Table 4 Alternative mask and mask frame design solutions developed to address shortages in N95-tyle masks caused by the COVID pandemic
From: 3D Printed frames to enable reuse and improve the fit of N95 and KN95 respirators
Design Name | Description | Fit Testing Data Available |
|---|---|---|
Copper3D NanoHack | De-novo mask design. 3D printed mask with filter media made of non-woven polypropylene impregnated with 5% copper oxide particles. | No [31] |
HEPA Mask | De-novo mask design. 3D printed mask to house commercial HEPA filter insert. | No [32] |
Injection Molded Autoclavable, Scalable, Conformable (iMASC) system | De-novo mask design. Liquid silicone rubber mask using filters cut from 3M 1860 N95 FFRs. | Yes [38] |
Lowell Makes Mask | De-novo mask design. 3D printed mask with customizable filter insert. | No [33] |
WASP My Face MaskBellus 3D | De-novo mask design. 3D printed mask with customizable filter insert. | No [34] |
Bellus 3D | Mask frame design. Rigid 3D printed mask frame that fits over existing mask; uses picture of user’s face to personalize printed design. | No [35] |
Double Eight Masks Brace | Mask frame design. Rubber band brace used over existing surgical mask. | Yes [39] |
PanFab Mask Frame | Mask frame in two sizes for use with multiple models of N95 and KN95 masks to replace defective straps or damaged nose pieces. | Yes (this work) |