Diuresis Meter Assembly With Spring-Loaded Container Coupling

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Solution Overview

Problem

Existing body fluid meter assemblies suffer from unreliable and unstable connections between the collection container and the measuring unit, leading to inadvertent release and inaccurate measurements, especially when subjected to movement or shocks.

Innovation Solution

A body fluid meter assembly with a spring-loaded interlocking mechanism that securely couples a rigid collection container to a load cell, ensuring a stable connection and preventing inadvertent release, while allowing easy assembly and disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a simple coupling mechanism is used to attach the collection container to the measuring unit, then the device complexity is reduced and ease of operation is improved, but the reliability deteriorates due to inadvertent release and unstable connection

Engineering Contradiction:
Improveconnection stabilityVSAvoidcoupling mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The coupling mechanism employs a spring-loaded interlocking system where the spring provides dynamic force to maintain engagement between the collection container and measuring unit. The spring-loaded design allows the mechanism to adapt to movement and shocks while maintaining reliable connection, resolving the contradiction between simplicity and reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The coupling mechanism is divided into distinct interlocking components (locking elements, spring assembly, engagement surfaces) that work together. This segmentation allows each component to perform its specific function while maintaining overall simplicity, achieving both reliability and ease of operation.

Inventive Principle:
Principle #1Segmentation

2Measurement precision

If a rigid collection container is used, then measurement precision is improved by preventing container deformation, but the ease of operation deteriorates due to difficulty in assembly and disassembly

Engineering Contradiction:
Improvevolume measurement accuracyVSAvoidassembly ease
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The spring-loaded coupling mechanism provides dynamic engagement that secures the rigid collection container firmly to the measuring unit during measurement, ensuring precision. The same mechanism allows easy assembly and disassembly through controlled activation, resolving the contradiction between measurement accuracy and operational ease.

Inventive Principle:
Principle #15Dynamics

3Measurement precision

If the collection container is securely coupled to prevent movement, then measurement precision is improved, but the ease of operation deteriorates due to difficulty in cleaning and maintenance

Engineering Contradiction:
Improvedata collection accuracyVSAvoidcleaning ease
Core Design Contradiction:
Measurement precisionVSEase of repair

Solution Approach 1:

The secure coupling is achieved through localized interlocking elements rather than a permanent fixed connection. This segmentation allows the collection container to be firmly held during measurement while enabling easy separation for cleaning and maintenance, resolving the contradiction between measurement accuracy and maintenance ease.

Inventive Principle:
Principle #1Segmentation

4Measurement precision

If manual visual readings are used on graduations, then device complexity is reduced, but measurement precision deteriorates due to reading inaccuracies and dependency on precise time intervals

Engineering Contradiction:
Improvevolume measurement accuracyVSAvoidmeasurement system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual visual reading of graduations with an automated measurement system that uses the spring-loaded coupling mechanism's mechanical connection to directly measure volume. This substitution eliminates reading inaccuracies and time interval dependencies while keeping the overall device complexity manageable through the integrated mechanical measurement approach.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

The solution provides a robust and reliable measurement system that maintains accuracy by preventing container movement and ensuring consistent data collection, even under varying conditions.

Implementation Method 1

a spring-loaded interlocking mechanism configured to cooperate with one or more interlocking members provided on the body fluid collection container and interlock with the body fluid collection container to form a stable connection

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a body fluid meter unit comprising a load cell and a coupling mechanism configured to releasably couple the body fluid collection container to the load cell

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentUS12446812B2Body fluid meter assembly, in particular for measuring diuresis
Publication Date: 2025.10.21 DIURIFLUX MEDICAL SA
  • US12446812B2 patent drawing
  • US12446812B2 patent drawing
  • US12446812B2 patent drawing

AI summary

A body fluid meter assembly for measuring diuresis including a body fluid collection container configured to collect body fluid such as urine, a body fluid meter unit including a load cell and a coupling mechanism configured to releasably couple the collection container to the load cell, which body fluid meter unit is configured to process sensor data supplied by the load cell and derive a measurement of a quantity and/or flow rate of the body fluid in the collection container as a function of load applied on the load cell, and tubing attached to an inlet port of the collection container and configured to be connected to a source of the body fluid. The collection container is a substantially rigid container and the coupling mechanism is a spring-loaded interlocking mechanism configured to cooperate with one or more interlocking members to interlock with the collection container to form a stable connection.