Design of a Novel Dual-function Spacer Valve for Selective Aerosol Size Filtering and Measuring Peak Expiratory Flow Rate

Key Points

• To design and validate a valve that filters aerosols while measuring peak expiratory flow rate (PEFR).
• Used computational modeling to test valve design
• Integrated aerosol filtration with PEFR measurement
• Validated design for inhalation-actuated functionality
• Demonstrated feasibility of the dual-function valve
• Validated effective aerosol filtration
• Showed reliable PEFR monitoring capability