External Sonication Cartridge Reader for Low-Heat Sample Disruption
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Solution Overview
Problem
In less developed countries, there is a lack of reliable diagnostic services for conditions like hemoglobin disorders due to insufficient infrastructure, trained personnel, and unreliable power sources, leading to inconclusive or delayed diagnoses, and current sonication methods are inefficient and prone to environmental variations.
Innovation Solution
A point-of-care diagnostic system with a cartridge and reader that uses external sonication to disrupt samples effectively, minimizing heat generation and environmental sensitivity, and includes a flexible seal to resist contamination, while processing samples with target materials unresponsive to magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct sonication or wet sonication is used to disrupt sample components, then sample disruption is achieved, but heat generation increases and energy transfer efficiency decreases
Solution Approach 1:
The patent introduces a sonication bath as an intermediary medium between the ultrasonic generator and the sample. The bath contains a sonication probe that transmits ultrasonic vibrations through the fluid medium to the sample container, enabling indirect sonication. This intermediary approach allows energy transfer while minimizing direct contact between the probe and sample, thereby reducing heat generation and improving energy transfer efficiency.
Solution Approach 2:
The patent replaces direct mechanical contact sonication with acoustic field-based sonication. Instead of the probe directly touching and mechanically disrupting the sample, the system uses ultrasonic waves transmitted through the sonication bath fluid to create cavitation and mechanical disruption within the sample. This substitution of mechanical contact with acoustic field interaction reduces heat generation while maintaining disruption effectiveness.
2Productivity
If point-of-care diagnostic devices are implemented in less developed countries, then timely and cost-effective care is provided, but environmental variations affect test result consistency
Solution Approach 1:
The patent employs parameter changes to compensate for environmental variations. The system includes environmental sensors that detect temperature, humidity, and other conditions, and the diagnostic method incorporates correction factors or adjusted parameters based on these environmental readings. This allows the test results to remain consistent and reliable despite variations in environmental conditions, enabling accurate diagnostics in diverse settings.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors environmental conditions and adjusts the diagnostic process accordingly. Environmental sensors provide real-time data about temperature and humidity, which are fed back to the system to modify test parameters or correction factors. This feedback loop ensures that test results remain accurate and consistent despite changing environmental conditions, enhancing the reliability of point-of-care diagnostics in less developed countries.
3Reliability
If current sonication methods are used with varying sample viscosities, then sample disruption is achieved, but energy transfer efficiency decreases and heat generation increases
Solution Approach 1:
The patent applies dynamics by making the sonication system adaptable to varying sample conditions. The system includes adjustable parameters such as variable ultrasonic power levels, adjustable sonication duration, and modifiable probe-to-sample distance. This dynamic adjustment capability allows the system to optimize energy transfer efficiency for different sample viscosities and densities, preventing excessive heat generation while maintaining effective disruption across diverse sample types.
Solution Approach 2:
The patent utilizes parameter changes to optimize energy transfer for samples of varying viscosity. The system can adjust ultrasonic frequency, power level, and sonication duration based on sample characteristics. By changing these parameters dynamically, the system maintains high energy transfer efficiency whether the sample is thin or viscous, reducing the risk of heat generation while ensuring effective disruption for all sample types.
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 system provides timely, accurate, and cost-effective diagnostics resistant to environmental conditions, ensuring efficient sample disruption and data collection, even in challenging environments.
Implementation Method 1
External sonication is effective in maximizing sample content disruption while optimizing energy transfer into the sample, minimizing heat generation in the sample
Implementation Method 2
target materials that are unresponsive to an applied magnetic field in their normal state can be processed so that the materials respond to the applied magnetic field
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
A point-of-care diagnostic system that includes a cartridge and a reader. The cartridge can contain a patient sample, such as a blood sample. The cartridge is inserted into the reader and the patient sample is analyzed. The sample can be processed for data collection and analysis to provide interpretative results indicative of a disorder, condition, disease and/or infection of the patient. Processing can include external sonication and conjugating non-magnetic target material with magnetic nanoparticles and non-magnetic solids.