Dual-Channel Assay Cartridge Layout for Multi-Marker Detection
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Solution Overview
Problem
Existing diagnostic technologies face challenges in providing accurate, high-speed, and low-cost detection of multiple disease markers, particularly in point-of-care settings with variable environmental conditions and varying tester proficiency, which can affect quantitative or semi-quantitative test results due to non-standardized sample preparation and readout.
Innovation Solution
A cartridge system with multiple optical waveguides and fluidic chambers is used, allowing simultaneous detection of different disease markers by utilizing distinct wavelengths of energy, and separating capture molecules to minimize cross-reactivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple disease markers are detected using a single cartridge with multiple optical waveguides, then detection speed and productivity are improved, but device complexity increases
Solution Approach 1:
The cartridge is segmented into multiple independent fluidic chambers, each containing specific capture molecules for different disease markers. This segmentation allows parallel detection of multiple markers simultaneously while maintaining structural organization and managing complexity through modular design.
Solution Approach 2:
A single cartridge integrates multiple optical waveguides with different refractive indices, each capable of detecting different disease markers using distinct wavelengths. This multi-functional design enables one cartridge to perform what would traditionally require multiple separate tests, improving productivity without proportionally increasing complexity.
2Measurement precision
If different wavelengths of energy are used to detect different disease markers, then measurement precision is improved, but device complexity increases
Solution Approach 1:
Each optical waveguide is assigned a specific refractive index optimized for detecting particular disease markers at specific wavelengths. This local optimization of optical properties ensures high measurement precision for each marker while maintaining overall system manageability through specialized rather than universal components.
Solution Approach 2:
The system utilizes changes in optical parameters (refractive index and wavelength) to differentiate between various disease markers. By varying these physical parameters across multiple waveguides, the system achieves high measurement precision for multiple markers simultaneously without requiring fundamentally different detection mechanisms.
3Reliability
If fluidic chambers are separated to minimize cross-reactivity, then reliability is improved, but device complexity increases
Solution Approach 1:
The fluidic system is divided into separate chambers that physically isolate different capture molecules and their target markers. This segmentation prevents cross-reactivity between different marker-capture molecule pairs, ensuring reliable detection while organizing the fluidic pathways in a manageable configuration.
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
Enables simultaneous and accurate detection of multiple disease markers with reduced cross-reactivity, improving diagnostic efficiency and accuracy in diverse environments.
Implementation Method 1
a first waveguide structurally configured to be optically coupled to a first illumination beam of electromagnetic energy
Implementation Method 2
a second waveguide structurally configured to be optically coupled to a second illumination beam of electromagnetic energy
Implementation Method 3
the first waveguide has a first refractive index, a second fluidic chamber separate from the first fluidic chamber, the second fluidic chamber in fluid communication with the sample inlet and in contact with a second plurality of capture molecules, and a second waveguide structurally configured to be optically coupled to a second illumination beam of electromagnetic energy, wherein the second waveguide has a second refractive index that is different than the first refractive index
Data Source
AI summary
A cartridge includes a sample inlet, a first fluidic chamber in communication with the sample inlet and in contact with a first plurality of capture molecules, a first waveguide structurally configured to be optically coupled to a first illumination beam of electromagnetic energy, wherein the first waveguide has a first refractive index, a second fluidic chamber separate from the first fluidic chamber, the second fluidic chamber in fluid communication with the sample inlet and in contact with a second plurality of capture molecules, and a second waveguide structurally configured to be optically coupled to a second illumination beam of electromagnetic energy, wherein the second waveguide has a second refractive index that is different than the first refractive index.