Electronics > Projects, Designs, and Technical Stuff
Ventilator made from car parts
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Psi:

--- Quote from: bd139 on April 07, 2020, 12:46:08 pm ---@Psi...

Not really.  That line of thought only works until:

1. You inflate someone like a cane toad, followed by a loud pop and bits of lung everywhere by accident because the equipment wasn't qualified and tested properly.
2. You turn a viable outcome into a poor outcome or life long disability because someone gets a lung full of machine oil.
3. It fails after 3 hours and kills the patient silently.
4. You get an American lawyer anywhere in the process.

Rules and standards are there for a reason. There's no space for iteration in these things.

I've worked on "safety critical systems" albeit ones that are supposed to kill only the people you point them at (I regret this if I'm honest) and the standards there are as high as the medical side of things. There are whole teams of people who's jobs are to come up with what ifs.

--- End quote ---

They're not stupid, they not going to put anyone on a non-approved ventilator unless it's a last resort to keep them alive.
In those situations it really doesn't matter if it fails and kills the patient because it was the only thing keeping them alive to start with.
bd139:
They're not going to do it without consent and there's no mechanism for consent then.
Psi:
Needing consent goes out the window in a disaster situation.

It's run more like a military hospital

They do the best they can with what they have.
They get so numb from all the stress and death that the idea of being brought before a medical board and fired actually starts to sounds nice because it's quiet and no one is dying.
2N3055:

--- Quote from: Psi on April 07, 2020, 12:41:39 pm ---
--- Quote from: 2N3055 on April 07, 2020, 12:28:09 pm ---It's not legal problem. Those things are medical ventilators in same manner that bicycle tire pump is a medical ventilator.
..
And then, probably, you will understand why a real MD will not connect anybody to such contraption.... It is not a real ventilator, it's a Rube Goldberg contraption made by people who don't understand real problem and is equivalent to elementary school science project.

--- End quote ---

That doesn't matter.

I will restate
There's only so many times you can turn up to work and see people die because you don't have the gear to save them before you stop caring about company policy or rules in general.
If it moves air in and out the medical staff will connect it to a person because 'no air moving in and out' is not a valid option!
eg You can worry about weather or not the lubrication in the pump was medical grade later,


--- End quote ---

Watch the video. And you will see that connecting people to a pump that mechanically moves air in and out will KILL them... Especially if they have damaged lungs...
Hand pumps work only of short periods of time and are administered by a trained operators who match squeezing with patients breathing. Or those who are being revived and have no natural motion of air in their lungs and there is nothing to lose. As soon as a person is revived, they stop bagging them and give them oxygen mask..
Simon:
It looked like they are using precompressed air so no pump. there was no mention of the patient sensors that get the machine working with the patient not against them destroying their lungs. I did hear talk of working out how one ventilator could be used on two people, I don't doubt that he politician that said that too near a medic got hit and not heard nothing since.

Again at best if the parts can be used in a current design do that.
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