Metered Dose Inhaler, Spacer/Diffuser

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Design an efficient, low-cost, FDA approved, inhalation therapy drug delivery device for volume production that:

  • Outperforms competitive devices.
  • Reduces drug plate-out due to static charge.
  • Improves drug dispersion in the air steam.
  • Is usable by a broad range of patients.

Engineering Tools and Prototype Fabrication


  • Acquire and evaluate rigid and elastomeric parts using stereolithography.
  • Develop Materials Selection Criteria.
  • Anodized aluminum alloy to meet FDA toxicity requirements.
  • Chemical resistant, steam resistant, transparent thermoplastic, thermoset elastometer, adhesive for metal/plastic bonded joint and adhesive-backed label materials.

Design Features:


  • Employs an ATI designed, one piece two-way valve.
  • Product design uses a snap-together assembly for easy cleaning.
  • Mates with metered dose inhalers and accessories.
  • Impact resistant.
  • Can be sterilized in a steam autoclave.

Manufacturing Support:


  • Identify metal part supplier.
  • Identify molding supplier for thermoplastic and thermoset parts.
  • Exported digital 3-D files for tool path and tool build.
  • Evaluated steam resistance for thermoplastic materials, adhesives, and labels.
  • Design and support fabrication of test fixtures.

Personal Pill Dispenser