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Coronavirus PAPR Hood

An easy to build a low-cost PPE hood

canine-defense-technologiCanine Defense Technologi
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Hi everyone. I have built this hood designed for Healthcare workers in mind. I based on the design of 3Ms PPE hood helmets, but in my case, this is a softshell version using an already open source 3d printed face shield as the base ( https://www.thingiverse.com/thing:4204061 ). The hood is a simple 3 piece sewn design with an elastic band sewn around. A thin piece of transparent plastic is sewn on the front. The system does not have to be airtight, for clean, filtered air is pumped in from the tubular section of the hood near the back. This is to maintain positive pressure at all times, so the hood is at all times blowing out clean air to keep airborne pathogens out. By keeping the design to work on positive pressure, it makes it easier to manufacture due to the simple design. There is

Currently I only have the proof of concept and am working with a team to develop the system. If you have any suggestions please shoot me a message. The overall project may seem pretty primitive for now, but I am getting very good tips from Engineers and Front Line doctors. 

V2.2 HOOD VISOR SIDES.pdf

Pattern for the side of the visor. Sew onto visor plastic. Cut 2X

Adobe Portable Document Format - 1.50 MB - 04/06/2020 at 05:00

Preview

V2.2 HOOD SIDE.pdf

Pattern for the side of the hood. Cut 2X

Adobe Portable Document Format - 1.49 MB - 04/06/2020 at 04:58

Preview

  • V2.2

    Canine Defense Technologi • 04/04/2020 at 08:00 • 1 comment

    Hi everyone! Sorry for the oversue update! I have been working late everyday constantly iterating on the hood design. Currently it is V2.2! It looks just like the ones they sell! It ia also made of Tyvek now. I can't wait ti ship these to some docotors who want to checm it out before it will be produced. This would've never been possible without the feedback of the team at 1 Million Ventillators, Front line medical workers, and my parents! I am so happy with V2.2! It is simplier, has higher visibility, easier to build, quicker to build, very comfortable, and has a better seal! In other words better then any of the balloon like horrible deisgns :p

  • SEWING PATTERNS ARE ONLINE

    Canine Defense Technologi • 03/28/2020 at 19:18 • 0 comments

    I have made and attached a preliminary prototype sewing pattern. Note this is still a prototype 

  • UPDATE 1

    Canine Defense Technologi • 03/28/2020 at 18:11 • 0 comments

    I am very happy to be a part of the "Helpful Engineering" and "1 Million Ventilators" both amazing projects to help with Covid 19. I am on the PAPR hood R and D. Currently I have been sourcing a lot to information to continue onto V2. V2 will be tyvek and much more simpler to build. I am working on the patterns ASAP 

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varughesekamryn783 wrote 12/09/2023 at 11:15 • point

I'm happy to hear that I may get a lot of knowledge from this initiative and use it to my own project,  Buy Miracle Smile.

  Are you sure? yes | no

raymondreaves38 wrote 12/04/2023 at 08:29 • point

I am glad to be hear and learn a lot from this project which I can improve my project Pore Clogger Checker.

  Are you sure? yes | no

joe.jasniewski wrote 04/08/2020 at 03:10 • point

Here's another idea for the filtered air supply end - https://hackaday.io/project/170766-diy-ppe-for-covid-19-infection-avoidance

  Are you sure? yes | no

Canine Defense Technologi wrote 07/28/2020 at 04:34 • point

Hmm that looks promising 

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deepaksethu wrote 04/07/2020 at 06:53 • point

Thank you of all of your work..Much appreciated

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Canine Defense Technologi wrote 07/28/2020 at 04:34 • point

No problem! Just a small way I can contribute and help 

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crun wrote 04/06/2020 at 08:04 • point

While there are plenty of nice box and other cartridge filters, you can make a filter by sewing a cone of filtercloth, and sleeving it inside a straight tube (of tyvek) , blowing air from the wide end. This arrangement is light, soft, and all sewn construction. [Before the lockdown I made sure to buy 5m of high performance filter cloth. There was a warehouse full of rolls of the stuff]

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Canine Defense Technologi wrote 07/28/2020 at 04:35 • point

Yes I have looked into it. Thinking of modifying N95 masks. With a blower the mask life will be lengthened significantly 

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Dan Maloney wrote 03/23/2020 at 16:59 • point

Here's an idea for the air filtration end: https://hackaday.com/2020/02/12/hacked-protective-gear-keeps-doctor-safe-in-the-hot-zone/

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Canine Defense Technologi wrote 03/23/2020 at 17:47 • point

Thank you! That's very interesting! I guess I could look into portable car air filtration systems 

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