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Coronavirus
- Thread starter nobbie48
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It all depends on how much medical grade and tested for every situation matters to you. Physically making a respirator is easy. Confined swept volume at a specified rate of sweeps/minute. You should to add some safety features like overpressure relief so you don't pop the patients. Not sure if they do negative pressure for exhalation or if that happens naturally, either way, not hard to incorporate in the system.Do they ever get disinfected
I can't believe there is not a relatively easy way to make one.
Mad Mike
Well-known member
Do you think a CPAP could work?
In a hospital scenario, who is doing the pumping? No visitors allowed in. No staff available for a 24/7 job like that. If you are making this at home, I might use a couple air cylinders (one small diameter using shop air to provide the push, the other larger cylinder [hopefully 02 cleaned with nitrile o rings so you dont inhale flames] to feed your lungs.) Adjusting the air pressure in the first cylinder adjusts the strength of the push on your lungs. Flow control on the first cylinder adjusts the speed. A moveable switch adjusts the volume (and resets the cylinder to the start). A few check valves and bingo, bango, breathing.
I don't know how much pressure they can put out, nor how much you need for a ventilator. You need the control to do the pulsing as CPAP is constant positive pressure, but that is relatively simple (especially if the asshats with the knowledge give it up for temporary use).
EDIT:
If they really wanted to do something cool, what about taking patients on the brink and prefilling their lungs with Perflubron? Hopefully that is enough to stop filling your lungs with useless liquid and then you just need a steady flow of reoxygenated liquid that could be done with any of the thousands of peristaltic pumps in a hospital. I am pretty sure they have had mice "breathing" liquid before, but I'm not sure it has ever had a human trial.
EDIT 2:
Yup. Could work. Bring on the future. You need 5 to 10L/minute of fluid exchange though. Probably not possible with most peristaltic pumps.
Can Humans Breathe Liquid?
Deep water and the unprotected human body don't play well together—like, at all. But what if there were a way to get around the body's chemical
gizmodo.com
"In 1989, human trials began in Philadelphia. Several near-death infants suffering from severe respiratory distress were administered total liquid ventilation—completely filling the lungs with PFC fluid vs filling them to their functional residual capacity—and showed some remarkable physiological improvements, including lung compliance and gas exchange. And that might just be the trick.
During normal development, the fetus' lungs are filled with amniotic fluid and, once they're born, a chemical known as surfactant helps prevent the lungs from collapsing. Premature babies, however, have not yet developed enough surfactant to prevent their lungs from folding in on themselves, so when they're suddenly exposed to a gas atmosphere they struggle just to breathe.
The Philadelphia trials aimed to see if liquid ventilation could accurately recreate conditions within the womb, act as an artificial surfactant, and reduce the neo-natals' stress. While the efforts weren't enough to save lives, the lung performance improvements remained even after removing the ventilator, and proved that liquid ventilation was a potent therapy for premature babies."
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My niece works for a CPAP manufacturer and I had a long discussion with her dad on the subject. It's a common subject. There are lots of pressure differences as well as humidity and temperature controls. Dry air dries the lungs and too wet floods them. Scuba gear also gets mentioned. Nothing in medicine is simple and there are lots of double edged swords. Fix one problem and create another.
There's a video of a Chinese family keeping a member alive for years on a hand powered one. I'd give it a shot if a two week period got me through the disease. The Chinese guy is on one because he is paralyzed.
Fall asleep and grandpa's dead? I would be looking for a redundant system asap. Thumbs up to the family for putting in the effort though.
I'm trying to figure out the part that gets shoved down the windpipe instead of the other whatchamacallit pipe.
Could you make one out of a modified coffin? That way if it doesn't work you haven't wasted your money.
Interesting to see the response from the corporate world. I have been on a lot of internal / external customer calls. The general attitude is that this will be another week and everything is going to go back to business as usual. As soon as someone brings up that this might be another month or two it gets shut down instantly. Grasping at straws to how they can justify staying open currently, etc. Zero long term planning seems to be happening.
I think once we get close to April things are going to hit the fan.
I think once we get close to April things are going to hit the fan.
Trials
Well-known member
You could make one out of a big cardboard box or a plastic culvert if you had nothing else. Yes it's an iron lung like I suggested about a week or more ago.
Ventilators is what they are screaming for on the TV news, 80% patients need them where there would normally be 30% that's not going to improve by the time you need one. Patients complain they can't catch their breath.
Ventilators is what they are screaming for on the TV news, 80% patients need them where there would normally be 30% that's not going to improve by the time you need one. Patients complain they can't catch their breath.
I haven't handled one personally, but I think it is a breathing tube attached to a tube with a balloon. You inflate the balloon to keep it in there. Should be simple enough to come up with something if that is a supply constrained part.
You missed the part where the lungs are full of fluids and an iron lung won't help. The iron lung is more for a person that is paralyzed.
J_F
Guest
looks like the torque curve on my RD350
but seriously, hope we can flatten the thing that's going vertical
www.worldometers.info
but seriously, hope we can flatten the thing that's going vertical
Coronavirus Update (Live): 133,680,566 Cases and 2,900,909 Deaths from COVID-19 Virus Pandemic - Worldometer
Live statistics and coronavirus news tracking the number of confirmed cases, recovered patients, tests, and death toll due to the COVID-19 coronavirus from Wuhan, China. Coronavirus counter with new cases, deaths, and number of tests per 1 Million population. Historical data and info. Daily...
www.worldometers.info
All im doing is long planning, want a job? lol.
Maybe? I thought they weren't full, just lots of fluid. Is the problem your diaphragm can't get enough pressure/gets tired or is the problem you need to bubble oxygen through the fluid?
Trials
Well-known member
Ya, I posted that a long time ago too.
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