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[Mass flow anesthesia delivery system and its application].

M Takahashi, A Ishida, H Toyooka

    Iyo Denshi to Seitai Kogaku. Japanese Journal of Medical Electronics and Biological Engineering
    |March 1, 1989
    PubMed
    Summary
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    A novel microcomputer-controlled anesthesia delivery system offers superior precision over conventional machines. This advanced anesthesia system utilizes mass flow controllers for accurate gas mixture delivery, enhancing patient safety.

    Area of Science:

    • Anesthesiology
    • Biomedical Engineering
    • Computer Science

    Context:

    • Conventional anesthesia machines rely on mechanical settings, which can limit precision.
    • Developing advanced anesthesia delivery systems is crucial for improving patient safety and procedural outcomes.
    • Microcomputer control offers enhanced capabilities for precise management of anesthetic agents.

    Purpose:

    • To develop and evaluate a microcomputer-based anesthesia delivery system.
    • To demonstrate the system's superiority in computer control compared to conventional anesthesia machines.
    • To verify the functionality and stability of the developed anesthesia system.

    Summary:

    • A microcomputer-controlled anesthesia delivery system was developed using three thermal mass flow controllers (TMFC) and one vapor source controller (VSC).

    Related Experiment Videos

  • The system precisely controls the mass flow of nitrous oxide, oxygen, and halothane vapor via electrical signals from a personal computer.
  • Real-time monitoring and compensation for gas flow variations ensure stable and accurate anesthetic mixture delivery.

    • Impact:

    • The developed system offers enhanced precision and stability in anesthesia delivery, with a measured stability of 0.05% change after 30 minutes.
    • This technology has the potential to improve the safety and efficacy of anesthetic procedures.
    • Animal experiments using mongrel dogs validated the system's functional capabilities.