Microfluidic Dialysis With Real-Time Dialysate Preparation for Home Use
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Solution Overview
Problem
Current dialysis systems are unsuitable for home use due to their large size, high energy consumption, water requirements, and complex flow-balancing technology, which limits patient flexibility and increases treatment duration and fatigue.
Innovation Solution
A compact, portable dialysis system that uses a microfluidic dialyzer with a water purification system capable of producing ultra-high-temperature-pasteurized water for real-time dialysate preparation, reducing water usage and energy consumption, and enabling better control over ultrafiltration and diafiltration processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If current dialysis systems are used, then dialysis treatment can be performed, but the systems are too large and bulky to fit within a typical home
Solution Approach 1:
The dialysis system is divided into separate functional modules: a dialyzer unit for blood filtration, a water purification system for dialysate preparation, and a concentrate storage system. This modular segmentation allows each component to be optimized independently and enables the system to be compacted for home use while maintaining full functionality.
Solution Approach 2:
The system transitions from batch processing (traditional large-scale dialysis) to continuous flow processing (microfluidic dialysis). This dimensional change in the processing approach enables significantly reduced system volume while maintaining treatment effectiveness, making the system suitable for home environments.
2Quantity of substance
If current dialysis systems are used, then dialysis treatment can be performed, but they use large amounts of energy and require enormous amounts of water
Solution Approach 1:
The system changes the operating parameters from conventional dialysis (high flow rates, large water volumes) to microfluidic dialysis (low flow rates, small water volumes). By operating in the microfluidic regime with flow rates measured in milliliters per minute rather than liters per minute, the system dramatically reduces both water consumption and energy requirements while maintaining effective solute removal.
Solution Approach 2:
The water purification system integrates multiple functions (filtration, heating, cooling) into a compact unit that processes only the necessary amount of water for dialysate preparation. The system recycles and reuses water efficiently, purifying only what is needed rather than requiring enormous water volumes, thereby reducing both water consumption and the energy needed for water handling.
3Ease of manufacture
If current dialysis systems are used, then dialysis treatment can be performed, but they use complex flow-balancing technology that is relatively expensive to manufacture
Solution Approach 1:
The system extracts and eliminates the complex flow-balancing technology from traditional dialysis systems. By using microfluidic principles with controlled low flow rates and pressure-driven flow through porous membranes, the system achieves effective dialysis without requiring sophisticated flow balancing mechanisms, thereby simplifying the device and reducing manufacturing costs.
Solution Approach 2:
The system replaces complex mechanical flow-balancing mechanisms with simpler pressure-driven microfluidic flow control. The porous membrane structure and low flow rate operation naturally provide flow distribution without requiring active mechanical balancing components, reducing both device complexity and manufacturing expense.
4Object-affected harmful factors
If current dialysis systems are used, then dialysis treatment can be performed, but most systems are designed with a system of solenoid valves that create high noise levels
Solution Approach 1:
The system extracts and removes solenoid valves from the dialysis system design. By using passive flow control mechanisms and pressure-driven microfluidic flow regulation, the system eliminates the noisy electromagnetic components that characterize traditional dialysis machines, thereby creating a quiet operating environment suitable for home use.
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 allows for efficient and flexible home dialysis with reduced patient burden, improved energy efficiency, and enhanced ultrafiltration control, making it more suitable for daily or nocturnal use in residential settings.
Implementation Method 1
a water purification system capable of purifying said water stream in a non-batch process... capable of producing ultra-high-temperature-pasteurized water
Implementation Method 2
the dialyzer having a membrane separating the stream of dialysate from the blood stream, the membrane facilitating dialysis of the blood stream
Implementation Method 3
the controller capable of controlling a flow rate of the dialysate stream... so as to perform one or both of the processes of ultrafiltration and hemodiafiltration
Data Source
AI summary
A dialysis system includes a filtration system capable of filtering a water stream, a water purification system capable of purifying said water stream in a non-batch process, a mixing system capable of producing a stream of dialysate from mixing one or more dialysate components with the water stream in a non-batch process, and a dialyzer system. The dialyzer may be a microfluidic dialyzer capable of being fluidly coupled to the stream of dialysate and a blood stream.