Engineering staff, students work to deliver automated bag valve mask to address COVID-19 crisis
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- Опубликовано: 26 мар 2020
- APRIL 3, 2020 UPDATE: Rice University has updated the ventilator project. Open source plans are now available at oedk.rice.edu/apollobvm/.
A team at Rice University has developed an automated bag valve mask ventilation unit that can be built for less than $300 in parts and help patients in treatment for COVID-19. The university expects to make plans to build the unit freely available online.
Up-to-date details about the project, dubbed the ApolloBVM, and its progress are available here:
oedk.rice.edu/apollobvm/
#coronavirus #ventilator #engineering
Innovation in its Rawest Form,... Freaking Awesome to watch.
Proud of all of you working hard on a solution to the problem.🙌✌️
Simplicity is key. Easily maintained. Like to see more on the controls and feedback
Thank you. I've been saying we need to be working on this in ny as a backup plan.
Thanks guys. Keep it up. We need you.
Very nice. An extremely well thought out design.
Open source solutions for daily problems are interesting especially when someone explain the problem and a direction how it should be done.
Good stuff! Can’t wait for the complete parts list. Are there some parts that we can start purchase in Canada now?
Education is sooooo important‼️‼️‼️
Very smart: by controlling gear motors in terms of pid and travel it can be translated into air volume rate and pressure (increasing and decreasing) ramps control, Simple but brilliant.
in the UK, the University of Oxford has something similar. See ruclips.net/video/xdZtMgpxnPI/видео.html
Yes, it's very clever too, but it needs a compressed air source to operate. I had already seen it and I made myself a question: what if the bag inside the box breaks? Could it risks to inflate patient's lungs with a continuous positive pressure?
Maybe a mechanical hand adjustable air stroke cam to eliminate controller and sensor? instead of a programmable stepper motor, possibly simpler fully mechanical.
@@solino2002andrea Add a relief valve or burst disc and make one side of the box removable so the bag can be replaced.
Also could get an idea of volume with a pressure sensor might be able to use an automotive map sensor or a barometric altimeter.
The stepper motor designs are the best I've seen. Ramping and speed settings are keyboard click away. Is it smart to get some low grade cnc software to run on Android/IPhone with sliders to adjust ramp and speed? Excellent looking kit!
Good work! If you ditch the gear and cog system for linear actuators it will be more robust, quieter, and safer. We all love 3D printers and laser cutters but these need to be built for real life settings. Think chaotic emergency rooms. Keep up the good work!
Dr, Malya hello, :-( i missed this video's premiere and have been translating the previous version to FreeCad. FreeCad is free open source 3D cad for LinuxMacWindows. So all can use it. Please avoid 3D printing boxes if Off the shelf electrical boxes suffice. Avoid letter engraving when a stick on label is much faster. Avoid making when buying is better/faster. The new rails and linear bearings are nice but drawer slides are in HomePro and GlobalHouse in Thailand, I will begin with the new files now. Thnak you very much. TomP
Same product in india is being built by mahindra automobile company in less than $100... 😊..proud to be indian.🇮🇳🇮🇳
Thank you
Nice work guys!
hi nice work guys. I would like to know whether you made a function to increase the frequency of motor based on the amount of inhale and exhale of the patient. if the person need more air u have to pump fast. we can increase the speed of stepper motor as well.
Those gears , are kind of looks weak and there is slippage of it .. please make it bigger ...
otherwise it is great
Great job Rice! When is the packet going to be available? I want to start building one and help with any FMEA...
Love it!
My team is happy to get involved in Los Angeles if you guys need any help.
How many type of sensors did u use???
Could u pls kindly let me know??
There are dozens of these DIY bag valve mask videos out now. But all require bag valve. Where do you plan on getting them?
all the old bags and masks can be cleaned in an autoclave, it's the machines that are in short supply. Those cause thousands $$,$$$.00
Has anybody looked into clockwork mechanism? Can't get much lower tech, but don't have to worry about overheating electric motors.
How about a simple retractable band which would wrap around the entire bag , could be a thick plastic cord, and bi directional motorized spool to take up and release, , like a large tie wrap, around the bag,
Sounds good, pls send a draw of your idea
Nice idea I will try this today in india Pune support to community's
Get these people on a plane to General Motors in Detroit immediately and start work on mass producing this stuff. If there was ever a group of people who could accomplish this, it seems like this is it. To me, this would be an awesome assembly of resources and expertise (medical, industrial, technical). It could happen right now.
Finally I am proud to be a mechanical engineer
Give us the instructions. Make it to be open-source. We all need this project as soon as possible to save lives.
A motor with a plunger that pulls to tighten and then loosens a band around the bag valve would work the best and take up the least amount of space and be able to be hung from a hook on an iv stand.
Esas guías lineales son muy caras y difíciles de conseguir, se pueden sustituir por unas guías metálicas para cajones, mucho mas económicas y fáciles de conseguir. El movimiento de compresión se puede simplificar usando un solo motor con un engranaje conectado a su eje que transmita el movimiento a dos cremalleras enfrentadas y unidas cada una de ellas a su respectivo brazo.
hazlo papi
thanks
Ok , how about this ; a car windshield wiper switch set to intermittent, to a car blower motor , to a tube to a mask ? You could hook it to a 12 volt converter or a 120 volt converter ?
it needs precise control like at what speed motor moving
when it needs to slow down when to ramp up
for that you need stepper motor with rotary encoder that can be operated by PID controller
@@dipmansinhvaghela7300 there are many off the shelf parts on ebay and aliexpress that are already gear for very few rpm and with some appropriate speed controller or pwm can dial up or down. the real trick is to be able to precisely pause at each end of cycle . Breathing has more of a pause at the in and out, than a ramping.
@@jamescampbell1060 actually yeah there's nothing complicated in this its just a rotating mechanism thatsa all😅
A rotary cam or connecting rod input automatically slows at top and bottom of a driven piston cycle due to Its circular motion. The best small gear motor I have found on Ebay is Amazon.com: BEMONOC Micro 12 Volt Electric Gear Motor 15 RPM Reversible High Torque DC Worm Geared Motor: Beauty
It is made in 15 rpm @12 v. Speed varies according to voltage.
I would like to help in any way possible. I have been trying to come up with different ways to make simple ventilators from off the shelf parts myself. My son was on a ventilator for 4 months in Stanford, and I'm inspired to action. Ive seen this one rural Chinese family keep their son alive by their determination. I have a well equipped garage already and I'm highly skilled in working with my hands and thinking out of the box. I would love to help in any way.
I'd go with a crank and a cross head or a scotch yoke as I'd worry about the life span of those plastic gears this also would mean the motor doesn't need to reverse which would allow larger selection of motors to be used.
i am not an engineer but i think a scotch yoke or similar mechanism provide for some dwell time at one or both ends as well which may be an improvement if one can control exact length of travel and dwell times. I agree, if the motor never reverses you can easily find small, slow speed motors with a lot of torque that can run 24/7/365. Many linear actuator reversible motors have duty cycles that may only be 25% of the time
is the code for this open source? is there a wiki for HW design, BOM and design details? Is there a way to contribute to this project?
Guys you need to do a stress/N cycle curve analysis and verify that this mechanism can survive a million cycles .... Your device design is not durable enough and it will fail soon. You need to use wider metal gears and a stronger motor with a larger shaft..... Then do a failure mode analysis, patients, doctors and nurses need reliable equipment..... come on. Concept is great but the durability needs to be perfect..... Put a thermal sensor on the motor so you can make sure the motor stays cool or else the dielectric material on the motor windings will sublime earlier than projected and fail in service. Cooling the motor with a fan always works and make sure the motor temperature stays below the threshold. You can get there just make sure you go through a FMA. Keep up the good work!
I see the same kind video of smart everyday
put the bag a tank of water with a plastic box use water pressure and pumps with valves to squeeze it ..it would be perfectly smooth operating better than a rack and pinion more reliable and youd need common available stuff ..small fish tanks small stock pumps for farms etc ..mind you im a machinist not a doc
Are they actually going to be able to be deployed. Seems like so many people are doing similar projects but are they going to actually allow them or are they going to let people die?
big problem is while they will help a patient breathe it is already believed that the use of CPAP machine in the kirkland senior center where over 3o people died probably created an aeorosol of ivrus particles that forced the quarantine of 60 healthcare workers and exponentiall increased the viral load. purifying the exhale exhaust if the real thing that will save tthe healtcare workers
Sir can you please provide the information like codes of tiva and designs it will be very help full for me for my project
Is it open source?
3:31 👍
I would not use that gear system, it is weak and imprecise, copy the connecting rod system that Seat uses, it is a connecting rod that is easier to control the cycle and is silent and durable, here it is about making the respirators as fast as possible.
If you are going to use that gear mechanism I suggest that you add additional support at the tip of the drive gear, it is as reliable as possible.
Yeah, a simple air pump shouldn't cost thousands. The medical world gets fleeced so much over something so basic. Motorized Bellows, filtered air/oxygen in, a couple of one way valves and some tubing. No complex software or hardware, no calibration, no fancy casing, just a simple pump. You can knock these out by the truckload.
Well done.
definitely
Stepper motors might over heat given time and duty cycle. Let gravity do the work with a counter balanced load.
Good
why can you send more detail about spare parts
Eduardo Ramos they want to help. But also use it as leverage to promote the university. Kind of public relations.
I am from Myanmar. We are so poor to provide adequate ventilator for all patients. For instance, in our town, there are more than fifty thousands people and we have only five ventilators in our gevernment hospital. So please upload the detail instruction of it. Please ...
current info is that the problem is oxygenation, not ventilation
simple servo motor a controller Gcode and off it goes
Today I tried with similar at home with the DC motor of a automatic screwdriver. But I think we need more than just sth squeezing a bag valve, like sensors to measure the pressure, patient's symptoms etc. Anyway, I ended up with sth just squeezing the bag valve automatically for now.
Make sure you have a peep valve!
Soon all Arduino will be out of stock in amazon and Banggood😅
Hi guys, how do I interact with you?
What will be the cost
I can do same design with single motor, and same effectiveness
Azeibar Hamza
Motors fail on a constant basis, they need maintenance and replacement.
All you have to do is get the FDA to approve it.
Doesnt need to squeeze from both sides. You just doubled the cost
Disagree. You need balanced force so the mask does not shift on the persons face.
@@ianmiles2505 couldnt they just use a strap on the face to hold it?
Windshield motor unit attacked to a cam.
alguien biene e UPDT?
The whole hospital will be resonating in fart sounds, this will definately lighten up the mood of patients and doctors.
If it saves someone's life, it may be the sound of hope.
Engineers and doctor coming to the rescue when our useless politician’s fail us. Are we great yet?
@Mr.Q
Did you do anything to help in the time like this or just good at mocking ???
@@CL-mp4vn What we can read is a comment certainly sarcastic, but realistic (hello profiteers like Richard Burr and Kelly Loeffler)
Nothing that justifies the lesson giver side of your message.
Unless, of course, you're looking to spark partisan controversy in these dark times.
Have a good guys.
Yes that is true especially when Cuomo turned down ventilators a few years ago instead using that money for solar panels 🤪
good day maam/ sir im sherwin semitara from philippines please help me to make sample design to ventilator for covid 19 patient here in philippines i do research for ventilator can you gave us tips how to make or book to maybe i read like guide or something way to help me
"Hospital grade" your using a 3d printed cog? Theres also no sensors to adjust the rate of airflow to the patient?
Edit: But its definetly better than nothing.
Not sure if this guy is a real Dr the patients that are presenting currently would die on this machine. Sorry to burst the bubble guys. Maybe the doctor should help on the front line with the rest of us!
Give me a design and I will make them
And who do you think is going to end up producing it. If you said China then you get a gold 🌟
Alternative design here:
ruclips.net/video/bWdymb6ZIrs/видео.html
Build it and use it, you don't need to over engineer this
Good device but bad distancing
PLEASE contact New York (Governor's Office) if you haven't already done so. Governor Cuomo appears to be unaware of these devices.
Contact the company itself they will never see your message here...good luck stay safe
I have made it with a simple concept.
Maybe use the pressure from oxygen tanks to power it, no need for a motor 😉
@Dev Guy ruclips.net/video/1yF1jQ8cG4I/видео.html
Arduino.
I was wondering why these were never mentioned. I know from experience that after about 20 minutes of this you get really tired squeezing these things.
Ok, i get the idea that these guys just want to help by coming up with an "icu respirator" that should be both simple to build and cost effective and that probably should also give less developed countries the opportunity to deal with a highly overburdened health system. Noble thought, no doubt.
The main problem with their invention is - and I'm pretty sure that this statement doesn't sound very popular -, that it simply can't work, no matter how you turn it. There's a reason that even simple icu respirators cost a lot of money and are provided by manufacturers that have years of experience in that field. The medical condition that severely ill COVID-19 patients find themself in, is a highly complex situation beeing called ARDS, or lung failure to use a non-medical term. And by simply pumping oxygenated air into a patient is not how it can even closely be done.
People might say "Before patients die because we are short on respirators, we should at least give their invention a try!" I guarantee you, that wouldn't work, not even for three minutes.
Hola, hice un respirador que creo que funciona, no necesita planos, es mecánico, funciona con fuelles de homocinéticas (palieres de auto) Si te interesa te paso las medidas. Aca esta el video.
ruclips.net/video/v-o6G09VVgM/видео.html
Lo que todos no toman en cuenta es que el respirador o ventilador artificial debe tambien ayudar a sacar el aire. Y en marcha debe variarse la velocidad, el tiempo entre inalar y exalar, el volumen de la exalacion que es un poco menor, y el volumen de aire general.
These kind of guys like to show off how smart they are. And that's it. No Entreperial ability between the bunch. This product will never see the light of day. Pretty though.
You are wrong. Over a 100,000 hits. The concept is what matters.
Way too complicated for the Third World and in an emergency in the United States. take a look at this:@.
This is easily constructed using metal, wood, or plastic using hand tools. There is only one moving part and is robust enough to be transported in the back of a truck bouncing over roads, with thousands of holes per mile. All comments welcome.
"When you have a hammer, everything is a nail."
You do not vent Covid-19 with an ambu bag. No no no!!!!
PEEP?
Wow, doc. I hope your arm recovers from patting yourself on the back so furiously. Maybe take a quick break and open source this as it develops? Because of the death and all. Just stick your important Rice logo on it and get on with saving the lives. The time you spent on this video talking up your employer should have been spent teaching others what you know about building these things.
Glad to see you're doing your part shitting on innovation and initiative.
I got medicine for covid19;!
Learn about ventilators:
ruclips.net/video/XRS-94C3y_U/видео.html
this is the definition of over engineered. They could've used one motor, in a scissor or hamme/anvil config and cut down on parts and cost
Yep, first thing I thought. Two motors of that size is way overkill, same with the printed gearing. The BOM could be cut significantly for such a basic operation, but I'm happy they're taking a more simple approach compared to standard ventilators. Necessity is the mother of invention.
@@gazzaboo8461 I have a feeling that even though overbuilt they have built in redundancy with motors as this may be left to operate on a patient in an emergency situation where staff wont be able to constantly check machine is operating correctly. They did say if one motor dies the other will continue to function. also the stroke looks to need a lot of control mabe the gearing option allows for that without to much sensing. My issue is are those rails also attached to linear feedback sensors as i am pretty sure they are not readily available.
we are waiting for your fuc--ing solution pal
Ventilators can be made for less than $50. After overheads - testing, approvals, and greed, it comes out $5,000 to $10,000. I could not believe Rice University could not figure the problem is pure greed and not design.
Stop profilating yourself and Show the public how to build one!!
stupid idea.you just spread infection to the room and risk the medical stuff exposure
What is this garbage? TV, AC, PEEP?
Try getting a CPAP and repurpose it.
AC- Most commonly used
CPAP-What we need now.
“Readily available” is called COTS= Commercial Off The Shelf.