Modular Medical Gas Humidifier with Dynamic Control and UV Sterilization

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Solution Overview

Problem

Current humidifiers for medical gases lack flexibility, efficiency, and hygiene, with limitations in energy usage, germ contamination, and inadequate temperature control, leading to suboptimal patient comfort and therapy effectiveness.

Innovation Solution

A universal, modular humidifier system with adjustable operation and control algorithms for various humidification technologies, incorporating external power supply options, integrated sensors, and UV radiation for sterilization, along with improved sealing methods and contactless temperature measurement, to enhance flexibility, hygiene, and performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a specific humidification technology is selected, then the humidification effectiveness is improved, but the flexibility and adaptability of the device deteriorates

Engineering Contradiction:
Improvehumidification effectivenessVSAvoiddevice flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements a universal humidifier design that can accommodate multiple humidification technologies (passover, counter-flow, membrane, flash evaporator, bubble humidifier) through a standardized interface and control system. The device can selectively activate different humidification methods based on clinical requirements, allowing a single device to perform multiple functions while maintaining effectiveness in each mode.

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

Solution Approach 2:

The control unit dynamically adjusts operating parameters such as heating temperature, gas flow rate, and humidification intensity based on real-time sensor feedback and selected therapy mode. This dynamic adaptation allows the device to optimize performance for different patient conditions and humidification technologies without requiring separate fixed-design devices.

Inventive Principle:
Principle #15Dynamics

2Power

If the power supply unit is dimensioned for maximum energy demand, then the energy availability for all applications is improved, but the device size and cost increase

Engineering Contradiction:
Improveenergy availabilityVSAvoiddevice size
Core Design Contradiction:
PowerVSVolume of moving object

Solution Approach 1:

The power supply unit incorporates dynamic power management that adjusts its output capacity based on the actual energy demands of the connected humidification technology and therapy requirements. The control system monitors power consumption in real-time and scales power delivery accordingly, allowing the use of smaller, more compact power supplies while ensuring sufficient energy is available when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The device allows adjustment of operating parameters including heating temperature, power consumption levels, and energy distribution to different components. By optimizing these parameters based on actual clinical needs rather than maximum theoretical demand, the system reduces overall power requirements while maintaining therapeutic effectiveness.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If conventional heating methods are used, then the heating reliability is improved, but the temperature control precision and energy efficiency deteriorate

Engineering Contradiction:
Improveheating reliabilityVSAvoidtemperature control precision
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The system incorporates temperature sensors that continuously monitor the temperature of heated components and water in the humidification chamber. This feedback is transmitted to the control unit, which adjusts the heating power in real-time to maintain the desired temperature setpoint, thereby improving temperature control precision while maintaining heating reliability through active regulation.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces conventional mechanical heating control with electronic temperature regulation systems. Instead of relying solely on mechanical thermostats or manual control, the system uses electronic sensors and control circuits to precisely regulate heating elements, improving both temperature precision and energy efficiency while maintaining reliable heating performance.

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

4Ease of operation

If the humidifier is integrated into the respiration device, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveintegration convenienceVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The humidifier is designed as a modular, separable unit that can be easily attached to and detached from the respiration device. This segmentation allows the humidification function to be integrated when needed for ease of operation, while enabling the components to be separated for independent cleaning, maintenance, or sterilization, thereby managing overall system complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control unit is designed to universally manage both the respiration device functions and humidifier operations through a single interface. This multi-functional control approach allows integrated operation without requiring separate complex control systems, as the same control unit adapts to manage different functions based on the connected components.

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

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 system provides broader application coverage, improved energy efficiency, enhanced patient comfort, and reduced germ contamination, ensuring effective humidification and temperature control for medical gas treatments.

Implementation Method 1

a heating element arranged to heat the water

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a UV radiation source arranged to sterilise the water in the humidification chamber

Methodology Applied
Scientific EffectUV radiation: Radiation

Implementation Method 3

contactless temperature measurement

Methodology Applied
Scientific EffectInfrared radiation: Infrared Radiation

Data Source

PatentEP2640451B1Methods and devices in the field of treatment with medical gases
Publication Date: 2017.06.07 RESMED HUMIDIFICATION TECH
  • EP2640451B1 patent drawingFigure 1
  • EP2640451B1 patent drawingFigure 2A
  • EP2640451B1 patent drawingFigure 2B

AI summary

The present invention relates to a humidifier for humidifying medical gases, comprising a humidification module (100) including a control unit, wherein the humidification module is adapted for receiving a humidification chamber (120). Furthermore, the humidification module is further adapted to sense and/or receive information upon connection of the humidification chamber and/or additional equipment such as hoses, power supply pack.