Air flow recorder, generator and analysis system for inhalation device testing and modeling

摘要

An air flow device for use in recording, analyzing, replicating, and generating breathing patterns. A piping structure provides receipt and transfer of pressurized gas through the device. The piping structure has a source connection for receiving a single constant source of pressurized gas. Aspirators are connected to the piping structure for receiving pressurized gas from the source connection and for selectively creating an output pressurization comprising a positive pressure gas flow and a negative pressure gas flow at a proportional solenoid valve. A balancing valve is connected to the piping structure for controlling and calibrating the output pressurization of the aspirators. A control system provides control of the aspirators, the balancing valve, and a solenoid valve. A solenoid valve is mechanically connected to the piping structure with pneumatic input and output connections and electronically connected to the control system with data input and output connections. The solenoid valve provides patterned pneumatic flow between the aspirators and a system model according to air flow commands received by the solenoid from the control system. The system model, in one embodiment, is a breath actuated inhaler device.