance is improved, but tissue integration is decreased
Solution Approach 1:
The patent implements local quality by creating spatially varying fiber densities within the mesh. High-density zones provide tear resistance and mechanical integrity, while low-density zones allow tissue infiltration and integration. This localized differentiation enables the mesh to simultaneously achieve high tear resistance and good tissue integration without compromising either property.
Solution Approach 2:
The patent employs composite materials with varying fiber compositions and densities. By combining synthetic fibers (for strength) with biologic fibers (for integration) in a composite structure with controlled density gradients, the mesh achieves both high tear resistance and excellent tissue integration, resolving the contradiction between these two requirements.
3Strength
If synthetic materials are used to improve mechanical strength, then tensile strength is improved, but fibrosis and scarification are increased
Solution Approach 1:
The patent uses composite materials combining synthetic fibers (providing mechanical strength) with biologic fibers (reducing fibrosis). The synthetic component ensures adequate tensile strength for surgical handling and support, while the biologic component reduces the immune response and fibrotic reaction. This composite approach resolves the contradiction between achieving sufficient strength and minimizing harmful fibrotic responses.
Solution Approach 2:
The patent applies parameter changes by modifying the material composition parameters - specifically the ratio and types of fibers used. By adjusting the proportion of synthetic to biologic fibers and selecting specific fiber compositions, the patent optimizes the balance between mechanical strength and biocompatibility, reducing fibrosis while maintaining adequate tensile strength.
4Adaptability or versatility
If biologic materials are used to improve tissue integration, then cellular ingrowth is improved, but immune reactions are increased
Solution Approach 1:
The patent employs composite materials that combine biologic fibers (enhancing tissue integration) with synthetic fibers (reducing immune reactivity). The biologic component promotes cellular ingrowth and tissue integration, while the synthetic component provides a more immunologically inert background. This composite structure resolves the contradiction between achieving good tissue integration and minimizing immune reactions.
Solution Approach 2:
The patent applies local quality by creating regions with different material compositions. Areas with higher biologic fiber content promote tissue integration where needed, while areas with more synthetic fiber content reduce immune reactions. This spatial differentiation allows the mesh to simultaneously achieve good tissue integration in critical areas while maintaining lower immunogenicity overall.
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 hybrid-scale fiber matrices provide enhanced mechanical strength, reduced inflammation, and improved tissue integration, facilitating wound healing and tissue regeneration with minimal complications.
Implementation Method 1
nanofiber or hybrid-scale fiber matrix materials... formed by electrospinning a first fiber composition and a second fiber composition
Data Source
AI summary
Particles of non-woven graft materials for use in specialized surgical procedures such as soft tissue repair and wound management procedures, methods for making the powder, and methods for repairing tissue such as neurological tissue using the powder are disclosed. The particles can advantageously be used to fill irregular shaped areas or can be used in conjunction with non-woven graft materials.