Immature Platelet Enumeration via DC Impedance and VCS
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Solution Overview
Problem
Current methods for enumerating immature platelets in medical diagnostics, such as flow cytometry, are often expensive, time-consuming, and lack adequate quality control and standardization, necessitating improved techniques for assessing platelet conditions in patients.
Innovation Solution
The use of Volume Conductivity Scatter (VCS) parameters in combination with Complete Blood Cell Count (CBC) parameters to provide reliable screening approaches for platelet analysis, employing hematology systems like the Beckman Coulter's UniCel® DxH™ 800 Cellular Analysis System to accurately predict platelet conditions and tailor therapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If flow cytometry methods are used to measure immature platelets, then measurement capability is achieved, but cost increases and time consumption increases
Solution Approach 1:
The patent replaces flow cytometry (an optical/electromagnetic system requiring fluorescence detection) with electrical impedance measurement. The impedance-based system measures platelet properties through electrical properties rather than optical properties, eliminating the need for complex optical systems and fluorescence dyes while reducing measurement time and cost.
Solution Approach 2:
The patent employs simple, inexpensive electrical impedance measurement technology instead of expensive flow cytometry equipment. The impedance measurement system uses basic electrical components and standard hematology analyzer hardware, making it a cost-effective, accessible solution that doesn't require specialized expensive instrumentation.
2Measurement precision
If flow cytometry methods are used to measure immature platelets, then measurement capability is achieved, but device complexity increases
Solution Approach 1:
The patent substitutes the complex optical detection system of flow cytometry with a simple electrical impedance measurement system. The impedance method uses basic electrical circuits and signal processing that are inherently simpler than the optical lasers, photodetectors, and fluorescence filtering required by flow cytometry, thereby reducing device complexity while maintaining measurement capability.
Solution Approach 2:
The patent extracts and eliminates the unnecessary complex components from the measurement system. By using impedance measurement, the system removes the need for fluorescence dyes, complex optical paths, and specialized detectors, retaining only the essential measurement function through a simpler electrical property-based approach.
3Measurement precision
If flow cytometry methods are used to measure immature platelets, then measurement capability is achieved, but quality control and standardization deteriorate
Solution Approach 1:
The patent changes the measurement parameter from optical properties (fluorescence intensity) to electrical properties (impedance). Electrical impedance is an intrinsic physical property that is more stable and less prone to variability than fluorescence signals, which can be affected by dye concentration, photobleaching, and instrument alignment. This parameter change improves measurement reliability and standardization.
Solution Approach 2:
The patent achieves more homogeneous and consistent measurements through impedance analysis. Electrical impedance provides a uniform measurement approach that is less susceptible to operator technique variations and instrument calibration issues compared to flow cytometry, thereby improving quality control and standardization across different laboratories and instruments.
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 prediction of platelet conditions, facilitating early detection of abnormalities and effective treatment strategies for thrombocytopenia and other disorders, with the ability to analyze thousands of cells in seconds and provide high-resolution, sensitive results without the need for expensive dyes or fluorescence techniques.
Implementation Method 1
a light detection assembly optically coupled to the cell interrogation zone so as to measure light scattered by and transmitted through the irradiated cells of the biological sample
Implementation Method 2
an electrode assembly configured to measure direct current (DC) impedance of cells of the biological sample passing individually through the cell interrogation zone
Data Source
AI summary
Embodiments of the present invention encompass automated systems and methods for analyzing immature platelet parameters in an individual based on a biological sample obtained from blood of the individual. Exemplary techniques involve correlating aspects of direct current (DC) impedance, radiofrequency (RF) conductivity, and/or light measurement data obtained from the biological sample with an evaluation of immature platelet conditions in the individual.