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Ventillator project Answered

Hi everyone

I am a medical doctor with interest in 3d diy projects.

Due to current corona epidemic i am planning to make a ventilator (if possible). I am looking for a pump which can be used for this purpose.

I found something like ( https://www.instructables.com/id/3D-printed-pump/)

this but im open for suggestions.

Thankyou

Discussions

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dakeinsacramento
dakeinsacramento

8 days ago

Look at pond air bellows pump, replace motor with PLC stepper motor.

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chezjako
chezjako

11 days ago

One Ambu balloon

VEDIA SYSTEM_EDDS-MIkfd8tA03a_r6r3L8fDDw-0e0VSFxf70LgVL13XfooKA-2FUQOPbD0HHYYWOWsYvvJw-ade666.jpg.jpeg
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chezjako
chezjako

11 days ago

Perhaps with a manual insufflator ( balloon ), pressure gauge and arduino for control pressure and frequency. The balloon will be flatten by a planchette and electric motor.

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rilyas
rilyas

Reply 12 days ago

hi
thankyou for your reply. great article.
this is as you said a bit high tech and would involve sensors and stuff and accurate calibrations
i am currently thinking of making the most basic form of ventillator there can be. essentially a pump with stroke volume of around 450/stroke, and a veriable pressere valve with range around 10-20mmhg thats it. also it needs constant +4mmhg of pressure in tubes.
as one says that something is better than nothing. so i am thinking of excluding the fancy modes.
my rationelle is that the patient will be completely sedated with medicines so will only be dependent on machine (no breaths of his own) so that this machine can be used temporarily.
does this makes sense.
thankyou for your help

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OTS_Engineering
OTS_Engineering

13 days ago

I was looking at that referenced link above and came to a GitHub link https://github.com/jcl5m1/ventilator I think this would be something for you to build and inspect to see if there is anything that needs improving!
FYI the credit for this goes to jcl5m1 . Great Idea!

full system.jpg
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Downunder35m
Downunder35m

14 days ago

Vacuum cleaner ?
They suck, I know...
But what happens to suction when it is through the motor?
Take a cheap model with Hepa filter and option to attach the hose as a blower.
Some actually advertise happily that you can even fill your air bed with them.
If in doubt you can always make a custom attachment at the filter cover or outlet.
Especially the cheap ones will come with brushed motors, so it should be quite easy to add an adjustable transformer or preferably dimmer that is suited for inductive loads.
Get the speed low so you have enough airflow for your project and if you need a higher flow rate for a second patient or so just crank it up a bit.
I strongly suggest though to install additional filters and a pressure control system.
For prolonged use it would also make sense to build a custom housing for the stuff with additional cooling as the motor and outgoing air will get quite warm.