PEEP valves urgent need
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We are a university group of engineers working on a new version with the developers of this project: https://www.oxygen.protofy.xyz/
Due short stock and slow production of companies making the PEEP valves the respirator needs we need urgent help to design a PEEP valve we can easily manufacture with 3d printing or else.
Commercial peep valves looks like this
This article is very useful to understand the need and the way a PEEP valve works
Thanks everyone.
Stay safe!
Hello, I will start working on the valve in a few hours. I’m an aerospace engineer with a strong experience experience in mechanical design.
I will work on the 3D model of the valve. If somebody has started working on this device please feel free to write me at filippo.a.menconi@gmail.com, we could share the results.
Regards
Filippo
If anyone does get this design working, please share as we are working on developing the Decathlon Mask ventilator following the Italian design (Isinovva) but are falling short on PEEP valves
With appriciation
Ajay
You don’t need a 3D printer for this task. You need just
a) the hose, were the air should flow out
b) a glass, 20 cm high filled with water (diameter does not matter, but small is better if you want to install a “back flow safety, see below))
c) a rubber band / a clamp
(Follows from Dr. von Reuss description)
Assembly: Place the hose into the glass with water, as deep as you need pressure, eg. p= 10 cmH2O, the opening of the hose needs to be 10 cm deep. p= 20 cmH2O => the opening needs to be 20 cm deep. Fix the hose in the appropriate depth with the rubber band.
In case you want a “back flow safety” you need to install above the glass a ball (a hollow sphere), on top a connection for the hose from the mouth of the patient, at the bottom the hose goes to the water glass.
The ball needs to have a volume which is greater then the filling of the glass.
(I’m a chemist, and this is a very common apparatus in chemistry).
The setup can also be printed and has the advantage, it is from a mechanical point of view quite easy to setup, you don’t need the steal springs nor a different material for the ventile. You can print it with cheap PLA.
If you give me the diameter of the hose, I will send you a stl file.
(I’m a chemist, and this is a very common apparatus in chemistry).
Hello Tom:
We are also following this approach, but the fact of having a 30cm high vessel with water is not something very desirable on a hospital we think. Stability an posible tilting makes us aware of the risks this design.
One possible solution could be not using water, but another fluid with more viscosity so the size of the system could be smaller and be properly confined.
What do you think on this?
Thanks
All, we are a group of Aerospace Engineers who are also working on a design for this valve.
If you are working on something like this, you should definitely take a look at this patent: https://patents.google.com/patent/US8534283B2/en?q=peep&q=valve&oq=peep+valve
Please keep us posted on any update you can share. I will do the same if we are able to solve it.
Regards,
Andrés.
Hello Mark,
We have a design ready and two prototypes already done. We are sending them to a local hospital to validate the design. Once it is ready we will make it public with all the required information for its fabrication.
We may need to calibrate the spring we are using, but we need first the feedback from the medical center.
I will keep you posted.
Kind regards,
Andrés.
Hello Andrés:
We are also testing our prototypes, can you send me an email to pablo.quesada@upm.es to share ideas?
Somos un grupo de ingenieros de la UPM, podemos compartir ideas.
Gracias!!
Hi all,
Thanks for the information and work.
I’m located in Barcelona (Spain). I follow different channels to check for updates. I encourage you to make the highest diffusion possible when ready!
Hope it goes all well.
Best regards,
Marc
Hi!
I’m from the federal univerity of Rio Grande do Sul in Brazil (UFRGS) and we started working on a PEEP valve today. It would help a lot if there was already a validated design. Waiting for your update, Andrés!
Thank you so much!
Hi, I work within a Research centre at a University and would also be interested when the valves have been validated We are working on a number of Covid 19 projects and there is definitely a need for these as supplies are low.
Hi Everyone,
We have been working on all the elements of the design and are now into 3D printing and trial at a hospital in India. We have a good panel of doctors closely working with us to ensure we can take this to large scale production.
I would suggest have a global Zoom call to discuss our design and hear any suggestions. Can we have the call at 5PM (India Standard Time) on this Saturday- 10th April.
Please email me on ankit.agarwal@stl.tech for confirmation. I will share the zoom details.
Hello
My name is Enric from company Precision valve company Redfluid. Together with several hospitals in Barcelona we have developed a high precision PEEP valve with excellent results in lab trials and health patients. We are awaiting last approval from the government. We are looking for preorders so we can get funding to mass produce the Peep valves. We have a huge production capacity so everyone should be able to get a Peep valve.
please if you know anyone interested in Peep valves kindly contact us.
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