Ultra-Thin Sample Chamber Dialysis Device
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Solution Overview
Problem
Dialysis processes are often time-consuming due to the reliance on diffusion across semipermeable membranes, which is dependent on the distance substances need to travel, leading to bottlenecks in applications such as medical and chemical research.
Innovation Solution
A dialysis device comprising a support, a sample chamber, and a container with a semipermeable membrane, where the sample chamber has a thickness between 100 μm and 500 μm, allowing for efficient diffusion by reducing the distance substances need to travel, thereby decreasing the time required to reach target concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional dialysis devices are used with conventional sample chamber thickness, then the device structure is simple and easy to manufacture, but the dialysis time is excessively long due to slow diffusion
Solution Approach 1:
The patent changes the physical parameter of sample chamber thickness from conventional dimensions to a specific range of 100-500 μm. This parameter change dramatically reduces the diffusion distance for substances during dialysis, thereby reducing dialysis time while maintaining a relatively simple device structure that can still be manufactured with standard techniques.
Solution Approach 2:
The patent addresses the time-dialysis contradiction by introducing a new dimensional consideration - reducing the thickness dimension of the sample chamber to the micrometer scale (100-500 μm). This dimensional change creates a ultra-thin sample chamber that enables rapid diffusion without requiring complex device architectures, thus resolving the contradiction between dialysis time and device complexity.
2Productivity
If the sample chamber thickness is reduced to 100-500 μm, then the diffusion distance is minimized and dialysis time is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a thickness range of 100-500 μm rather than a single precise value, which balances the need for reduced diffusion distance with the practical limitations of manufacturing precision. This parameter range optimization allows for efficient dialysis while accommodating variations in manufacturing tolerances.
Solution Approach 2:
The patent employs a semipermeable membrane with controlled porosity as the support structure for the sample chamber. This porous membrane structure provides mechanical support while maintaining the ultra-thin profile, and the porosity can be optimized to facilitate diffusion without requiring extremely tight thickness control, thus addressing the manufacturing precision challenge.
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 device significantly reduces the time needed for dialysis by minimizing the distance of diffusion, enhancing the efficiency of substance concentration changes across the semipermeable membrane, thus addressing the time constraints in various research applications.
Implementation Method 1
Dialysis involves the transfer of a substance across a semipermeable membrane to increase or decrease the concentration of one or more substances in a sample. Dialysis is often dependent upon diffusion to change the concentration of the substance.
Implementation Method 2
a container with a semipermeable membrane on one end
Data Source
AI summary
A dialysis and/or isotope exchange device includes a support, a sample chamber having a thickness of between 25 μm and 500 μm, and a container including a semipermeable membrane in contact with the sample chamber. Dialysis and/or isotope exchange takes less than 100,000 seconds for a concentration of a substance to reach a target concentration.