Porous Transcutaneous Implants for Tissue Integration
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Solution Overview
Problem
Existing transcutaneous implants are prone to infection due to the lack of effective biological seal, and there is a limited understanding of the parameters required for promoting healthy soft tissue in-growth, particularly in porous metal implants that penetrate through dermal layers.
Innovation Solution
The development of transcutaneous implants with biocompatible substrates featuring a plurality of pores, such as trabecular and dodecahedral geometries, created using additive manufacturing, which facilitate skin and subcutaneous tissue in-growth, reducing the risk of infection by forming an effective biological seal and promoting tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If transcutaneous implants are made with solid surfaces to provide structural integrity, then mechanical strength is improved, but tissue in-growth is prevented and infection risk increases
Solution Approach 1:
The patent applies porous materials by creating implants with controlled pore structures (porosity between 30-80%) that allow soft tissue in-growth while maintaining structural integrity. The porous architecture enables bacterial penetration and tissue integration, transforming the implant surface from a barrier to a biocompatible interface that actively promotes healing and reduces infection risk.
Solution Approach 2:
The patent employs parameter changes by systematically varying pore size (50-500 μm), pore distribution density, and material composition (titanium, tantalum, polymers) to optimize both mechanical strength and biological performance. These parameter adjustments create a gradient structure that simultaneously provides structural support and facilitates tissue ingrowth.
2Reliability
If porous structures are created to promote tissue in-growth, then biocompatibility is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses parameter changes by defining specific pore size ranges (50-500 μm) and porosity percentages (30-80%) that can be achieved through standardized additive manufacturing processes. These controlled parameters enable reproducible fabrication of porous structures without requiring complex multi-step manufacturing procedures.
Solution Approach 2:
The patent replaces traditional mechanical manufacturing methods with additive manufacturing technology, which can directly fabricate complex porous geometries through digital modeling. This substitution eliminates the need for complex mechanical machining or assembly processes, simplifying manufacturing while achieving precise pore structure control.
3Productivity
If additive manufacturing is used to create porous implants, then manufacturing precision and speed are improved, but material selection is limited
Solution Approach 1:
The patent applies composite materials by combining different material systems (metallic titanium, metallic tantalum, and polymeric materials) with additive manufacturing to create porous implants with tailored mechanical and biological properties. This approach expands material selection beyond traditional AM limitations while maintaining high production speed and precision.
Data Source
AI summary
The present invention provides, among other things, implants including a biocompatible substrate, wherein the substrate includes a plurality of pores, such as trabecular and/or dodecahedral pores, and wherein said implant is configured as a transcutaneous implant. In some embodiments, provided implants may comprise multiple layers with differing pore densities, geometries, and/or distributions.