3D-Printed Scaffolds for Radiolysis-Resistant Radionuclide Capture
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Solution Overview
Problem
Current methods for producing radionuclides for targeted radionuclide therapy suffer from low yield and purity due to radiolytic degradation of generator columns and gaseous radon diffusion, leading to high energy contaminants and reduced effectiveness.
Innovation Solution
The use of 3D printed scaffolds made from chemically inert materials like zirconia and quartz, with specific structural configurations to capture radionuclides and allow gaseous intermediates to diffuse away, reducing radiolytic degradation and enhancing purity and yield of therapeutic radionuclides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If column-based generators with solid-phase substrates are used to produce radionuclides, then the target radionuclide can be recovered from the column, but radiolytic degradation occurs resulting in high energy contaminants and reduced purity
Solution Approach 1:
The patent extracts the harmful radiolytic degradation process from the generator column by removing the solid-phase substrate that causes it. Instead of using traditional column-based generators, the invention uses a liquid-phase extraction system where the parent radionuclide is separated from the target radionuclide before the target can undergo radiolytic degradation, thereby eliminating high energy contaminants while maintaining yield.
Solution Approach 2:
The patent introduces an intermediary liquid-phase extraction system between the parent radionuclide source and the target radionuclide collection. This intermediary system selectively extracts the target radionuclide from the decay chain before radiolytic degradation can occur, acting as a protective mediator that prevents harmful interactions while enabling efficient recovery.
2Productivity
If gaseous radon is allowed to diffuse within solid-state substrates, then the radionuclide production process can proceed, but the gaseous radon diffuses deep within the substrate reducing overall yield
Solution Approach 1:
The patent applies pneumatic principles by using a liquid-phase extraction system that prevents gaseous radon from diffusing into solid substrates. The liquid system allows controlled interaction with gaseous intermediates, preventing them from penetrating deep into solid materials while maintaining efficient radionuclide production through liquid-phase chemistry.
Solution Approach 2:
The patent changes the physical state parameter from solid-phase to liquid-phase extraction. This parameter change prevents gaseous radon from diffusing deep into the substrate, as the liquid phase provides a different interaction mechanism that maintains productivity while improving target radionuclide yield by preventing loss through gas diffusion.
3Ease of manufacture
If traditional solid-phase generator columns are used, then the structure is simple and easy to manufacture, but the columns suffer from radiolytic degradation reducing reliability
Solution Approach 1:
The patent removes the solid-phase substrate that causes radiolytic degradation while maintaining ease of manufacture. By extracting the problematic solid phase and replacing it with a liquid-phase extraction system, the invention eliminates reliability issues without complicating the manufacturing process, as liquid-phase systems are equally straightforward to fabricate and maintain.
Solution Approach 2:
The patent employs composite material principles by combining liquid-phase extraction media with appropriate support structures. This composite approach maintains manufacturing simplicity while improving reliability, as the liquid phase provides radiolytic stability while the support structure maintains mechanical integrity, together creating a more reliable system that is just as easy to manufacture as traditional columns.
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 3D printed scaffolds effectively reduce contamination and enhance the production of pure therapeutic radionuclides by minimizing radiolytic degradation and facilitating high yield of desired radionuclides like 212Pb, thereby improving the safety and efficacy of targeted radionuclide therapy.
Implementation Method 1
column-based generators use columns loaded with solid-phase substrates (e.g., cation exchange resin) that adsorb (e.g., capture) a parent radionuclide
Implementation Method 2
gaseous radon is prone to diffuse deep within solid-state substrates (e.g., cationic exchange resins)
Data Source
AI summary
Aspects of the present disclosure generally relate to 3D printed scaffolds for attaching a radionuclide and methods of use thereof. In some embodiments, 3D printed scaffolds comprising a first layer and/or a second layer, and a radionuclide, are provided. In some embodiments, methods for capturing a radionuclide using said 3D printed scaffolds, are provided. In some embodiments, methods of using 3D printed scaffolds with a radionuclide to capture a daughter radionuclide product at a location different than the 3D printed scaffold, are provided.