Automated Sequential Incubation in Continuous Fluid Processing

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Solution Overview

Problem

Current biological fluid processing systems require separation stages between successive incubation stages or manual steps for additional incubation, which are inefficient for sequential incubation processes.

Innovation Solution

A fluid processing system with a disposable circuit and reusable device that automates sequential incubation stages through a controller actuating pumps, clamps, and a separator to execute first and second incubation stages without intervening steps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separation stages are used between successive incubation stages, then the processing can be performed with current systems, but the processing time and operational complexity increase

Engineering Contradiction:
Improvecapability to perform sequential incubationVSAvoidprocessing time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent combines multiple incubation stages into a single continuous processing loop, eliminating the need for separate separation stages between incubations. The fluid circuit allows the biological fluid to circulate through the incubation chamber multiple times sequentially, performing first, second, and subsequent incubation stages without interrupting the flow or requiring manual intervention.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system maintains continuous circulation of the biological fluid through the incubation chamber, allowing uninterrupted sequential incubation. The pump continuously drives the fluid through the circuit, and the incubation chamber remains actively engaged in the incubation process throughout multiple stages without idle separation steps.

Inventive Principle:
Principle #20Continuity of useful action

2Adaptability or versatility

If manual steps are used for additional incubation, then flexibility is maintained, but operator intervention and operational complexity increase

Engineering Contradiction:
Improveflexibility for additional incubationVSAvoidoperator intervention
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system is designed to automatically perform multiple incubation stages without operator intervention. The controller programmatically controls the pump, clamps, and incubation chamber to execute the entire sequential incubation process autonomously, eliminating the need for manual steps while maintaining flexibility through programmable parameters.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The incubation chamber serves multiple functions by performing first, second, and subsequent incubation stages within the same chamber through continuous circulation. The single chamber is reused sequentially for different incubation steps, eliminating the need for multiple separate chambers or manual transfer operations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If sequential incubation is implemented without separation stages, then processing efficiency improves, but system complexity increases

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The fluid circuit is segmented into distinct functional zones including the pump, incubation chamber, and return pathways, allowing sequential incubation to occur within a modular continuous flow system. This segmentation enables efficient multi-stage processing while maintaining manageable system architecture through functional division.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4578472A1Automated sequential incubations during fluid processing
Publication Date: 2025.07.02 FENWAL INC
  • EP4578472A1 patent drawingFigure 1
  • EP4578472A1 patent drawingFigure 2
  • EP4578472A1 patent drawingFigure 3

AI summary

A fluid processing method and an associated system are provided. The fluid processing method includes a first and second incubation stage which are performed sequentially without any intermediate steps. The fluid processing method creates a second incubation fluid product from a biological fluid.