Low-cost easy to assembly system. Details and plans to come soon!

• Pressure regulated system with adjustable pressure (PIP and PEEP), BPM, and tidal volume.
• Capable of 100-600 cc tidal volumes
• Real time instrumentation and visual output
• Low cost easy to assemble electronics

Performance Characteristics:

A piston based system was chosen due to the ability to easily calculate tidal volumes, pressures, forces, and the widespread use of pistons in other industries.

Motion control with pressure sensing allows for the following controls:

• Capable of providing a Respiratory Rate of 12-40 breaths per minute
• Capable of Providing 5-24 cm H20 of PEEP (Positive End Expiratory Pressure)
• Capable of limiting the Peak Inspiratory Pressure to 18-40 cm H20
• Capable of tidal volumes between 100-600 cc
• Variable inspiration to expiration timing ratio
• Pressure Support—a breath triggers either a set pressure or volume of air; and maintains a continuous PEEP (Positive End Expiratory Pressure)
• Alarm in case of malfunction

Control System Description:

Powertrain and Electrical components:

• 5:1 nema 17 motor
• Arduino nano
• DRV8825 Stepper Motor Driver
• SparkFun Pressure Sensor Breakout - MS5803-14BA
• LCD display
• Potentiometers (3)
• Status LEDs
• Switches