Mask Frame "CEG Extreme" and Small n95 fitter (High Filtration with Halyard H600)

thingiverse

I'm a doctor in Connecticut who's using my 3D printers to fight COVID. This is a frame and tutorial for making high-filtration masks from blue operating room tray material called Halyard H600. Watch this video on YouTube: https://youtu.be/xVYypLYEo_0. This mask design has been approved by the NIH for community use: https://3dprint.nih.gov/discover/3DPX-013690. Donate to my GoFundMe campaign here: https://www.gofundme.com/f/doctors-3d-printing-masks. The main file in this pack is called "CEG_REGULAR.stl". It's an adaptation of a mask sewn from this material proposed by Dr. Bruce D Spiess, who claims it filters 99.9% of 0.3 micron materials, making it better than N95 masks. You can find more details about his design here: https://ufhealth.org/news/2020/uf-health-anesthesiology-team-devises-respirator-mask-made-existing-hospital-materials. At the Musculoskeletal Institute at UCONN, we adapted a face frame to allow 1 or 2 layers of this material to be pressed to your face instead of sewing it, if you have a 3D printer. The files are open source and can be used non-commercially to make these masks, as per your hospital policy, given the CDC's relaxed guidelines for homemade masks. Please let me know any ideas for mods or improvements and I'll do my best to address them. Thank You: * Bruce Spiess, MD FAHA - UF Department Anesthesiology * Michael Baldwin, MD, UConn Radiology * Jason Hancock, PhD, UConn Physics * Cindy Polinsky, Executive Director UCHC-AAUP * Joseph Luciani, Director, Proof of Concept Center, UConn * UConn, Hartford Hospital & St. Francis Medicine Residents * Orthopedic Surgery Fellows * Sean London, MD, Emergency Medicine * And many others The original face frame idea was from 2ROBOTGUY, thing:4231792, thanks so much for your work on this idea! Disclaimer: These designs represent my own ideas and not an institution's. The efficacy of this mask exoskeleton is not guaranteed. This is a concept for emergency use only and as a last resort. It does not replace approved masks. Use as you see fit, with no guarantees. 4/7/20 Update: For an alternative to phlebotomy tourniquets, and if elastic straps are in short supply, check out this clever idea by kelkelkelvin to use 3D printed clips and a chain of hair ties for the straps instead: https://www.thingiverse.com/thing:4266669. 4/7/20 Update: Not all filament is created equal. Certain filaments are too brittle and cannot handle the flexing at the nose bridge as much. We prefer the original thin frame (1.0 mm) as our PLA is flexible and not brittle, but have added a 20% thicker (1.2 mm) version to combat filament brittleness. Please give feedback about which works better for you, or if you prefer other filaments such as PETG. 4/13/20 Update: "CEG Extreme Fusion CAD file.f3d" has been added. Thanks to Everett from Nevada! 4/20/20 Update: "Small n95 Frame" has been added. I found a new face height (100mm) that worked to seal a surgical mask and an N95 to the face of one of our residents who typically requires a small N95. This fitment was requested by multiple Boston hospitals facing a shortage of size small N95s to adapt normal-sized N95s to faces. 4/27/20 Update: "Small n95 Frame" has been made thinner, instead of 2.0mm it is now 1.2mm so it can flex over the face better.