Respiratory Humidifier Communication for Accurate Parameter Control

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Solution Overview

Problem

Existing respiratory humidification systems operate independently, lacking effective communication between components, leading to inefficiencies and inaccuracies in parameter settings and data utilization.

Innovation Solution

Implementing electronic communication between components such as a humidifier and a flow generator, allowing for data transfer and control signals to optimize operating parameters and modes, enhancing system performance and accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If electronic communication is implemented between humidifier and flow generator, then system performance and parameter control accuracy are improved, but device complexity increases

Engineering Contradiction:
Improveparameter control accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple independent components (humidifier, flow generator, patient monitor) into an integrated respiratory support system with unified electronic communication. The humidifier is merged with the flow generator through data communication connections, allowing shared control and coordination, which improves parameter accuracy while distributing complexity across integrated modules rather than isolated units.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The humidifier is designed with multi-functionality, serving both as a standalone humidification device and as an integrated component of the respiratory support system. The electronic communication capability allows it to function independently or in coordination with other components, providing universal applicability that improves control accuracy without permanently increasing baseline complexity.

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

2Loss of information

If components operate independently with separate sensors and control processes, then device complexity is reduced, but loss of information occurs due to lack of data sharing

Engineering Contradiction:
Improvedata utilization efficiencyVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms where sensor data from the flow generator and patient monitor are communicated to the humidifier, and humidifier status is fed back to other components. This closed-loop information flow eliminates data loss by ensuring all components have access to relevant parameters, while the feedback architecture is designed to be implemented through standard communication protocols that minimize added complexity.

Inventive Principle:
Principle #23Feedback

3Reliability

If electronic communication is implemented between components, then reliability of breathing gas delivery is improved through error detection and coordinated control, but device complexity increases

Engineering Contradiction:
Improvebreathing gas delivery reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The humidifier is designed with self-service capabilities, including automatic parameter adjustment based on received data and self-diagnosis functions. The electronic communication enables the humidifier to autonomously coordinate with other components, detect errors, and maintain reliable operation without requiring complex external control systems, thereby improving reliability while limiting complexity growth.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3804796B1Respiratory humidifier communication systems and methods
Publication Date: 2025.10.01 FISHER & PAYKEL HEALTHCARE LTD
  • EP3804796B1 patent drawingFigure 1~2
  • EP3804796B1 patent drawingFigure 3~4
  • EP3804796B1 patent drawingFigure 5

AI summary

A respiratory humidification system (10) includes a humidifier (20) that is capable of electronic communication with one or more other components of the system thereby permitting transfer of data or control signals between the humidifier and other components of the system. In some systems, a flow generator (14), such as a ventilator, is provided to supply a flow of breathing gas. The humidifier and the flow generator are capable of electronic communication with one another. In some arrangements, an operating mode or parameter of the humidifier to be set or confirmed by the flow generator, either automatically or manually through a user interface of the flow generator. The humidifier can also utilize data provided by the flow generator or other system component, such as an incubator (152; fig. 8), to set or confirm an operating mode or parameter of the humidifier. In some arrangements, a user interface of the humidifier can display data from another system component, such as a nebulizer or pulse oximeter.