Vacutainer-Based Infectious Disease Testing Apparatus
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Solution Overview
Problem
Current testing modalities for infectious agents, such as centralized testing, mini-clinics, and over-the-counter tests, are inadequate for rapid, cost-effective, and accurate detection of multiple viruses, especially during pandemics, due to issues like turn-around-time, queuing, single agent detection, and poor sensitivity in asymptomatic cases.
Innovation Solution
An apparatus comprising a sample container with a lysis reagent, vacutainers sealed at negative pressure with stabilized reagents, and an engageable fluid communication channel that allows for fluid connection between the sample container and vacutainers, enabling detection of target analytes through isothermal amplification and optical detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If centralized testing is used, then detection capability is improved, but turn-around-time increases and productivity decreases
Solution Approach 1:
The testing system is segmented into decentralized portable devices that can be distributed across multiple locations, allowing simultaneous testing of multiple samples without centralized bottlenecks. Each portable device contains integrated reagent cartridges and detection components that operate independently, enabling parallel processing of samples across different settings.
Solution Approach 2:
Reagents are pre-stabilized and pre-loaded into sealed cartridges during manufacturing, eliminating the need for complex sample preparation steps at the testing site. The cartridges contain pre-measured reagent concentrations and protective atmospheres that maintain reagent stability without requiring controlled storage conditions, allowing immediate use upon activation.
2Ease of operation
If mini-clinics are used, then accessibility is improved, but device complexity and cost increase
Solution Approach 1:
The portable testing device incorporates automated sample processing capabilities where the system automatically aspirates, mixes, and processes samples without requiring trained personnel. The device includes integrated fluid handling mechanisms that self-regulate reagent dispensing and sample mixing, reducing operational complexity while maintaining accessibility in various settings.
Solution Approach 2:
Multiple testing functions are merged into a single integrated portable device, combining sample processing, reagent storage, amplification, and detection capabilities in one unit. The device integrates fluid handling, thermal cycling, and optical detection systems into a unified platform, reducing the need for multiple separate equipment pieces while maintaining comprehensive testing functionality.
3Ease of operation
If over-the-counter tests are used, then ease of operation is improved, but sensitivity and detection precision deteriorate
Solution Approach 1:
The device replaces manual droplet-based application with automated electronic fluid handling systems that precisely control reagent and sample volumes. Electronic pumps and valves replace manual pipetting, ensuring consistent and accurate reagent delivery while maintaining simple user interaction through automated protocols.
Solution Approach 2:
The system employs isothermal amplification conditions that optimize detection sensitivity for portable operation, maintaining precise temperature control at a single set point rather than requiring complex thermal cycling. The detection system uses optical sensors with enhanced sensitivity to detect low concentrations of target analytes, compensating for the simplified portable design.
4Device complexity
If single agent detection is used, then device complexity is reduced, but adaptability and versatility worsen
Solution Approach 1:
The portable device is designed with universal reagent cartridges that can detect multiple different pathogens using the same fundamental detection platform. The system can accommodate different probe sets and reagent formulations to target various viruses and bacteria, allowing a single device to perform multiple testing functions by simply changing the cartridge type.
Solution Approach 2:
The detection system uses adjustable optical parameters and detection thresholds that can be programmed to identify different pathogens. The device can modify amplification conditions and detection settings based on the specific pathogen being tested, enabling versatile pathogen detection through software-controlled parameter adjustments rather than requiring different hardware for each pathogen.
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 apparatus facilitates rapid, accurate, and cost-effective detection of multiple infectious agents in various settings, improving turn-around-time and sensitivity, especially in asymptomatic cases, by enabling self-testing and clinical surveillance.
Implementation Method 1
at least one vacutainer sealed at a negative pressure with a sealing element, and containing stabilized reagents
Implementation Method 2
a sample container for encapsulating a sample mixture comprising the sample and at least one lysis reagent
Implementation Method 3
enabling detection of target analytes through isothermal amplification and optical detection
Implementation Method 4
a detection module in communication with the at least one vacutainer, and capable of detecting the presence of the target analytes
Data Source
AI summary
Methods and apparatuses for detecting one or more target analytes in a sample, the apparatus including (i) a sample container for encapsulating a sample mixture comprising the sample and at least one lysis reagent; (ii) at least one vacutainer sealed at a negative pressure with a sealing element, and containing stabilized reagents corresponding to detecting at least one of the target analytes; and, (iii) at least one fluid communication channel oriented to enable an engageable fluid connection of the sample mixture from the sample container to one or more of the at least one vacutainers through the sealing element of each such fluidly-connected at least one vacutainer, wherein the establishment of the engageable fluid connection with the at least one vacutainer sealed at negative pressure causes at least some of the sample mixture from the sample container to be communicated to such fluidly-connected at least one vacutainer.