PAPR adapter: hose to 40mm threaded insert for mask filter
Description
Full Fusion 360 design can be found here: https://a360.co/2QHDYmR This hose adapter allows 3M PAPR hoses to connect to full face respirators that accept 40mm threaded cartridges (AVON and Scott masks). The second cartridge hole of the respirator should be plugged to prevent air from flowing in the reverse direction through a filter Designed using the 3M Adflo Powered Air Purifying Respirator (PAPR) System into the filter connection of the Scott Safety™ ProMask 25 Full Facepiece General Use Respirator. The idea behind this adapter is to provide airflow into the full face respirator, which can be sanitized. This airflow could help first responders and medical staff breath purified air while seeing patients (COVID-19). This is not designed as a ventilator for patients, but instead to support hospital staff in working conditions. This will screw into the 40mm threading that fits any 742 Twin Cartridges, NIOSH 42 CFR Part 84 approved filters (AVON and SCOTT masks). The STL prints well without supports. I used 0.2mm layer height PLA when printing with good results on Ender 3. https://www.3m.com/3M/en_US/speedglas-welding-helmets-us/adflo/ https://www.fishersci.com/shop/products/scott-safety-promask-25-full-facepiece-general-use-respirator-3/p-3163726 The PAPR system providing the air is “designed to help keep welders fresher, cleaner and more comfortable, … help(ing) deliver fresh, filtered air around the face and head.” DISCLAIMER: This is not an approved medical device and has not been rigorously tested. Further testing may be needed. Use this at your own risk and discretion, in accordance with FDA policy. See this document for COVID-19 guidance: "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": https://www.fda.gov/media/136449/download?fbclid=IwAR3KWWq1zpwgq_K4XTj86ZYbYIduxV8sVxRJH0CXRCcj0kvDUPR2vb6Qk0o
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