Folks, We are very happy to hear that there are a large number of open-source ventilator projects! Would you please add ours to your list. The 'public' website is here: https://www.ventilatorcrowd.org/

This is supported by a back-end, Slack site for collaboration. Anybody can join this .. just request and I can send out an invitation.

We are also publishing analaysis here: https://github.com/ventilatorcrowd/Ventilator-Crowd

We would particularly like to draw other team's attention to our analysis of the UK governement MHRA 'Specification' (actually, a rather badly written 'User Requirement Document'. Our Systems Engineering work on this may help other teams.

Good work guys and best of luck.

Apparently this design from Kharkiv was used in the '90s to save hundreds of patients including babies. Not sure if this counts as a project but this is so far the simplest/most buildable I've come across. They say it't the "Kharkiv children's hospital" workers who remembered using them. The doctor in the interview is Volodymyr Korsunov. The ventilators they had back then were of a lower quality and caused many complications. The name "bubble cpap" comes from the bubbling of the water which acts as an exit pressure regulator.
https://www.youtube.com/watch?v=7sQmRaOkSRc
Looks similar to the category in the readme called Other Therapies

Thanks again for all of the work on this!

The link to the spreadsheets (the pubhtml style link) does not allow clicking on a cell to view the contents as a typical spreadsheet view does. This means that the comment cells (and long project names) are unreadable past the first few words.

Would be great to just have a standard, read-only spreadsheet link. Allowing the public to add suggestions via Google Sheets Comments could also be a good way to get help from the public in keeping things updated.

Cheers!

In Slovene, but Google does a decent job:

https://www.gzs.si/zbornica_elektronske_in_elektroindustrije/respirator

Latest update from March 28 2020 introduces a 1 point score drop, from 1.57 to 0.57.

Questions:

• how to know why a score changes? are results of an evaluation run-through published somewhere?
• is it possible to introduce a score delta column in the evaluation?
• is there an open community process to discuss the evaluation criteria (which already are quite comprehensive but maybe other experts could make valuable suggestions)?

Please add our Project:
https://github.com/auenkind/YACoVV

We Foucs on the pressure regulating part with an unconventional but very effective solution

https://simulation.health.ufl.edu/technology-development/open-source-ventilator-project/

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
Intubated patient
A bare bones, safe design is better than nothing and what “nothing” means
The supplies and materials will be locally available at hardware stores
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
Dissemination via Internet and GitHub (https://github.com/CSSALTlab/Open_Source_Ventilator.git)

Hi,

I've been working on the S-Vent (www.s-vent.life) which is a simple ventilator designed to be produced in areas with limited manufacturing capabilities. It requires no machined, injection moluded or 3D printed parts and could be manufactured in any shed, workshop or field hospital. It uses a medical manual ventilation bag (MVB) which can be hooked up to an oxygen supply if needed and the device provides the input to compress the bag and provide pressurised air/oxygen to the patient.

It can provide the following features:

Variable tidal volume,
Variable cycle time (breaths per minute),
1:2 Inspiration to Expiration ratio (Modifiable),
Presure relief valve (60cm H2O),
Pressure gauge for Inspiration/Expiration pressue monitoring.
Option for PEEP valve and expiration filter
Runs of a 12v supply so can be run off a car battery.

https://www.instructables.com/id/Simple-Ventilator/

I've been running extended run tests and am trying to source a lung simulator to do validation testing on.

Let me know if you need any more information.

Best wishes

Tom

Dr Tom Burton
Senior Systems Engineer
McLaren Applied

Would you consider adding a column to your spreadsheet titled "BOM Available".

To indicate whether a project has completed that very important milestone or having a parts list?

In my humblest of opinions, it would be an invaluable resource for people with electronics experience to find the most advanced projects. Thank you.

P.s. your project is absolutely phenomenal! Amazing work.

https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2044.2009.06207.x

https://onlinelibrary.wiley.com/doi/pdf/10.1197/j.aem.2006.05.009

https://www.npr.org/sections/health-shots/2014/01/03/259436844/saving-babies-lives-starts-with-aquarium-pumps-and-ingenuity

https://www.medicaldesignandoutsourcing.com/low-cost-ventilator-wins-sloan-health-care-prize/

https://digitalcommons.usu.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1016&context=spacegrant&fbclid=IwAR1EtJVcxXm82PjGWFCA0t7H_MxNVjuseAePRfxNORr9h4ZQLQ9sNdQjXhc

http://hadleighhealthtechnologies.com/pumani-bcpap/

https://3dprint.com/45352/3d-printed-ventilator-manifold/

https://docs.google.com/document/d/1uF6VbxwtKA2iuQtYNQJ-yW9clQXDOgtaTS5TvQ8Sk8k/edit?fbclid=IwAR2T3zy5GTK5u6BFtXpogwAUY-BNTEdF00nK-jUKaXJz988wi2QHxVS8CoY

https://www.allegrosafety.com/product/lp-full-mask-supplied-air-respirator/

Possibly most initiatives will use some sort of digital microcontroller.

Maybe it would be useful to have a column to indicate whether it's Arduino or something else?

I see the Hackaday got rated poorly for openness and build-ability, sorry that wasn't the intension just forgot to post the link in the youtube page.

Here are design and build instructions (including list of parts) so that others can learn from this design.
https://github.com/hackadayrex/ventilator

Great that there are so many options :)

https://github.com/snipe75/low-cost-medical-ventilator

Working prototype using Ambu bag.
Tested the prototype at 30 BPM with 37cm H2O (size of the jerrican).
Website : https://20100.be/ad-hoc-ventilator/

A work in progress

The goal of our project is to provide a single dashboard interface to remotely monitor multiple ventilators at once. Check out our Live Demo and Github Repo. Please submit an issue on our Github repo to discuss software integration with you ventilator design. Priority is given to ventilator design teams who are closest to manufacturing.

As per subject line, the OpenVentilator project (via PopSolutions) is listed twice and the listings have inconsistent scores:

1. "OpenVentilator (PopSolutions)" - URL: https://www.popsolutions.co/en_US/openventilator - score: 2.79
2. "OpenVentilator-Popsolutions" - URL: https://github.com/popsolutions/openventilator - score: 2.43

This ventilator project is fully open:

• GPLv3 licence (copyleft)
• several updates on the plans, code, documents available on github: https://github.com/mur-project/MUR
• ventilator benchmark (on ASL5000) tests published
• community driven (more than 20 people listed on https://www.mur-project.org/index-en.html#who)

The current prototype has also been tested for more than 48 hours continuously (video on twich).

(I'm part of the project)

https://arxiv.org/pdf/2003.10405.pdf

https://www.ventcore.health/

I've mentioned this effort to them, and they're happy with me making an introduction via email, too, if that would be useful.

This one uses a different approach, seems promising, but lacks some documentation:
https://letsbeatcovid19.blogspot.com/2020/03/march-29th.html

here is another link you may like to add
https://github.com/jps2000/Cuirass-Ventilator

https://www.youtube.com/results?search_query=ambovent

https://www.youtube.com/watch?v=4f6rNCI8iv4

Hello everyone,

I am working at innosabi. We've launched together with MunichRe and Fraunhofer the challenge "Give a Breath". It is a global call for ideas and collaboration to identify the best 3D printable designs to enable the immediate, decentralized production of emergency equipment. The challenge includes funding for prizes and realization in sum of 1 million euros.

Could you please update the document about the possibility to submit designs in this challenge and to get funding for the realization? We would love to win your support in this. If you have ideas for partnerships we would love to connect you to our partners at MunichRe.

https://give-a-breath-challenge.innosabi.com/

All the best from Munich,
Eddy

Link to the main of OpenLung BVM Ventilator GitHub isn't the one in Spanish.

https://gitlab.com/open-source-ventilator/OpenLung
(Listed as the E-vent from MIT in the spreadsheet)

They're based in Ireland and have a 2k member slack group that's worth including. It seems that they've closed invitations, but can probably sign up through their site: https://opensourceventilator.ie

Thank you!

https://gitlab.com/PerAsperaAdAstra/lcaev

Operational prototype, freely available part files, software, and instructions

A lot of ventilator depend on some medical subparts (like ambubag).

Currently most medical components lack after a few weeks.
Buildability should take this into account.
Designs with no medically linked parts are in fact more "buildable" in mass.

https://engineering.berkeley.edu/news/2020/04/turning-sleep-apnea-machines-into-ventilators/

https://www.ventilatorsos.com/

The list is missing the OpenVentilator (yet another one) project.

This one is released under an open source license on the following github repo:
https://github.com/OpenVentilator/OpenVentilator

Originally Medtronics release was not very open; I have heard it now has much more material. I would love someone to evaluate it as an opinion and leave it in this issue.

Pretty awesome, pressure-operated valves with some tubing.
https://www.youtube.com/watch?v=y_aHpr81ASk

Please indicate if this is not the appropriate channel to share.

Looks like our project (AmboVent) was linked to the wrong site (https://20100.be/ad-hoc-ventilator/) here.
Our link, and, you can add our open repo of course

Please add: https://devpost.com/software/diy-beatmungsgerat
We are currently exploring options and submited this design for the #WeVsVirus Hackathon of the German Goverment.

First off - thanks a million for this work. There are piles of projects out there, making it very difficult to find the projects that are heading in a solid direction, and have made good headway. I'm working with a team in Cambodia to setup production of ventilators, and despite the plethora of projects, it is very difficult to sift through the ones that are worth following and pursuing.

That said - given that this list has become so popular, it is very important that it stays at least reasonably up to date. If people miss-directed away from higher quality projects, and towards lower quality projects, it actively harms the global efforts.

Since things are changing SO quickly, having projects that haven't been re-evaluated in 2 weeks makes those entries in the chart stale. In its current state, I cannot rely on this list to be a useful gage of where projects are at - which incredibly important for implementation teams like us on the ground.

I know this is a ton of work to do, and I SO much appreciate the time and energy you are putting into this, as well as the testing rig. Keep up the good work - it's a critical piece to the global effort!

P.S. I've been tracking the MIT E-Vent project closely. They have yet to release code or say when they intend to, which is frustrating, but their team, requirements, process, and documentation show a very solid understanding of the problem and what makes a good solution. I expect they will have something very good fully published soon.

https://www.xn--kla-1oa.org/static

AmboVent officially released their full mechanical design and source code on GitHub (https://github.com/AmboVent/AmboVent). Their "Openness" score should be revisited no?

I'm working with a team in the Santa Clara U datavscovid hackathon, and modeling of ventilator demand is very important to our effort. Where could we find the results of the work of the demand-modeling subteam mentioned in this medium article: https://medium.com/@brucefenton/ventilator-project-update-march-21th-2020-bd2ef9d587e0 ?

Add CoroVent: https://www.corovent.com/

It mentions open source but I see no sign of a repo.

Hi,

The link goes to a different (tho interesting) document...

Looking forward to this guide!
Christine

A Super-simple Guide to Mechanical Ventilation For Open Source Engineers Designing Ventilators for the COVID-19 Pandemic -- This was written by me (Robert L. Read). It's my best attempt at an introduction.

Not sure if this was added to the list or not:
https://docs.google.com/document/d/1FNPwrQjB1qW1330s5-S_-VB0vDHajMWKieJRjINCNeE/edit

I do not know if this fits in the list, but you may be interested in https://github.com/AmboVent/AmboVent .

Engineers and designers from Poland-based Urbicum have banded together to launch the VentilAid project, an effort to design an open-source ventilator which can be reproduced using a 3D printer and an assembly of basic, easily accessible parts. The open-source ventilator is being designed to help medical professionals in the fight against the coronavirus pandemic in cases where more traditional hospital resources are limited or exhausted.
Could you please add it to the list?

https://care-vent.web.unc.edu/home/testing/

Hello,

I am a member of the Open Breath team, I would like our project to be reevaluated. last time it was assessed (March 21st) we were at a very early stage. It is now a very open project, with many members actively contributing to the forum, wiki, and repo.

Thanks

link to our wiki https://www.ohwr.org/project/openbreath/wikis/home

When reviewing your spreadsheet Analysis of Open Source COVID-19 Pandemic Ventilator Projects I noticed that there was a project called project Army-Type Pneumatic Ventilator.

I am helping coordinate this project based on these designs and you can see our initiative here >> https://www.worldwideventilator.com/

Can I just go into the google document and add our website and additional information on this effort?

Hi Team, Thank you for your comments.

I've added an MIT license (seemed to be the most open I could imagine - but let me know if you'd prefer something else).

Next up I'll work on updating the build instructions.

Thank you for your work promoting these projects! Great work.

If it makes any sense, test labs and product teams could consider to exchange data digitally.

That is, many initiatives attract capable software engineers so it's less a capacity problem, just need to find common base/goal to collaborate.

Implementation approaches could be:

• push - initiatives submit standardized data reports to an API endpoint at your site
• pull - initiatives publish standardized data reports on their sites which you can collect

What seems initially to be a sort of overdoing just to simplify reviewing websites and GitLab repositories, will save time on mid term and on long term if community picks up this topic, it would be possible to exhange large data sets for example also ventilator measurement data - from acceptance testing to medical research. Also, this would add to new ways of medical engineering data corpora.

If this makes sense, a good start would be to publish requirements which data format would be make sense to exchange and extend this with other parties.

Controller code bases introduce their own complexities; therefore it would be great to have an additional column and a testing workstream to grade code quality.

There are varieties of tools, we could start with simply linting to get an idea about a statc code quality.

I am open to discuss further details and implementation in this issue thread.

For example:

0. Code does not even compile*, no need to check static code quality.
1. Lots of warnings > 10
2. Some warnings, only 1 or 2 critical, total count < 10
3. Several non-critical warnings < 5
4. 1 or 2 minor warnings.
5. Zero warnings, assume 100% measurable static code quality.

* Provided documentation must contain instructions how to setup compilation environment, install required dependencies and run compilation and what the result should be. Ideally, these steps should be shared in form of a test script like Dockerfile or similar as part of the codebase.

Further metric could be code coverage whilee 100% code coverage is very expensive and rarely seen.

Further inspirations for graded code quality (a commercial tool but they have a great quality framework and also many industrial customers; I have reached out to their CEO in this context):
https://www.tiobe.com/tqi/awards/