brentjackson / openrespirator Goto Github PK

Hello, I would like to contribute but I am not sure if I can make these with PLA or if I would need to use ABS or other types of filament. I currently can only print PLA.
Will that suffice for this application? Thank you.

This received via email...

From: Steve Iscoe [email protected]
Date: Tue, Mar 17, 2020 at 3:01 PM
Subject: multi-patient ventilator
To: [email protected]

My clinical colleagues tell me that the CDC video is limited or worse.
See this attached paper for how to do multi-patient ventilation well.
Steve Iscoe PhD
Professor of Physiology (retired)
Queen's UniversityKingston, ON
Canada
Sommer Fisher Improv emerg vent CCM 94.pdf

Can someone post the final dimensions of the ventilator parts? I want to start printing some prototypes, but sometimes the scale gets messed up when I import the parts into the 3D printing software. Also, it would help to know what the critical dimensions for the final parts are because every printer will print slightly different dimensions for any given file.

Also, what do we do with parts once they are printed? Is there a drop-off or point of contact for someone that will get these to the proper individuals who can use these or provide feedback on them?

Could someone take a look at this?

---------- Forwarded message ---------
From: Weidner, Wolf Marvin [email protected]
Date: Wed, Mar 18, 2020 at 8:12 AM
Subject: Existing design for open diy respirator
To: [email protected] [email protected]

Do not know if you are aware:
(https://www.semanticscholar.org/paper/Design-and-prototyping-of-a-low-cost-portable-Husseini-Lee/3101f69f3908841a8d98a55e792734cd52178e31)

Health Team Germany

Wolf Marvin Weidner 
Working student, Global Health & Well-Being
SAP SE Dietmar-Hopp-Allee 16, 69190 Walldorf, Germany
Discover more:Global Health | HealthGermany@SAP Jam
Healthy Culture in 30minutes!
Access the training on SML
Brandon Hall Group Gold Award 2019 | Corporate Health Award 2019

I have access to a couple FormLabs Form 2 SLA (resin-style) printers. I have a decent stock of standard materials as well as some Engineering materials (more info here: https://formlabs.com/materials/ ) such as Tough, Elastic, Durable, and Rigid.

If anyone can think of any parts that would be better if printed with any of these materials, please let me know. I also have 2 Stratasys F170 FDM-style printers that can print with ABS or ASA.

GitHub facilities seem a bit clunky and inefficient for rapid coordination.

Should we set up Slack channel? Discord server? Something else?

What would be best?

Criteria:

• Fast to set up
• Easy for everyone to use
• Scalable to hundreds
• Free
• Linkable to GitHub and other resources
• Ability to branch... create channels or rooms per topic

Meanwhile we are working on a prototype, our printers can work on smaller stuffs. Prusa sent around this, what can be useful for people cannot be in home office. (gas station workers, grocery shop cashiers, etc)

https://www.prusaprinters.org/prints/25857-protective-face-shield-rc1?utm_source=Prusa3D.com&utm_campaign=86c0dbe164-EMAIL_CAMPAIGN_2020_03_19_03_21&utm_medium=email&utm_term=0_4199f6d18b-86c0dbe164-123398961

I am aware that only FFP3 masks can really provide protection against micron sized saliva particles, but probably this can improve the protection level at least. Let me know your ideas.

Would much appreciate if if someone took action on this to register and see if we can assist...
[Formatting is a bit munged by GitHub]

---------- Forwarded message ---------
From: Alex Losneanu [email protected]
Date: Wed, Mar 18, 2020 at 8:09 AM
Subject: Frontier Tech 4 COVID Action: Ventilation Systems
To: [email protected]

Hello Open Respirator Team,
I’m working with UK GOV to find designs for ventilators that are designed for resource constrained settings to be adapted for manufacturing en mass. We have the health engineering team at UCL standing by to help take designs and make them manufacturing ready. We’ve published an open call for tech teams to use to make themselves known to us, which can give you the full rundown of what we’re looking for, but to keep things simple I’ve pasted our core technical requirements below.
We came across your work on the Coronavirus TechHandbook page and thought you might be interested in this project. 
Please help us spread the word by:
Sharing with your networks: http://bit.ly/frontiertech4COVIDactionClicking here for a pre-loaded tweet to tweet about the call
Pace is imperative. The need is urgent. We’re working with tight deadlines and need your help to get the message out and save millions of lives. 
Call for applications: 16th of March 2020  Applications close: 24th of March 2020 Final Selection: 25th of March 2020 
Any questions or comments, contact the team at [email protected] 
Thank you,Alex

CORE TECHNICAL PARAMETERS
The RMVS must:
Be reliable.  It must work continuously without failure (100% duty cycle) for blocks of 14days - 24 hours a day.  If necessary, the machine may be replaced after each block of 14 days x 24 hours a day use.
Provide at least two settings for volume of air/air O2 mix delivered per cycle/breath.  These settings to be 450ml +/- 10ml per breath and 350ml +/- 10ml per breath. 
Provide this air/air O2 mix at a peak pressure of 350 mm H2O.
Have the capability for patient supply pipework to remain pressurised at all times to 150mm H20.
Have an adjustable rate of between 12 and 20 cycles/breaths per minute.
Deliver at least 400ml of air/air 02 mix in no more than 1.5 seconds.   The ability to change the rate at which air is pushed into the patient is desirable but not essential.
Be built from O2 safe components to avoid the risk of fire and demonstrate avoidance of hot spots.
Be capable of breathing for an unconscious patient who is unable to breathe for his or herself.  Ability to sense when a patient is breathing, and support that breathing is desirable but not essential.
Be able to supply pure air and air O2 mix at a range of concentrations including at least 50% and 100% Oxygen.  Oxygen shortages are not expected, but the ability to attach a Commercial Off The Shelf (COTS) portable O2 concentrator machine may be a useful feature.  
Support connections for hospital Oxygen supplies – whether driven by piped or cylinder infrastructure
Be compatible with standard COTS catheter mount fittings (15mm Male 22mm Female)
Fail SAFE, ideally generating a clear alarm on failure.  Failure modes to be alarmed include (but are not limited to) pressure loss and O2 loss.

Alex Losneanu
Innovation Manager, Brinkhellobrink.co
+44 744 981 3249
Our latest thinking on Behavioural Innovation on the blog
We are hiring! For more details and to apply, head to our careers page

https://coronavirustechhandbook.com/
This is a great list. It also have sections for doctors, nurses, etc. This would a good starting point, either to contribute to their list, or build something based on their collections.

https://github.com/jcl5m1/ventilator

Please have a look at that, if you can rebuild that setup it would be a good starting point.

Need to speak with medical professionals to determine which of the materials used for intubation is likely to be in short supply. (It makes no use to develp a complex laryngoscope if what is truly needed is a supply of bag ventilators, sterile breathing tubes, etc.

My startup Spooky Manufacturing is able to provide assistance in the design and creation of any circuits. We are halting all current research and manufacturing to put our full efforts towards the development of life saving medical devices.

We're looking into a possible ventilator system utilizing compressed air, but are willing to assist in other development projects as well.