Bidirectional Port Adsorbing Unit for Waste Anesthetic Gas Collection
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Solution Overview
Problem
Existing methods for collecting and managing waste anesthetic gases from anesthesia delivery systems often result in leakage into the ambient environment, posing health risks to healthcare personnel, and current solutions are either inefficient, costly, or unsuitable for high-flow scenarios due to high flow resistance and frequent replacement needs.
Innovation Solution
A compact apparatus with a gas collection chamber and bidirectional port equipped with an adsorbing unit, connected to both the anesthesia delivery system and a vacuum system, which directs waste anesthetic gases through an adsorbing filter to prevent ambient release and includes a safety valve and flowmeter to ensure continuous operation and indicate vacuum system connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central vacuum system is used to collect waste anesthetic gases, then the gases can be evacuated from the facility, but leakage occurs when peak flows exceed evacuation capacity or when the vacuum system is disconnected
Solution Approach 1:
The bidirectional port with adsorbing unit provides preliminary protection by capturing anesthetic gases before they can leak into the ambient environment. The adsorbing unit is positioned to intercept gases in both directions, preventing harmful effects before they occur.
Solution Approach 2:
The gas collection chamber acts as a buffer volume that cushions against sudden peak flows. When the vacuum system is overloaded or disconnected, the chamber temporarily holds the gases, preventing immediate leakage while the bidirectional port with adsorbing unit provides secondary protection.
2Object-generated harmful factors
If activated charcoal cartridges are used to adsorb anesthetic gases, then gas removal efficiency reaches approximately 95%, but the cartridges have large size, high flow resistance, and require frequent replacement
Solution Approach 1:
The bidirectional port merges the adsorbing function with the vacuum system connection point. This integration allows the adsorbing unit to handle gases in both directions (from the anesthesia machine and from the environment), eliminating the need for separate adsorption devices and reducing overall system complexity.
Solution Approach 2:
The bidirectional port design allows dynamic adaptation to different operating conditions. The port automatically directs gas flow through the adsorbing unit regardless of flow direction or vacuum system status, providing flexible protection without requiring manual intervention or complex control mechanisms.
3Object-generated harmful factors
If bacteria filters are used to prevent gas escape, then they provide filtered venting, but they have high flow resistance making them unsuitable for handling peak flows
Solution Approach 1:
The adsorbing unit in the bidirectional port provides localized adsorption capacity specifically at the point where gases could escape to the environment. This targeted approach allows effective anesthetic gas capture without requiring high flow resistance across the entire gas collection path, preserving peak flow handling capacity.
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 prevents the release of anesthetic gases into the environment, even during peak flows and when the vacuum system is overloaded or disconnected, with a long service life and reduced pressure resistance, ensuring safer working conditions and cost-effectiveness.
Implementation Method 1
The bidirectional port comprises an adsorbing unit, and fluidly connects the gas collection chamber with an ambient environment surrounding the gas collection chamber
Data Source
Figure 1~2
Figure 3~4
AI summary
An apparatus (200) for collection of waste anesthetic gases, and a method of using such an apparatus are disclosed. The apparatus (200) has a gas collection chamber (60) with an input port (51, 61) to be connected to an exhaust of an anesthesia delivery system (4) for receiving a first gas flow (70) therefrom which includes a waste anesthetic gas component; an output port (62) from the gas collection chamber (60) to be connected to a vacuum system (8) for evacuation of an evacuation gas flow (71) from the gas collection chamber (60); and a bidirectional port (63) to and from the gas collection chamber (60), which has an adsorbing unit (21) connecting the gas collection chamber (60) with an ambient environment surrounding the gas collection chamber (60). The apparatus (200) provides for safe prevention of discharge of exhaled anesthetic gases into an ambient atmosphere surrounding the apparatus (200).