Electronics > Projects, Designs, and Technical Stuff
Medical Ventilator Design
Kilo Tango:
Thanks for the info regarding brushless motors, I tend to automatically think of drone motors, not up to date with recent developments.
However after some Googling, I think the problem is not an engineering one. I read somewhere that Phillips had developed a new low cost ventilator, the Trilogy Evo, it was launched last year.
A report in Propublica.org says that the US paid for its development, and gave them a 10,000 unit contract. It received FDA approval in July 2019. However Phillips are not due to ship any units under this contract until 2022, and are not yet making that model. However they are currently selling a more expensive version, and have been doing so since approval date.
Ken
Gandalf_Sr:
Great inputs from the Brits :D
I used to be into model airplane / helicopter flying and have many small brushless motors; I also have many ESCs (electronic speed controllers) which control the motor speed based off the width of the pulsed signal coming onto the control input. A 3D-printed case with fan would make a good ventilator fan plus they have no brushes to wear out. The bearings would ideally need to be ceramic to last but an off the shelf motor would probably be fine for a cheap ventilator. These brushless motors and ESCs are dirt cheap and widely available.
nardev:
--- Quote from: profdc9 on March 31, 2020, 05:46:04 pm ---You'll get no argument from me that the American health care system is rapacious and inefficient.
Even in a well-functioning, properly incentivized health care system, emergency preparedness can be a problem. There was an attempt to create a reserve of ventilators, however, the company with the contract to produce the ventilators was bought by a major medical conglomerate which had no interest in providing a low cost, emergency device. If you demonstrate that the function of a device can be performed at a lower cost, then that puts pressure on the prices of the entire market for ventilators. As the market has significantly consolidated there is little competition left.
Anyways, we now are reaping the consequences, and the true tragedy is that it may be only tragedy that can galvanize any change to this situation.
--- End quote ---
Quite some time have passed, not much changed but we can see what's happening. People with up to a 1.1 milion hospital bill are coming home.
Ok, i don't know enough, it was pretty subjective from my side. But there is a huge flow in your conclusion IMHO.
The health care system is not divided in "well-functioning, properly incentivized" and those that are not.
There is countries that have more social approach to a public health or as in USA, "it's just a business" and than we package it, sell and resell it, add plenty of middleman between the patient and the doctor.
It's pretty clear that Germany, Spain and UK had very different consequences in all of this. Germany have pretty decent, at least rudimentary elements of public health and in USA, Spain, UK you don't have that.
But, anyway, right now, in my country, the situation is getting back to "normal".
Few months ago, we were very organized and now, tests are made primarily through corrupt doctors, some non covid-19 urgent patients are ignored because they don't have right tests, which are impossible to make unless you have covid-19 test, just today, one guy dies in Sarajevo, hew was waiting for hearth surgery and he was denied several times to make the COVID-19 test, although there was no legal way to deny him but they did, without explanation, which actually means "we are waiting your dumb ass to bring us some money and gifts". Sadly, it was fatal for him.
Since, corruption here is pretty normal, that was the reason i said "everything is back to normal".
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