They are cheap.
You think it was the virus but find out later it was the machines.
This page contains more recent info + discord channels for 3D printer owners. Amazon has (had?) It wouldn’t help the oxygenation, but I think the O2 problem is more easily solved (weld gas, O2 generators being much more common home medical devices)Leverage COTS… Commodity Off The Shelf… anything that can be re-purposed… are baby bottle liners “sterile enough” to line parts that would otherwise have to be made from sterilisable material or specific non-toxic materials? the part should not expel such vapors when is used as a part for the ventilator.In a situation like the present, we need to use whatever is at hand, a piece of cooper pipe, maybe pvc. The Gov would use their own Performance Spec to drive development of any Testing Specifications to then qualify that new system.What difference would an OPEN performance specification make?Ever used Marlin on your 3d printer? My husband used to work for them. Funny how no matter WHAT type of printer you have, you can still compile the same firmware with the same menus and configuration opens regardless of the hardware you are running. The only problem is that we don’t have the designs. ..,Hi, I am looking for a team to put together without wasting time, I have a design and been evaluated by Medical professionals. Needs understanding. Usually it just takes a screwdriver or screwdriver-like object to unlock it. The O2 in this case is the oxidizer and therefore Oxygen is one of two reactants to be flammable. I have a design I could use a hand inm -hope to hear from Granting Foundation on Monday. Real advantage is that for DIY it’s non-invasive. The weight of chest components, ribs muscke skin etc passively promotes outflow. medical bottles are coated so they dont rust and have to be checked regularly whilst welding bottles are not visually checked for rusting and particles to such a degree.I confirm what Nathan sais; Welding bottles are only visual inspected; I also see that some say that high purity high pressure systems work without oil. This is how people make induction heater coils which require a tremendous amount of amperage, but not voltage.The gist seems to be: the voltage needed is about 1.4V, the efficiency increases with warbler water. Before insurance approved it, an EMT friend actually made the suggestion that we buy the medical grade equipment but fill with welding oxygen. Without trust, modern medicine fails. You cant identify every risk by testing the manufacturing process or the product, and software cannot test everything. No filter needed.I am a Cryogenic Plant operator on a US Carrier. Medical uses go to oil free and sterilized lines, where welders go to oil tolerant (not necessarily present) and likely dirty equipment.Portable oxygen generators are there. I copied the blower from a CPAP machine and drove it with a motor from an HDD and got a lot of quiet airflow, but the HDD motor is maybe a bit underpowered for this application. Really Ruth Goldberg but it works. Engineers can immediately help to produce cheaper ventilators for critical care Inert 1/2 inch plastic tubing into the center and use Tuck tape to seal and reinforce the edges.
I think ventilators predate 2003 by a considerable number of years. Which means Pure A Tanning Beds might be good option for Treatment before you even need a Ventilator. If we don’t have to make something unnecessarily risky, then we shouldn’t. But there are plenty of grades between welding and medical that are acceptable in a pinch. Another challenge is to determine the saturation of VOC in sorbent tubes before changing them, if used as filters.
or if there’s a bad 02 shortage or something…)Alternatively, could the aircraft builders (who have shut down their production lines) continue to build the oxygen distribution systems, but to intall in hospitals – it might be a ward-scale solution instead of a 1-patient solution.I really like this idea. If you have something please add towards the list. Simple hand dials can regulate stroke speed and O2 volume, and using a warmed water vessel for the O2 to bubble through. there is no difference between breathing O2 and welding O2 gas the only difference is the bottle it comes in. Any thoughts in your medical opinion?For the nasal cannula, maybe use a 12 volt portable air pump (normally used to inflate tires) with the nozzle cut from an inter-tube. There are some real problems regarding the various stakeholders (doctors, patients, med-techs) and what specific knowledge each role has that drive device requirements. Can anyone weigh in on this?What about the proton exchange membrane technology they use in H2 production for fuel cells? I don’t know the answer to that, but I am in agreement with others who advocate for open designs of tech in critical need.Bubble CPAP (developed by my friend Jen Wung, MD at Columbia, Babies Hospital) Its likely that in the event of a complete collapse, the death toll will be even greater.Hi, just a thought but could BMP085 or similar sensors be used?Re. The ventilator can also operate in an assisted mode where it senses the pressure change associated with the first stage of a patient’s breath and then kicks in to help.
They’re built to run 24/7.Measuring the pressure of the air might be challenging. An MD should know more.Anyhow we could use industrial oxygen with a reasonably good pedigree – I have no doubt suppliers would gladly divert tanks for emergency use- and just be sure either to catch oil in baffles, or some other precautions.I work in the industrial gas business and can tell you product is the same (liquid o2, almost each plant is medical certified) only the way they are filled into cylinders is different (different skids, more analysis)This is my experience also (with high purity helium) .If there is any standard lubricating oil in any part of the oxygen making process, you probably won’t be able to buy oxygen from that supplier as it’ll be a smoking hole.
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