Anesthetic Vaporizer Leakage Detection via Fluid Level Monitoring
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Solution Overview
Problem
Conventional anesthetic vaporizers lack effective automatic leak detection methods, making it difficult for clinicians to identify anesthetic agent leakage, which can occur unnoticed through small changes in liquid level and requires manual, offline tests that cannot be performed during active use.
Innovation Solution
An automatic diagnostic system using an electronic fluid level sensor and controller within the anesthetic vaporizer to calculate leakage rates and infer potential leakage sites, enabling real-time detection and tracking of anesthetic agent leakage while the vaporizer is in use, and anticipating maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual leak detection methods are used, then equipment complexity is reduced, but detection precision and reliability deteriorate
Solution Approach 1:
The patent replaces manual mechanical leak detection methods with an electronic automated system. The fluid level sensor electronically monitors liquid anesthetic agent levels in the sump, and the controller automatically calculates leakage rates by comparing level measurements over time, eliminating the need for manual observation and testing while significantly improving detection precision.
Solution Approach 2:
The system performs self-diagnosis by automatically monitoring its own operation. The controller uses the fluid level sensor data to continuously assess whether leakage is occurring, enabling the vaporizer to self-monitor its integrity without requiring external manual intervention or additional complex diagnostic equipment.
2Reliability
If manual leak detection tests are performed, then device complexity remains low, but detection timeliness and continuous monitoring capability deteriorate
Solution Approach 1:
The fluid level sensor continuously monitors the liquid anesthetic agent level in the sump throughout operation, providing uninterrupted data to the controller. This continuous monitoring enables real-time leakage detection without interrupting vaporizer function, maintaining reliability while implementing automated diagnostics throughout the operational period.
Solution Approach 2:
The patent replaces intermittent manual leak tests with continuous automated electronic monitoring. The controller systematically processes continuous level measurements to detect leakage patterns, transforming discrete manual checks into an ongoing automated diagnostic process that enhances reliability without requiring complex additional hardware.
3Loss of information
If sight glass monitoring is used, then device complexity is minimized, but information completeness and diagnostic capability deteriorate
Solution Approach 1:
The fluid level sensor provides continuous feedback to the controller about the liquid level in the sump. The controller uses this feedback to calculate leakage rates by comparing level changes over time and provides automated alerts when leakage is detected, creating a closed-loop information system that delivers complete diagnostic data without adding significant complexity.
Solution Approach 2:
The patent replaces visual sight glass monitoring with electronic sensing and automated data processing. The fluid level sensor electronically measures liquid levels with greater precision than visual estimation, and the controller automatically processes this data to provide complete leakage information including rate calculations and diagnostic alerts, enhancing information completeness while maintaining simplicity.
Data Source
AI summary
Methods and systems are provided for anesthetic agent leakage diagnostics. In one embodiment, a method for diagnosing leaks in an anesthetic vaporizer includes calculating a leakage rate based on measurements of an anesthetic agent level in a sump of the anesthetic vaporizer, the measurements received from a fluid level sensor at a first time and a second time, and outputting a maintenance alert responsive to the leakage rate exceeding a threshold.