Microfluidic Platelet Coagulation Measurement via Flexible Post Deflection
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Solution Overview
Problem
Traditional diagnostic tests for platelet coagulation are complex, time-consuming, and require significant blood samples, leading to delays in treatment for trauma patients, which can increase mortality rates.
Innovation Solution
A microfluidic device with an array of microstructures, including rigid blocks and flexible posts, that measures platelet forces by inducing fluid flow and detecting deflection of the posts using magnetic or optical methods, allowing for rapid and accurate assessment of platelet coagulation at the point of care.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional diagnostic tests are used to measure platelet coagulation, then measurement precision is maintained, but device complexity and processing time increase significantly
Solution Approach 1:
The patent replaces complex mechanical and chemical diagnostic systems with a microfluidic device that uses controlled fluid flow through microchannels to activate platelets and measures coagulation through optical detection of clot formation, significantly simplifying the device while maintaining measurement precision
Solution Approach 2:
The patent changes the measurement parameter from complex biochemical analysis to simple optical detection of light transmission through the microchannel, where clot formation naturally obstructs light path, providing a direct visual measure of platelet coagulation function
2Measurement precision
If traditional diagnostic tests are used to measure platelet coagulation, then measurement precision is maintained, but processing time increases significantly
Solution Approach 1:
The patent performs preliminary platelet activation through controlled shear stress in the microchannel before measurement, allowing platelets to naturally aggregate and form clots during the flow process, so that the measurement captures real-time coagulation function without requiring extensive incubation or preparation time
Solution Approach 2:
The patent replaces time-consuming biochemical assays with rapid optical detection through the microchannel, where clot formation is continuously monitored in real-time as blood flows through the device, reducing processing time while maintaining measurement accuracy
3Measurement precision
If traditional diagnostic tests are used to measure platelet coagulation, then measurement precision is maintained, but blood sample volume increases significantly
Solution Approach 1:
The patent segments the blood sample into a small volume that flows through the microchannel, where the confined geometry ensures adequate platelet activation and clot formation even with minimal blood, while the microfluidic design concentrates the sample to maximize measurement signal
Solution Approach 2:
The patent transitions from bulk blood analysis to micro-scale flow through a narrow channel, where the high surface-to-volume ratio enhances platelet-wall interactions and clot formation efficiency, allowing precise measurement with significantly reduced blood sample volume
4Loss of time
If rapid point-of-care testing is implemented for platelet coagulation, then processing time is reduced, but device portability and operational simplicity must be improved
Solution Approach 1:
The patent uses dynamic fluid flow through the microchannel to activate platelets and form clots during the measurement process, eliminating the need for static incubation steps or complex reagent additions, which simplifies operation and enables portability while maintaining rapid processing
Solution Approach 2:
The patent allows the blood sample to self-activate platelets through natural shear stress in the microchannel and self-form clots during flow, requiring no external activation agents or complex procedural steps, making the device easy to operate and portable
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 quick and accurate detection of platelet function in emergency settings, requiring only a small blood sample and providing results in under five minutes, with a portable, battery-operated device that is simple and cost-effective.
Implementation Method 1
an array of microstructures including pairs of generally rigid blocks and generally flexible posts... measures platelet forces by inducing fluid flow and detecting deflection of the posts
Implementation Method 2
The fluid channel is configured to induce fluid flow of a biological sample, such as whole blood, through the array
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
The present technology relates generally to microfluidic devices for measuring platelet coagulation, and associated systems and methods. In some embodiments, a fluidics device includes an array of microstructures including pairs of generally rigid blocks and generally flexible posts. The fluidics device further includes at least one fluid channel configured to accept the array. The fluid channel is configured to induce fluid flow of a biological sample, such as whole blood, through the array. The fluidics device can further include a detection component configured to measure a degree of deflection of one or more of the flexible posts in the array. In some embodiments, the fluidics device comprises a handheld device and usable for point of care testing of platelet forces and coagulation.