Dialysis Fluid Preparation Circuit for Sterile Point-of-Care Mixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing peritoneal dialysis systems require pre-packaged dialysis fluid bags, limiting flexibility and increasing costs, while existing point-of-care (POC) systems lack automation and compatibility with various dialysis cycles.
Innovation Solution
A system for preparing dialysis fluid at the point of care using a daily sterile disposable fluid circuit and long-term concentrate containers, ensuring compatibility with any dialysis cycler without modification, and incorporating automated mixing and quality control to ensure accurate medicament preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-packaged dialysis fluid bags are used, then sterility and ease of use are ensured, but flexibility and cost-effectiveness are reduced
Solution Approach 1:
The system divides the dialysis fluid preparation into separate sterile components (concentrate containers and water source) that are combined at the point of care. The fluid circuit is segmented into disposable sterile portions and reusable non-sterile portions, allowing sterility to be maintained while enabling flexibility in fluid preparation and cycler compatibility.
2Reliability
If pre-packaged dialysis fluid bags are used, then sterility is ensured, but cost and waste increase
Solution Approach 1:
The system changes the concentration parameter of the dialysis fluid, using concentrated formulations that are diluted at the point of care. This allows smaller, less wasteful container sizes while maintaining the required sterility, and enables more flexible dosing and preparation quantities to reduce waste.
3Manufacturing precision
If automated mixing and quality control are implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system incorporates automated self-service features including automated mixing of concentrates, integrated quality control sensors that automatically monitor fluid parameters, and self-regulating delivery mechanisms. This automation achieves high manufacturing precision while the modular design keeps operational complexity manageable for end users.
4Adaptability or versatility
If a system prepares medical fluid without requiring cycler customization, then adaptability is improved, but integration challenges increase
Solution Approach 1:
The fluid preparation system is designed with universal interfaces and standardized connection protocols that are compatible with multiple cycler types. The system performs multiple functions (concentrate storage, water mixing, fluid preparation, quality control, and delivery) through integrated components that can interface with various external cyclers without requiring custom modifications.
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 safe, automated, and cost-effective preparation of dialysis fluid at the POC, ensuring compatibility with various dialysis cycles and reducing waste by using disposable components.
Implementation Method 1
Osmotic exchange with the patient's blood occurs across the peritoneal membrane, removing urea and other toxins and excess water from the blood
Implementation Method 2
The removal of excess water results in a higher volume of fluid being removed from the patient than is infused. The net excess is called ultrafiltrate, and the process of removal is called ultrafiltration
Data Source
AI summary
A system for preparing a medicament for use by a medicament user includes a proportioning machine with a controller and pumping and clamping actuators to engage a fluid circuit having pumping and clamping portions that engage with respective actuators of the proportioning machine. The fluid circuit includes a mixing container that is initially empty and later filled with a concentrated medicament from a concentrate container. The proportioning machine is configured to receive purified water and to mix it with the concentrated medicament to produce a medicament and to output the medicament to a medicament consumer in such a way that to the medicament consumer the medicament appears to be provided from a bag of medicament.