Porous Augmentation Component for Joint Bone Implants
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Solution Overview
Problem
Existing augmentation components for joint bone implants do not adequately address bone loss during arthroplasty and can cause material residues due to friction, with limited stability and weight reduction options.
Innovation Solution
An augmentation component with a porous structure for bone tissue ingrowth and a surrounding structure for interlocking biocompatible cement, allowing improved grip and weight reduction, and minimizing aggressive contact with soft tissues, manufactured using 3D printing for customized fit and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a solid augmentation component is used to ensure stability, then the stability is improved, but the weight reduction and bone tissue ingrowth are limited
Solution Approach 1:
The augmentation component incorporates a porous structure with controlled porosity (30-70% open pores) that allows bone tissue ingrowth while maintaining mechanical stability. The porous architecture provides both weight reduction and biological integration, resolving the contradiction between stability and weight reduction.
Solution Approach 2:
The invention uses composite material structures combining different density regions (denser areas for structural support, lighter porous areas for bone ingrowth) within the same component, achieving both stability and weight reduction simultaneously through material composition optimization.
2Adaptability or versatility
If a porous structure is used to allow bone tissue ingrowth, then bone tissue ingrowth is improved, but the grip strength and stability may be reduced
Solution Approach 1:
The augmentation component features local quality variations with denser material in load-bearing regions and porous structures in bone contact areas. This spatial differentiation allows the component to provide both strong grip strength where needed and bone tissue ingrowth where beneficial, resolving the contradiction between these two requirements.
3Adaptability or versatility
If customization is achieved through 3D printing, then the customized fit is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention utilizes 3D printing technology to vary geometric parameters (pore size, porosity, density distribution) across different regions of the augmentation component based on patient-specific anatomical data. This parameter customization achieves optimized fit and function while the additive manufacturing process manages complexity through digital modeling rather than mechanical assembly.
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
Enhances stability and reduces the risk of dislocation and material residue, while allowing for customized fit and significant weight reduction, addressing bone loss effectively during joint implant procedures.
Implementation Method 1
a biocompatible material being curable on contact with water or an aqueous liquid
Implementation Method 2
a first structure being adapted to allow passage or penetration of a biocompatible material
Implementation Method 3
a first structure being adapted to allow in-growth of bone tissue
Data Source
AI summary
An augmentation component for an articular or joint implant includes a first structure and a second structure. The first structure allows passage or penetration of a biocompatible material being curable on contact with water or an aqueous liquid and/or being adapted to allow in-growth of bone tissue. The second structure surrounds the first structure at least in sections, or is arranged at least in sections onto the first structure along a periphery of the first structure. A surgical kit or system can include the augmentation component and at least one further kit or system component.