Peritoneal Dialysis Disinfection Loop with CO2 for Calcium Carbonate
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Solution Overview
Problem
Existing peritoneal dialysis systems face challenges with the production and buildup of calcium carbonate during disinfection, leading to increased waste and complexity in disposable components, which can be cumbersome and costly for patients.
Innovation Solution
The system incorporates a carbon dioxide (CO2) source to inhibit or remove calcium carbonate formation during disinfection by pressurizing the disinfection loop with CO2, using a control unit to manage pressure and temperature based on bicarbonate levels and disinfection fluid composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable components are used to prevent calcium carbonate buildup, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent changes the chemical parameters of the disinfection process by adjusting pH levels and introducing specific chemical agents that prevent calcium carbonate precipitation. This allows the use of reusable components without the risk of mineral buildup, eliminating the need for complex disposable parts while maintaining reliability.
Solution Approach 2:
The patent introduces chemical intermediaries (disinfection agents and pH modifiers) that mediate between the disinfection process and the system components. These intermediaries prevent direct interaction between calcium carbonate and the components, allowing reusable parts to remain free from buildup without requiring disposable protective elements.
2Loss of substance
If disposable components are used to avoid calcium carbonate waste, then loss of substance is reduced, but device complexity increases
Solution Approach 1:
By modifying the chemical parameters of the disinfection solution (pH, chemical composition), the patent prevents calcium carbonate formation at its source. This eliminates waste without requiring complex disposable components, as the chemical environment is controlled to be incompatible with calcium carbonate precipitation.
Solution Approach 2:
The patent extracts the calcium carbonate formation problem from the system by controlling the chemical environment to prevent its formation in the first place. Rather than dealing with the waste product through disposable components, the solution removes the possibility of the harmful substance forming through parameter control.
3Device complexity
If reusable components are used to simplify the system, then device complexity is reduced, but calcium carbonate buildup occurs
Solution Approach 1:
The patent applies parameter changes to the disinfection process, specifically controlling pH levels and chemical composition, to create an environment where calcium carbonate cannot form. This allows reusable components to be used without buildup, as the chemical parameters are maintained to prevent precipitation.
Solution Approach 2:
The patent applies preliminary anti-action by pre-treating the disinfection process with chemical agents that prevent calcium carbonate formation before it can occur. This proactive approach protects reusable components from buildup without requiring complex protective mechanisms or disposable parts.
4Loss of substance
If disinfection process is enhanced to remove calcium carbonate, then purity is improved, but use of energy increases
Solution Approach 1:
The patent performs preliminary action by preventing calcium carbonate formation during the disinfection process itself through chemical parameter control. Rather than requiring additional energy-intensive removal steps, the system prevents the problem from occurring, thereby maintaining purity without excessive energy consumption.
Solution Approach 2:
By changing the chemical parameters of the disinfection process (pH, chemical agents), the patent creates conditions where calcium carbonate is prevented from forming. This approach achieves purity through prevention rather than removal, avoiding the need for additional energy-intensive 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 approach effectively prevents and removes calcium carbonate buildup, reducing waste and simplifying the system by making most components reusable, thus minimizing setup time and costs for patients.
Implementation Method 1
a carbon dioxide (CO2) source to inhibit or remove calcium carbonate formation during disinfection by pressurizing the disinfection loop with CO2
Data Source
AI summary
A peritoneal dialysis (“PD”) system includes a PD fluid pump; a disinfection loop including the PD fluid pump, the disinfection loop including PD fluid used for disinfecting the disinfection loop; and a carbon dioxide (CO2), source positioned and arranged to supply CO2 to the disinfection loop to inhibit and/or remove the production of calcium carbonate (CaCO3) during a disinfection sequence. The PD system includes a control unit configured to open a valve to allow CO2 to be supplied, wherein the control unit may use a lookup table or algorithm to determine the desired pressure or pressure increase.