Stopgap Surgical Face Mask (SFM) Revision B
*** See the “Documentation” tab for detailed information including the Instructions For Use, Manufacturing Instructions, Bill of Materials, and Test Report ***
*** See the “How to Make” tab for build files ***
This mask should only be printed with Multi-Jet Fusion (MJF) or Selective Laser Sintering (SLS) technologies using powder-bed nylon, or Stereolithography (SLA) using BioMed Clear. This device has not been tested to assess the out-gassing limits of the material or their corresponding health effects.
*** Updates coming ***
We hope to expand our filter and cleaning options. Please check this site for updates.
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The Stopgap Face Mask was created as an emergency action in an effort to protect people by providing backup PPE options if the standard PPE has become unavailable. This device has not gone through the same regulatory approval process as standard PPE.
The Stopgap Face Mask consists of two main components (the mask body and the filter cover) and contains features for attaching two elastic straps and receiving a patch of filter material. It is recommended that the rectangular filter patch and elastic straps are disposed of after every use of this device. The remaining parts of the plastic mask can be disinfected using common disinfecting solutions or sterilized and reused.
Revision B of the Stopgap Surgical Face Mask includes the following improvements:
- Improved breathability
- Reduced internal volume to minimize recycled air
- Larger filter area to reduce pressure drop
- Improved fit
- 3 sizes now available (small, medium, large)
- All sizes have changed to improve fit (check to see if the best fit size has changed for you)
- Flange near face reduced to improve mask flexibility
- Mask angles changed to reduce hard edges in contact with face
- Improved cover snap – better retention and easier to remove
For Revision A, see model 3DPX-013429
Many people contributed to this project and we thank them for their dedication and support:
- Patrick Aubin (Veterans Health Administration)
- Sarah Bastawrous (Veterans Health Administration)
- Jared Bliss (Veterans Health Administration)
- Brian Burkhardt (Veterans Health Administration)
- William Chang (Veterans Health Administration)
- Timothy Davis (Veterans Health Administration)
- Kathleen Decina (Veterans Health Administration)
- Darin Desmond (Veterans Health Administration)
- Stuart Fairhurst (Veterans Health Administration)
- Michelle Gibson (Veterans Health Administration)
- Joseph Iaquinto (Veterans Health Administration)
- Eli Kaufman (Veterans Health Administration)
- Matt Kindig (Veterans Health Administration)
- William Ledoux (Veterans Health Administration)
- Joe Li (Veterans Health Administration)
- Steve Morin (Veterans Health Administration)
- Queenie Ngo (Veterans Health Administration)
- William Nylander (Veterans Health Administration)
- Chris Richburg (Veterans Health Administration)
- Beth Ripley (Veterans Health Administration)
- Brian Strzelecki (Veterans Health Administration)
- Roger Tatum (Veterans Health Administration)
- Luis Tulloch-Palomino (Veterans Health Administration)
- Greg Voss (Veterans Health Administration)
- Matthew Di Prima (Food and Drug Administration)
- James Coburn (Food and Drug Administration)
- Anthony Anderson (University of Washington)
- Lynda Brady (University of Washington)
- Colleen Carroll (University of Washington)
- Alex Hotz (University of Washington)
- Mark Ganter (University of Washington)
- Ian Good (University of Washington)
- Liang He (University of Washington)
- Dalton Hildreth (University of Washington)
- Yuri Hudak (University of Washington)
- William Lack (University of Washington)
- Jing-Sheng Li (University of Washington)
- Dmitry Levin (University of Washington)
- Jeffrey Lipton (University of Washington)
- Kelly Mack (University of Washington)
- Jen Mankoff (University of Washington)
- Connor Mulcahy (University of Washington)
- Alshakim Nelson PHD (University of Washington)
- Monica Ortiz (University of Washington)
- Jonathan Posner (University of Washington)
- Annie Ross (University of Washington)
- Anastasia Schaadhardt (University of Washington)
- Adriana Schultz (University of Washington)
- Anne Turner (University of Washington)
- Megan Hofmann (Carnegie Mellon)
- Scott Hudson (Carnegie Mellon)
- Jim McCann(Carnegie Mellon)
- Aidan Fay (Stanford University)
- Elizabeth Foster (3D Systems Healthcare)
- Benjamin Johnson (3D Systems Healthcare)
- Shelby Marks (3D Systems Healthcare)
- Jacob Ames (Hawk Ridge Systems)
- Brandon Boulden (Hawk Ridge Systems)
- Tristan Butler (Hawk Ridge Systems)
- Mark Dolinar (Hawk Ridge Systems)
- Matthew Fisher (Hawk Ridge Systems)
- Josh Hall (Hawk Ridge Systems)
- Devin Johnson (Hawk Ridge Systems)
- Douglas Nicklin (HP)
- Jack Aubin
- Kavi Dey
- Caitilynn Larmore
- Kelly Richburg
- Sherry Sellentin (Pacific Fabrics and Crafts)
- Kathie Varney (Pacific Fabrics and Crafts)
- Karen Grosh (Pacific Fabrics and Crafts)
Comments
dwpemberton
Fri, 2020-05-01 14:47
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Thank-you
Ben Thank-you for getting rid of the flange. This geometry is a lot easier to deal with.
Benjamin Johnson
Wed, 2020-05-20 14:21
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Hi David,
Hi David,
Credit for SFM design goes to VHA. I'm glad this design works for your unique application.
Best, Ben
Whiskers
Tue, 2020-05-19 20:15
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Great mask, one suggestion though
Great mask and easy the print. The one issue I have that elastic straps keep falling out since the mounting part is an open ring instead of a closed ring. Also it doesn't work well if you have to substitue thicker 3/4 inch elastic due to unavailibility of 1/4 inch.
Can we remix this to modify the mounting part to support thicker elastic?
Whiskers
Thu, 2020-05-21 17:35
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Bigger hole to allow thicker elastic?
Thanks for sharing this. Can you make the hole bigger, so you can use thicker elastic? 1/4 elastic is hard to find, but 3/4 can be found..
When you use thicket elastic it tends to fall out
Abhinav
Thu, 2020-07-16 05:31
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Permission for using in India
Hi -
We have printed a bunch of these masks and as an organization we would like a letter from the inventors of this design authorizing us to use the designs under the CC BY license. Please guide us on how to proceed ahead with this.
VHA Innovation ...
Tue, 2020-08-04 13:23
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I'll contact you directly
I'll contact you directly