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Related Experiment Videos

Evaluation of six oxygen concentrators.

D P Johns, P D Rochford, J A Streeton

    Thorax
    |November 1, 1985
    PubMed
    Summary

    Six oxygen concentrators were evaluated for oxygen yield and performance. Most models achieved 94-95% oxygen at 2 L/min, with consistent performance across devices for oxygen rise time and accuracy.

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    Area of Science:

    • Biomedical Engineering
    • Respiratory Therapy
    • Medical Device Evaluation

    Background:

    • Oxygen concentrators are vital for delivering supplemental oxygen.
    • Performance variability among different oxygen concentrator models necessitates thorough evaluation.

    Purpose of the Study:

    • To evaluate the performance of six oxygen concentrator models.
    • Assess oxygen yield, rise time, flow accuracy, and general characteristics.

    Main Methods:

    • Tested six oxygen concentrators (DeVO2, Dom 10, Econo 2, Hudson, Permox, Roomate) over 9-28 days.
    • Measured oxygen percentage (% O2) across flow rates (1-4 L/min).
    • Assessed 90% oxygen rise time, flow device accuracy, static outlet pressure, and components.

    Main Results:

    • Most models yielded 94-95% O2 at 2 L/min, except Permox (90.5%).
    • Dom 10, Econo 2, and Hudson showed higher O2 concentrations at flows >2 L/min.
    • All models had a 90% oxygen rise time under 10.5 minutes; flow accuracy varied, with DeVO2, Hudson, and Permox being more accurate.

    Conclusions:

    • Oxygen concentrator performance, particularly oxygen yield and flow accuracy, varies among models.
    • Molecular sieve concentrators have a maximal attainable oxygen yield of approximately 96%.

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