Breathing Circuit Moisture Removal via Dry-Gas Humidity Differential
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing breathing circuits face challenges in efficiently managing moisture and condensation, with solutions like heated wires being costly and manual water collection devices posing infection risks, and permeable membranes being prone to damage and limited capacity.
Innovation Solution
A moisture removal apparatus with a dry gas conduit and feeding conduit, utilizing a humidity differential to transfer moisture through a permeable membrane or perforations, allowing for automatic and efficient condensation management without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heated wire is provided along the length of the tube to prevent condensation, then the gas remains warm and condensation is prevented, but the manufacture becomes time consuming and costly
Solution Approach 1:
The patent removes the heated wire component from the system and replaces it with a passive water collection device in the expiratory limb, eliminating the complex heating mechanism while still addressing condensation management
Solution Approach 2:
The water collection device operates automatically without requiring external power or manual intervention to heat the gas, using the natural condensation and collection process to manage moisture self-service fashion
2Quantity of substance
If a removable container is used to trap condensed water vapor, then condensation can be collected, but the device requires manual monitoring and emptying which causes infection risk
Solution Approach 1:
The device automatically collects and manages condensation without requiring manual monitoring or emptying operations, eliminating the infection risk associated with manual handling while maintaining effective condensation collection
Solution Approach 2:
The system continuously manages and removes condensation from the breathing circuit without requiring user intervention to empty containers, implementing automatic discarding of condensed moisture
3Quantity of substance
If a permeable membrane is provided to dissipate moisture to ambient air, then moisture can be removed from the breathing gas, but the membrane can be easily punctured or damaged
Solution Approach 1:
The patent removes the permeable membrane component from the system and replaces it with a water collection device that passively collects condensation without requiring a fragile membrane, eliminating the puncture and damage risk while maintaining moisture removal capability
4Quantity of substance
If a thin walled permeable membrane is used for moisture transmission, then moisture can be transmitted to ambient air, but the capacity for moisture dissipation is limited due to high ambient humidity
Solution Approach 1:
The patent removes the permeable membrane approach and implements a water collection device that actively collects condensation regardless of ambient humidity conditions, overcoming the limitation of passive moisture dissipation in high humidity environments
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 apparatus effectively reduces condensation and moisture in breathing circuits, protecting against damage and eliminating the need for manual handling, while enhancing moisture removal capacity and safety.
Implementation Method 1
a moisture transmission pathway configured to enable transfer of moisture from the breathing gas to the dry gas based on the humidity differential
Implementation Method 2
a permeable membrane in the breathing circuit tubing which is permeable to water vapor but impermeable to liquid water
Data Source
AI summary
A moisture removal apparatus for a breathing circuit may include a breathing gas conduit configured to receive a flow of breathing gas having a first humidity level. The apparatus may include a dry gas conduit adjacent to at least a portion of the breathing gas conduit, the dry gas conduit configured to receive a flow of dry gas having a second humidity level lower than the first humidity level. The apparatus may also include a feeding conduit extending through at least a portion of the dry gas conduit, the feeding conduit configured to introduce the dry gas into the dry gas conduit. The apparatus may further include a moisture transmission pathway configured to enable transfer of moisture from the breathing gas to the dry gas based on the humidity differential.