UW-DFab Injection Moldable COVID-19 Face Shield

This design has undergone review in a clinical setting and has been found appropriate when fabricated with the printer type and materials specified.

Submitted by:

JeffreyILipton

Wed, 2020-04-22 21:24

Vertical Tabs

General Information

Model ID

3DPX-013989

Category

Labware & Devices

Device Use

Safety and Personal Protective Equipment

Keyword(s)

3D Printed Face Sheild, Injection molding

This is a modified version of the DtMv3 face shield that has been optimized for injection molding. All of the components(including the elastic band) can be injection molded.. This has passed design review by Protolabs as an injection moldable design. We have not ordered injection molded components and have done our validation only against FDM printed versions out of PLA. We recommend ordering a sample run to validate the design before ordering a large volume run. Before ordering from Protolabs, we recommend contacting them as they will have these designs on file.

A variant of this design is printable on FDM and can be more easily stacked than the original DtM design in a print envelope is also included in this submission. It removes some of the locating features need in the IM design and simplifies the build process. We recommend using HP MJF for larger scale 3D printing as it allows for autoclaving the cradles for sterilization.

This design was developed by:

Jeffrey Lipton (University of Washington)
Mark Ganter (University of Washington
Tyler Williams (University of Washington)
Dmitry Levin (University of Washington)

With feedback from Lee Janko from Protolabs.

3D Modeling/CAD Software

SolidWorks 2019

How to Make

Printer Technology/Material

Other

Nylon

Pre- and Postprocessing Instructions

This design has an variant for injection molding and for 3D printing. We recormend using an ABS that is medical grade for Injection molding.

For printing we recommend printing in PLA with the following settings:

Nozzle Diameter: 0.4mm
Programmed Extrusion Width: 0.5mm
Layer Height: 0.2mm
Shells: 5 (which results in a 2.5mm wall)
Infill: 20%
Infill Type: Cubic
Solid Bottom Layers: 4 (which results in a 0.8mm thick bottom)
Solid Top Layers: 4 (which results in a 0.8mm thick top)

Acceptable alternate 3d printing materials include PETG, ABS, ASA, Nylon. We don't have any information on chemical resistance of HIPS, and we don't recommend this material at this time until the team can conduct further investigation and testing.

The component can be easily stacked in a printer to increase the number of parts per batch. However this requires more extensive post processing to remove supports

Attribution

Attribution Instructions

Please cite as the "UW-DFab V1 Face Sheild"

Documentation

Supplemental Documentation

IFU_IM_Face_Shield _Rev.1.0_04_20.pdf

Reviewer Notes

Dear Author,

Please include print instructions on how users can replicate design if 3D printed.

05.02.20

The following refers to:

3dpx-013989

The FDA has authorized production of face shield outside of the normal clearance pathway during the Covid-19 pandemic, based on Part 5, section D of the “Enforcement Policy for Face Masks and Respirators During the Coronavirus Disease (COVID-19) Public Health Emergency Guidance for Industry and Food and Drug Administration Staff.”

This face shield has undergone review in a clinical setting and is recommended when fabricated as instructed.