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Related Concept Videos

Inhaled Medications01:23

Inhaled Medications

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Inhaled medications are crucial for managing chronic obstructive pulmonary disease (COPD) and asthma. They are essential for effective treatment and control, ensuring optimal respiratory health and well-being. Inhaled medication delivers drugs directly to the lungs, providing a rapid onset of action and reducing systemic side effects compared to oral or injectable medications. Three primary types of inhalation devices are used to administer these medications: nebulizers, metered-dose inhalers...
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Drug Delivery: Miscellaneous Routes01:22

Drug Delivery: Miscellaneous Routes

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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
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Related Experiment Video

Updated: Apr 26, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
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Faraday instability-based micro droplet ejection for inhalation drug delivery.

C S Tsai, R W Mao, S K Lin

    Technology
    |July 22, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A novel ultrasonic nozzle creates fine, uniform drug droplets for inhalation. This pocket-sized nebulizer technology offers a clog-free, low-power solution for pulmonary drug delivery.

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    Area of Science:

    • Biomedical Engineering
    • Materials Science
    • Fluid Dynamics

    Background:

    • Current pulmonary drug delivery devices face limitations in efficiency and portability.
    • There is a need for advanced nebulizer technology to improve patient outcomes.

    Purpose of the Study:

    • To introduce a new ultrasonic nebulizer technology for pulmonary drug delivery.
    • To demonstrate the scientific principles and engineering of a novel device.

    Main Methods:

    • Development of a clog-free, silicon-based ultrasonic nozzle utilizing multiple Fourier horns.
    • Excitation of megahertz (MHz) Faraday waves on a liquid layer for droplet generation.
    • Characterization of droplet size, output rate, and power consumption.

    Main Results:

    • The device produces monodisperse droplets in the 2-5 µm range.
    • Achieved efficient aerosolization at low electrical drive power (<1.0 W).
    • Demonstrated successful nebulization of various pulmonary drugs with desirable aerosol characteristics.

    Conclusions:

    • The pocket-sized ultrasonic nebulizer represents a significant advancement in inhalation therapy.
    • The technology shows strong potential for commercialization and improved patient care.