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Related Experiment Videos

A simple ventilator suitable for respiratory gas studies.

C P Heneghan, D D Martindale, J P Blackburn

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |April 1, 1978
    PubMed
    Summary
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    A novel, simple ventilator utilizes a spring-loaded bellows and solenoid valves for precise respiratory control. This device is ideal for animal respiratory gas studies and adaptable for human applications.

    Area of Science:

    • Biomedical Engineering
    • Respiratory Physiology

    Background:

    • Accurate control of respiratory parameters is crucial for physiological studies.
    • Existing ventilators may introduce dead space or gas compression, affecting study accuracy.

    Purpose of the Study:

    • To describe a simple, precise ventilator for respiratory gas studies.
    • To minimize dead space and gas compression effects in mechanical ventilation.

    Main Methods:

    • A spring-loaded bellows system filled from a compressed gas supply.
    • Solenoid valves controlled by timers regulate gas outflow.
    • Valves positioned near the subject to reduce dead space and gas compression.

    Main Results:

    • The ventilator functions as a minute volume divider.

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  • Precise valve timing ensures distinct inspiration and expiration phases.
  • The system effectively minimizes dead space and gas compression.

    • Conclusions:

    • The described ventilator offers a simple yet effective solution for controlled respiration.
    • Its design is suitable for animal respiratory gas studies.
    • Potential for modification for human use exists.