Fluid Connector Verification Cap for Secure Connection Feedback

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Solution Overview

Problem

Existing fluid connection assemblies lack a reliable mechanism to verify the complete and secure connection of fluid connectors, leading to potential fluid leaks and component failure.

Innovation Solution

A verification device is integrated into a locking assurance cap, providing visual and/or electronic signals through QR codes or RFID tags to confirm the connection status, ensuring a secondary verification mechanism is triggered only when the connection is fully secured.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a retaining mechanism is used to secure the tube to the connector body, then the connection strength is improved, but there is no verification mechanism to confirm proper connection

Engineering Contradiction:
Improveconnection strengthVSAvoidconnection verification
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent implements a verification device that provides feedback on the connection status. When the locking assurance cap is properly engaged on the connector body, the verification device activates to indicate through visual (colored band) or electronic (LED, RFID, QR code) signals that the connection is secure. This feedback mechanism ensures that the retaining mechanism is functioning correctly and the tube is properly secured.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The verification device acts as an intermediary between the retaining mechanism and the user. It translates the mechanical engagement of the locking assurance cap into observable signals that confirm proper connection. The verification device includes components such as a colored band, LED indicators, or electronic tags that serve as intermediaries to communicate connection status without requiring direct inspection of the retaining mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If visual or electronic verification signals are added to confirm connection status, then connection verification reliability is improved, but device complexity increases

Engineering Contradiction:
Improveconnection verificationVSAvoidverification device complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The verification device is segmented into separate functional components: the locking assurance cap, the verification indicator (colored band, LED, or electronic tag), and the activation mechanism. This segmentation allows each component to perform its specific function independently, simplifying the overall design and manufacturing while maintaining verification reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs simple, inexpensive verification indicators such as colored bands or disposable electronic tags that provide verification functionality without requiring complex or expensive mechanisms. These components are designed to be cost-effective and easily replaceable, reducing overall device complexity while maintaining reliable connection verification.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Data Source

PatentEP4368867B1Verification device for a fluid connection assembly
Publication Date: 2025.10.29 OTIKER NJ INK
  • EP4368867B1 patent drawingFigure 1
  • EP4368867B1 patent drawingFigure 2
  • EP4368867B1 patent drawingFigure 3A~3B

AI summary

A verification assembly for a fluid connection assembly, including a retainer, including a first surface, a second surface, and at least one latch finger connected to and extending from the first surface, and a verification device, including a ring portion, at least one arm connected to and extending from the ring portion, and at least one indicator tab pivotably connected to the ring portion.