Density-Based Suspension Separation Using Displacement Fluid
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Solution Overview
Problem
Current methods for analyzing suspensions, such as blood samples, face challenges in detecting and isolating materials of interest with low concentrations, as existing techniques are often ineffective for identifying rare components.
Innovation Solution
A system comprising a processing vessel, displacement fluid, and a tube with a funnel and cannula structure is used for density-based separation, where the displacement fluid with a higher density than the target material is employed to extract and isolate the target material through centrifugation, allowing for the separation and analysis of rare components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional analysis techniques are used to examine blood samples, then common components can be detected, but rare materials of interest with low concentrations cannot be effectively detected or isolated
Solution Approach 1:
The blood sample is segmented into different density layers through centrifugation, with the displacement fluid creating a density gradient that separates target materials from the bulk suspension, allowing rare components to be isolated in specific layers
Solution Approach 2:
A displacement fluid with intermediate density serves as a mediator between the target material and the surrounding suspension medium, enabling density-based separation that concentrates rare target materials for improved detection
2Measurement precision
If density-based separation with displacement fluid is used, then rare target materials can be effectively isolated, but the device complexity increases
Solution Approach 1:
The processing vessel with displacement fluid is nested within the centrifuge rotor, and the target material suspension is introduced into this nested system, creating a compact multi-level structure that achieves complex separation functionality within a confined space
Solution Approach 2:
The system uses the inherent density differences between target materials and suspension medium, combined with centrifugal force, to achieve automatic separation without requiring complex external control mechanisms or additional processing steps
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
This method enables the effective separation and analysis of target materials from suspensions by utilizing density differences, enhancing the detection and isolation of rare components within suspensions, thereby improving the analysis of blood samples and similar biological materials.
Implementation Method 1
displacement fluid with a higher density than the target material is employed to extract and isolate the target material through centrifugation
Implementation Method 2
extract and isolate the target material through centrifugation
Data Source
AI summary
This disclosure is directed to an apparatus, system and method for retrieving target material from a suspension. A system includes a processing vessel, a displacement fluid, and a tube. The tube includes a funnel, a cannula, and a cavity. The cannula allows for fluid communication between the funnel and the cavity, such that the processing vessel is inserted into the cavity, and the cannula extends into the processing vessel.