Columbia openRPM flow meter design for respiratory profile monitoring systems

To request a license to download and use the flow meter manufacturing design files, please click on "Express Licensing", create an account/log in if you do not have an account/are not logged in, then return to this page, and click Express Licensing again

Columbia openRPM flow meter

We are developing the open Respiratory Profile Monitoring (openRPM) system to provide real-time proximal monitoring of ventilated COVID-19 patients. Here we provide the standalone openRPM flow meter design that can be used for measurement of flow during inhalation and exhalation, capable of sensing air pressure (±100 cm H2O) and flow administered to a ventilated patient.

The openRPM flow meter can be 3D printed or injection molded as a single part using autoclavable plastic resins. The dimensions are compatible with standard ventilator tubing. The flow meter is a mainstream device that would be placed between the ventilator tubing and endotracheal tube. The flow meter allows for measurement of differential and gage pressures from its ports. This facilitates real-time determination of ventilator parameters, including but not limited to: respiratory rate, inhaled and exhaled air volumes, respiratory phase time durations/ratios, inspiratory and expiratory tidal volumes, positive end-expiratory pressure (PEEP), peak inspiratory pressure (PIP), and mean pressure.