Open Source Ventilator Project
Open Source, Open Architecture Ventilator Engineering Design Specifications
This open source project has been created to address predicted ventilator shortage worldwide due to the COVID-19 pandemic and host open source contributions – Distribute freely
Updated April 1, 2020
- Our global OS-Vent support network is growing – see world map by clicking on Design Localization link
- We released today a build document on how to build an exhalation valve with 233,000 cycles MTBF (Mean Time Between Failure) based on our ongoing endurance testing. The desired MTBF is 1,000,000 cycles (a little above 3 weeks of non-stop ventilatory support at 30 bpm). If you can improve the exhalation valve design to reach an MTBF of 1,000,000 cycles, please share the design
- We released the design so others can build a working ventilator and help us collect test data towards an EUS (Emergency Use Authorization) that we can use for our submission to FDA
- We started testing an OS-Vent ventilator with pure oxygen as the supply gas today. Previous tests were with medical grade air up to today
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- Download Engineering Specifications-V1.6
- Visit GitHub to contribute and view the very latest version
Overall Design Philosophy
- Open source for use worldwide and contributions from others worldwide
- Adult ventilator (older adults at higher risk)
- Positive pressure volume control ventilation for intubated patients who are not spontaneously breathing
- A bare bones, safe design is better than nothing and what “nothing” means
- The design(s) will be validated; validation will be documented and transparent; as an academic research lab, CSSALT can do some of the verification and validation
- The design(s) will be modular allowing different modules to be mixed and matched depending on local availability
- Unboxed design – all parts directly accessible
- Design will be inexpensive to build (parts for base model less than $300 US) and assembled quickly (less than TBD hours) with readily accessible parts
- Dissemination via Internet and GitHub (https://github.com/CSSALTlab/Open_Source_Ventilator.git)
- FDA will waive clearance for the bare bones design if there is a massive shortage
- Traditional medical components and supplies used in ventilators will be in short supply
- Transportation will be impaired/disrupted. Locally available non-medical supplies and equipment readily available at local hardware stores such as sprinkler valves and PVC tubing will be used
Upload your prototype videos to YouTube and send a link to OS-Vent@ufl.edu
Once we have reviewed your video, we will share your link here and credit your team.
Live stream of ventilator endurance testing
Video created by David Lizdas, BSME, March 27, 2020 at 5:30 p.m. EST and uploaded 8:24 p.m. EST
*Special thanks to UF MAE and [VentilatorDevelopers]
Proof of Concept Ventilator Prototype
Video created by David Lizdas, BSME, March 21, 2020 at 7:30 pm EST and uploaded 10:05 pm EST
Adruino-controlled Proof of Concept Prototype
Video created by Gordon Gibby, MD, March 22, 2020 at 8:54 pm EST and uploaded March 23, 2020 at 9:16 am EST
Ventilator Electronics & User Interface Prototype
Video created by Ashhar Farhan March 26, 2020, uploaded March 27, 2020
Open Source Ventilator Mauritius Localization By Rey & Lenferna Team
The Open Source Ventilator information provided here (exclusive of any open source content included in it, the “Ventilator Information”) by the University of Florida Center for Safety, Simulation, and Advanced Learning Technologies (CSSALT) is provided as research information only and has not been tested for commercial use. The Ventilator Information is provided by CSSALT with permission for the recipient to freely use, copy and modify without restriction, subject to an obligation on the recipient to recognize CSSALT as the source. The design is bare bones and the necessary supplies and materials should be locally available at hardware stores or through online retailers. This design is for an adult ventilator because older adults are at a higher risk for serious medical risk of the Coronavirus. The Ventilator Information is experimental in nature and the safety or efficacy for use in humans has not been proven.
The design, and ventilators built in accordance with the design, have not been approved by the FDA. The March 2020 FDA Enforcement Policy for Ventilators and Accessories and Other Respiratory Devices During the Coronavirus Disease 2019 (COVID-19), (“Emergency Guidance”), however, encourages manufacturers who have not previously been engaged in medical device manufacturing, but have capability to increase supply of ventilator devices, to work collaboratively with the FDA through its Emergency Use Authorization Process (EUA). CSSALT is currently in collaboration with the FDA to establish a EUA for this design and for ventilators built from the design.
Prior to attempting to deploy ventilators from the CCALT design, collaboration with the FDA to obtain a EUA is crucial. The FDA established the following email contact for those wishing to build ventilators under an EUA: CDRH-COVID19-Ventilators@fda.hhs.gov. Accordingly, if you desire to build ventilators replicating the Open Source Ventilator Project design, CCSALT strongly encourages you to contact the FDA at their designated email address to collaborate with the FDA early in your deliberation process.
DISCLAIMER: THE VENTILATOR INFORMATION IS PROVIDED “AS-IS, WHERE-IS,” WITHOUT REPRESENTATIONS, CONDITIONS, OR WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR THAT THE USE OF THE VENTILATOR INFORMATION WILL NOT INFRINGE ANY PATENT, COPYRIGHT, TRADEMARK, OR OTHER PROPRIETARY RIGHTS. THE RECIPIENT IS SOLELY RESPONSIBLE FOR DETERMINING THE APPROPRIATENESS OF USING, REPLICATING, OR REDISTRIBUTING THE CSSALT OPEN SOURCE VENTILATOR PROJECT INFORMATION AND DESIGN. IN THIS REGARD, THE RECIPIENT ASSUMES ALL LIABILITY FOR DAMAGES, OF WHATEVER NATURE AND DESCRIPTION, WHETHER IN CONTRACT OR IN TORT, WHICH MAY ARISE FROM THE USE OF THE VENTILATOR INFORMATION AND DESIGN. NEITHER CSSALT NOR THE UNIVERSITY OF FLORIDA, INCLUDING ITS EMPLOYEES AND AGENTS, WILL BE LIABLE TO THE RECIPIENT OR TO ANY THIRD PARTY FOR ANY LOSS, CLAIM, OR DEMAND MADE BY THE RECIPIENT, OR ANY LOSS, CLAIM, DEMAND, OR JUDGMENT AGAINST THE RECIPIENT BY ANY OTHER PARTY, DUE TO OR ARISING FROM THE USE OF THE VENTILATOR INFORMATION AND DESIGN BY THE RECIPIENT.
This project is a free Hardware Project.
- Open Hardware License and Liability
- Documentation published describing hardware is licensed under the CERN-OHL-S v2. You may redistribute and modify this documentation under the terms of the CERN-OHL-S v2. (https://ohwr.org/project/cernohl/wikis/uploads/002d0b7d5066e6b3829168730237bddb/cern_ohl_s_v2.txt) except otherwise stated
- Free Software
- Programs described/provided/linked in/to this project are free software except otherwise stated. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details: http://www.gnu.org/licenses/.
- Pictures are published under Creative Commons Share Alike except otherwise stated.
- Do’s and Don’ts
- Everything published about building the CSSALT Open Source Ventilator here is experimental at this stage. This information is intended for researchers at research institutions. It is not targeted at customers. At this time the aim of the information is to find other opinions of how to plan the CSSALT Open Source Ventilator, not to give advice on how to build one. Building an open source ventilator is potentially dangerous. Under no circumstances should anyone actually try to build an open source ventilator based on the information provided on this page without prior consultation of the contact points given in these documents. Under no circumstances should any information on this page be used or tried on human beings without prior written consent of the contact points given in these documents. We are not a law firm and we don’t provide legal services.