Respiratory Gas Humidification System with Dynamic Breathing Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current breathing gas humidification systems cannot adapt to the individual and dynamic breathing activity of patients, leading to inadequate conditioning during inhalation and oversaturation during exhalation, which can result in germ colonization and inefficient patient care.
Innovation Solution
A breathing gas humidification system with a first sensor system that measures patient breathing activity and a control unit to adjust the amount of fluid evaporated by a pump, ensuring real-time adaptation to the patient's breathing patterns, and a second sensor system within the gas supply to monitor humidity and temperature for precise conditioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the humidifier operates continuously to ensure sufficient humidity, then the humidity level is maintained, but water vapor condenses on the ventilation tube walls during exhalation, promoting microorganism growth
Solution Approach 1:
The humidifier dynamically adjusts its operation between active vaporization during inhalation and inactive state during exhalation, transitioning between different operational modes to match the patient's breathing cycle and prevent condensation-related harmful effects
Solution Approach 2:
The humidifier operates periodically synchronized with the patient's breathing rhythm, activating during inhalation phases and deactivating during exhalation phases, thereby delivering water vapor only when needed and avoiding oversaturation that leads to condensation and microorganism growth
2Quantity of substance
If the humidifier activates quickly to condition respiratory gas at the start of inspiration, then adequate humidity is provided, but the control system requires time to activate the evaporation unit, resulting in delayed response and unconditioned gas delivery
Solution Approach 1:
The control system anticipates the patient's inhalation based on detected breathing patterns and activates the evaporation unit before the actual inhalation begins, ensuring that water vapor is already available in the humidification chamber when the patient inhales, thereby eliminating the activation delay
Solution Approach 2:
The system uses feedback from the breathing activity sensor to detect the start of inhalation and adjusts the evaporation unit activation timing accordingly, creating a closed-loop control that synchronizes humidifier operation with patient breathing to minimize response time
3Object-generated harmful factors
If the humidifier is positioned closer to the patient to reduce condensation risk, then condensation in the respiratory gas supply is reduced, but the device complexity increases due to integration requirements
Solution Approach 1:
The humidification system is merged with the ventilator system by integrating the humidifier directly into the respiratory gas supply line of the ventilator, allowing close positioning to the patient while sharing the ventilator's control and monitoring infrastructure, thereby reducing overall system complexity
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
This system ensures optimal conditioning of breathing gas in real-time, reducing the risk of condensation and germ colonization, and improving patient care by providing the right amount of humidity and temperature, thus enhancing respiratory health.
Implementation Method 1
a specific amount of water is heated and evaporated by a heating plate in a humidification chamber
Implementation Method 2
The liquid is pumped from a reservoir inside or outside the carrier gas line to a vaporization device with a heating element
Implementation Method 3
The sensor can detect temperature fluctuations within the carrier gas system that occur when the patient breathes
Implementation Method 4
When a patient inhales, the respiratory gas flows through the moisture exchanger and absorbs the accumulated moisture
Implementation Method 5
This overproduction can cause the water vapor to condense on the walls of the ventilation tube
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Respiratory gas humidification system (5) for conditioning respiratory gas during ventilation of patients (12), comprising a fluid reservoir (9), more particularly a water reservoir, providing a fluid stock, an atomizer (6) for atomizing a supplied fluid (14) in conjunction with a respiratory gas supply unit (2) leading to the patient (12), a pump (7) for pumping a defined amount of fluid (14) from the fluid reservoir (9) to the atomizer (6), a first sensor system (100) having at least one, preferably a plurality of sensors for detecting the respiratory activity of the patient (12), and a control unit (11) for controlling the respiratory gas humidification system (5). The pump (7) supplies, depending on the respiratory activity of the patient (12), the atomizer (6) with an amount of fluid (14), and the atomizer (6) atomizes this amount and supplies the humidified respiratory gas to the patient. The first sensor system (100) comprises a sensor (10) acquiring information relating to the spontaneous respiratory effort of the patient (12), or a mechanical ventilator (1) produces information relating to the respiratory activity of the mechanical ventilator (1) and the pump (7) meters out a fluid amount depending on the information and the atomizer (6) atomizes the fluid amount.