Blood Circuit Closed-Loop Drainage After Extracorporeal Treatment

The patent applies universality by enabling the conventional line set to perform multiple functions: it can be configured to form a closed loop for drainage purposes using existing components (withdrawal line, return line, and container ports) without requiring specialized dedicated components. This allows the same line set to serve both during treatment and for post-treatment drainage operations.

The patent extracts the drainage function from the treatment function by separating the drainage operation into a distinct phase that uses the same line set components in a different configuration. The container with multiple ports is used to temporarily hold and facilitate drainage of residual blood, extracting the drainage operation from the treatment protocol.

The patent applies preliminary action by preparing the container with multiple ports and configuring the line set in advance to form a closed loop before the drainage operation begins. The container is pre-positioned and the line set is pre-configured, so that when drainage is needed, the system is already prepared and can be activated immediately without complex assembly during the drainage process.

The patent uses the container with multiple ports as an intermediary device that facilitates drainage. The container serves as a mediator between the line set and the residual blood in the circuit, providing a controlled environment for drainage while maintaining simplicity of operation. The multiple ports on the container enable controlled fluid communication during the drainage phase.

The patent eliminates the need for specialized line sets by making the conventional line set universal for both treatment and drainage operations. The same withdrawal line, return line, and container ports are used to achieve drainage control, thereby simplifying manufacturing and reducing logistical requirements for dialysis clinics.

The patent utilizes disposable conventional line sets and single-use containers that can be easily manufactured and discarded. This approach avoids the need for expensive, complex specialized line sets that would require dedicated storage and handling infrastructure. The simplicity of the components reduces both manufacturing complexity and logistical burden.

The patent enables the system to perform drainage automatically without requiring complex manual intervention. The control system automatically manages the drainage process by controlling fluid communication between the container ports and the line set, allowing the system to service itself and eliminating the need for complex manual draining procedures while maintaining simplicity.

The patent incorporates feedback mechanisms in the control system to monitor and regulate the drainage process. Pressure sensors and flow monitoring enable the control system to adjust drainage parameters automatically, improving productivity while keeping the overall system simple. The feedback loop ensures efficient drainage without requiring complex manual control.