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The desflurane (Tec 6) vaporizer: design, design considerations and performance evaluation
R B Weiskopf1, D Sampson, M A Moore
1Department of Anesthesia, University of California, San Francisco 94143-0648.
British Journal of Anaesthesia
|April 1, 1994
Summary
The Tec 6 desflurane vaporizer uses electromechanical controls, enhancing safety by reducing risks of over-delivery and incorporating alarms. Its performance in oxygen and nitrous oxide mixtures is accurate and reliable for anesthesia.
Area of Science:
- Anesthesiology
- Biomedical Engineering
Background:
- Traditional anesthetic vaporizers rely on mechanical controls.
- Desflurane's unique physical properties necessitate specialized vaporizer designs.
Purpose of the Study:
- To describe the design and performance characteristics of the desflurane Tec 6 vaporizer.
- To evaluate the safety features and output accuracy of the new electromechanical design.
Main Methods:
- Design considerations for the electromechanical Tec 6 vaporizer were detailed.
- Performance testing of the vaporizer's output concentration under various conditions was conducted.
Main Results:
- The Tec 6 vaporizer utilizes electromechanical controls to manage desflurane's properties.
- Output accuracy in oxygen is comparable to mechanical vaporizers (+/- 15%).
- Output in nitrous oxide decreases but remains within acceptable clinical ranges (within 20% of dial setting or 0.5% absolute).
Conclusions:
- The electromechanical design of the Tec 6 desflurane vaporizer offers enhanced safety features, including reduced risk of accidental over-delivery and integrated alarms.
- The vaporizer demonstrates clinically acceptable performance characteristics for desflurane delivery in anesthesia.