Anesthesia Breathing System Gravity Drainage
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Solution Overview
Problem
Existing anesthesia machine breathing systems face challenges in effectively removing water condensate, which can lead to bacterial growth and interfere with sensor accuracy and patient breathing resistance, with current solutions being either costly or requiring regular maintenance.
Innovation Solution
A breathing system design for anesthesia machines that includes a CO2 canister positioned below an operation mode switch, allowing condensate water to flow and collect via gravity, eliminating the need for separate water collection cups and reducing the risk of bacterial growth without additional costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate water collecting cup is used to collect condensate water, then water condensate can be collected and removed, but the device complexity increases and additional maintenance is required
Solution Approach 1:
The patent combines the water collection function with the CO2 canister by positioning the canister below the operation mode switch. The CO2 canister serves dual purposes: absorbing carbon dioxide and collecting condensate water that flows through the breathing system. This integration eliminates the need for a separate water collecting cup, reducing device complexity while maintaining effective condensate removal and bacterial growth prevention.
2Reliability
If a tubular heat and moisture exchanger is used to condense moisture, then moisture can be removed from the breathing system, but the cost increases and the equipment size increases
Solution Approach 1:
The patent utilizes the existing CO2 canister and the natural condensation process within the breathing system to remove moisture. The condensate water formed during normal operation flows down and collects in the CO2 canister, which is already positioned at a low point in the system. This self-service approach eliminates the need for additional active moisture removal devices, keeping the equipment compact and cost-effective while maintaining reliable moisture removal.
3Device complexity
If water condensate is allowed to accumulate in the breathing system, then no additional collection devices are needed, but sensor accuracy deteriorates and patient work of breathing increases
Solution Approach 1:
The patent positions the CO2 canister at a low point in the breathing system, creating a gravitational potential gradient that facilitates natural drainage of condensate water. The canister is positioned below the operation mode switch and other components, allowing condensate to flow down through gravity to the collection point. This passive drainage system maintains sensor accuracy and reduces patient work of breathing without requiring active pumping or complex drainage mechanisms.
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
Effectively discharges condensate water from the breathing system, preventing bacterial growth and maintaining sensor accuracy without additional costs or complex maintenance, ensuring efficient operation and patient safety.
Implementation Method 1
The CO2 canister is positioned below the operation mode switch, so as to collect the water flowing through the operation mode switch
Data Source
AI summary
A breathing system for an anesthesia machine is provided, which comprises an operation mode switch, a CO2 canister, a bellows, a patient inspiratory branch and a patient expiratory branch. The operation mode switch comprises a vent communicating with the patient inspiratory branch, a vent communicating with the patient expiratory branch, a vent communicating with the bellows, and a vent communicating with the CO2 canister. The CO2 canister is positioned below the operation mode switch, so as to collect the water flowing through the operation mode switch.