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Related Experiment Videos

New propellant-free technologies under investigation.

M Dolovich1

  • 1Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada. mdolovic@fhs.mcmaster.ca

Journal of Aerosol Medicine : the Official Journal of the International Society for Aerosols in Medicine
|January 6, 2000
PubMed
Summary

The development of advanced inhaler technologies, including solution inhalers and dry powder inhalers (DPIs), offers new ways to deliver diverse medications. Patient usability and clinical benefit are key factors in selecting the optimal inhalation device.

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Area of Science:

  • Pharmaceutical Technology
  • Respiratory Medicine
  • Drug Delivery Systems

Background:

  • Inhaler use has expanded beyond traditional respiratory drugs to include proteins, peptides, and analgesics.
  • This expansion has driven innovation in inhaler design and aerosolization technologies.
  • Various inhaler types offer distinct advantages and features for drug delivery.

Purpose of the Study:

  • To review and classify novel solution inhaler and dry powder inhaler (DPI) technologies.
  • To highlight the factors influencing the choice of inhalation devices.
  • To emphasize the importance of clinical benefit and patient usability.

Main Methods:

  • Categorization of novel solution aerosolization devices into adaptive aerosol delivery, metered dose liquid inhalers (MDLIs), and breath-actuated nebulizers.

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  • Classification of DPIs based on drug storage and dispensing mechanisms: single capsules, bulk reservoir, or multiunit-dose.
  • Discussion of factors influencing system selection for liquid solution delivery.

    • Main Results:

    • Solution inhalers are classified into three main novel device types.
    • Dry powder inhalers (DPIs) are categorized by their drug storage and delivery methods.
    • Key considerations for selecting an inhalation system include ease of use, convenience, aerosol properties, dose delivery, and drug deposition.

    Conclusions:

    • The choice of an inhalation system significantly impacts clinical benefit.
    • Patient-centered factors such as ease of use and maintenance are paramount.
    • Physicians and patients should consider alternative systems if a chosen device is ineffective.