Computational Modeling of a Low‐Cost Fluidic Oscillator for Use in an Educational Respiratory Simulator
Name
Advanced NanoBiomed Research - 2021 - Dillon - Computational Modeling of a Low‐Cost Fluidic Oscillator for Use in an.pdf
Description
Published version
Size
2.14 MB
Format
Unknown
Checksum (MD5)
23203b497c195736102a24cfa27dae40
Author(s)
Dillon, Tom
Ozturk, Caglar
Mendez, Keegan
Rosalia, Luca
Gollob, Samuel Dutra
Kempf, Katharina
Roche, Ellen
Date Issued
December 2021
Journal
Advanced NanoBiomed Research
Publisher
Wiley
Citation
Dillon, Tom, Ozturk, Caglar, Mendez, Keegan, Rosalia, Luca, Gollob, Samuel Dutra et al. 2021. "Computational Modeling of a Low‐Cost Fluidic Oscillator for Use in an Educational Respiratory Simulator." Advanced NanoBiomed Research, 1 (12).
Version
Final published version
Abstract
This paper presents the computational fluidic modeling of a fluidic oscillator for the conversion of continuous positive airway pressure (CPAP) machines into emergency pressure support mechanical ventilators by providing a periodic pressure output to patients. The design addresses potential ventilator shortages resulting from the ongoing COVID-19 pandemic, or future pandemics by converting a positive pressure source into a mechanical ventilator with a part that is (i) inexpensive, (ii) easily manufactured without the need for specialized equipment, (iii) simple to assemble and maintain, (iv) does not require any electronics, and (v) has no moving components that could be prone to failure. A Computational Fluid Dynamics (CFD) model is used to assess flow characteristics of the system, and a prototype is developed and tested with a commercial benchtop respiratory stimulator. The simulations show clinically relevant periodic oscillation with outlet pressures in the range of 8-20 cmH2O and end-user-tunable frequencies in the range of 3-6 seconds (respiratory rate (RR) of 10-20 breaths per minute). The prototype can respond to disrupted oscillations, an analogue for patient-initiated breaths. The fluidic oscillator presented here functions at physiologically-relevant pressures and frequencies, demonstrating potential as a low-cost, readily deployable means for converting CPAP machines into emergency use ventilators. This article is protected by copyright. All rights reserved.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Institute for Medical Engineering & Science
Harvard University--MIT Division of Health Sciences and Technology
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1002/anbr.202000112
