Porous Extraction Tablets for Rapid Analyte Capture
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Solution Overview
Problem
Current methods for extracting solid-phase materials from liquid samples, such as plasma or urine, are inefficient and require large sample volumes, leading to prolonged extraction times and higher costs.
Innovation Solution
The development of porous tablets made from molecularly imprinted polymers, graphitic sorbents, or silica, which are designed to selectively capture specific analytes by forming around a template molecule, allowing for rapid and selective extraction of analytes like methadone and amphetamine from small sample volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solid-phase extraction methods (SPME, SBSE) are used, then analyte extraction can be achieved, but large sample volumes are required and extraction time is prolonged
Solution Approach 1:
The patent employs porous extraction tablets with controlled pore sizes and high surface area to volume ratios. The porous structure provides numerous active sites for analyte adsorption while maintaining a compact form factor, enabling rapid extraction from small sample volumes without requiring prolonged contact time
Solution Approach 2:
The extraction tablets are composed of composite materials combining different sorbent phases (e.g., graphitic carbon, silica, polymer coatings) within a single tablet structure. This composite approach synergistically enhances extraction capacity and speed while reducing the sample volume needed for effective analyte recovery
2Quantity of substance
If conventional solid-phase extraction methods are used, then analyte extraction can be achieved, but large sample volumes are required
Solution Approach 1:
The high porosity and surface area of the extraction tablets maximize the interaction between the limited sample volume and the sorbent material, ensuring efficient analyte capture even when only small volumes of biological fluid are available
Solution Approach 2:
The patent transitions from linear extraction phases (fibers in SPME, rods in SBSE) to a three-dimensional tablet structure, dramatically increasing the available surface area and adsorption capacity within a compact volume, thereby enhancing extraction efficiency from minimal sample volumes
3Measurement precision
If molecularly imprinted polymers are used to form around template molecules, then high selectivity for specific analytes is achieved, but manufacturing complexity increases
Solution Approach 1:
The molecular imprinting process is performed during tablet manufacturing, creating analyte-specific binding cavities within the polymer matrix before the tablet is put into service. This preliminary structuring of the polymer around template molecules ensures high selectivity for target analytes like methadone and amphetamine while the tablet itself remains a simple, handleable form
Solution Approach 2:
The molecular imprinting process utilizes controlled polymerization parameters (monomer-to-template ratio, cross-linking density, polymerization conditions) to create highly selective binding sites. By optimizing these parameters during manufacturing, the tablets achieve high analyte selectivity while maintaining practical manufacturability
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 tablets enable accurate and efficient extraction of analytes with high selectivity and reduced sample volume requirements, significantly decreasing extraction time and manufacturing costs compared to existing techniques like SPME and SBSE.
Implementation Method 1
The tablet comprises a tablet formed of a polymer having applied to it a thin-film polymer and having a porosity sized to accept a solid-form analyte of interest from a liquid sample and to hold the solid-form analyte in an internal portion of the tablet
Implementation Method 2
Molecular Imprinting generally involves polymerizing monomers in the presence of a template molecule so that the polymer forms around the template molecule
Implementation Method 3
The analyte can then be removed, such as by using ethanol, or can otherwise by introduced into an analysis machine
Data Source
AI summary
A method of producing a biologic liquid sampling tablet is disclosed and includes molecularly imprinting a polymer over a matrix of an analyte of interest for biological testing; and removing the matrix from the imprinted polymer to form a porous tablet. The tablet is sized to be inserted in an ampoule or human oral cavity.