polySpectra Covid-19 Compiled Efforts - Public Links

Michele Guide
Michele Guide
Last updated 
This is a compilation of the calls for help, organization efforts, and shared files around 3D printing parts for the Covid-19 crisis.

If you have suggested additions, please email: covid-19@polyspectra.com



Collaborations for urgent medical supplies (e.g. ventilators)


Open Source Ventilator Ireland and OpenLung in Canada
UCSF Library Makers Lab
UCSD Anesthesiology Department
  • UCSD department of anesthesiology collaborating with engineers to design a 3d printable splitter for a ventilator to connect one machine to four patients
    • from UCSD's Sidney Merritt, M.D. facebook post 3/16 12:47 pm: "The UCSD department of anesthesiology is working on constructing simple ventilators. Who is local to San Diego who can offer 3-D printing if we need it?"
Covent-19 Challenge
  • Open innovation effort by residents at Massachusetts General Hospital to design a rapidly deployable mechanical ventilator
OCSMS
    • open source document that has tried to touch upon all of the emergency response supplies needed to support COVID-19 action, including the PPE a la respirators/ventilators

Networks connecting makers with healthcare professionals in need


Women in 3D Printing compilation page
3D Printing Media Network
Formlabs
  • Form for connecting those in need with those who have engineering, clinical, and 3D printing resources to offer
3D Heals
  • Form to connect local 3D Printing manufacturers, designers and local health care providers/hospitals
Ultimaker
  • Form to connect makers and those in need
CrowdFightCovid
Reddit:
Fathom:
Hackers and Hospitals:
NECSI Slack
PPE for 3DP Discord:
National Security Innovation Network:
The UK Government - Department for Business, Energy and Industrial Strategy:

Parts


Venturi valve
  • Isinnova - the original group in Italy that produced Venturi valves 
    • See video on FB in which Cristian Fracassi and Alessandro Romaioli discuss the design and manufacturing needs for the valve
      • "the original pieces are better than the 3D printed ones"
      • "the first prototype was too rough and did not allow the valve to mix the oxygen properly"
      • "inside is a hole with diameter 0.6 - 0.8 mm which is very difficult to print even with the most advanced machines. This hole must have perfect circularity... used a manual cutter to obtain perfect circularity." 
      • "the product must be... sterilized with bleach or ammonia" 
  • Github page contains part files that look the same as the ones Isinnova made
  • Post by Davide Sher contains pdf (in Italian) that shows how this particular Venturi valve is used
  • GrabCAD open sources files for Venturi valve
Face Shields
Face masks 


Medical Device Information


Ventilator components
  • Science direct info on Venturi valves in ventilators
  • 3D Printing Media Network post by Davide Sher on CPAP model and replacement parts
    • the PDF in Davide's post shows what looks like the same Venturi valve used by the Italian group, coupled to the other parts of the device:
      Screen Shot 2020-03-21 at 11.20.44 AM.png 832 KB View full-size Download
  • Proto_CPAP_alto_flusso.pdf 305 KB View full-size Download
  • Johns Hopkins open source document on specifications for mechanical ventilators
  • UK Gov guidelines on ventillator requirements
Splitting ventilators 
  • Society for Academic Emergency Medical paper describing procedure for splitting a ventilator to four patients
    • Youtube video of one of the paper authors, Charlene Irvin Babcock MD showing the modification
  • Pulmcrit Article on splitting ventilators by Josh Farkas, assistant prof. at the University of Vermont
    • Key requirement is having “viral filters”
Overview of Needs
  • OCSMS open source document that has tried to touch upon all of the emergency response supplies needed to support COVID-19 action, including the PPE a la respirators/ventilators
  • Slant 3D article The Problems with 3D printed Respirator Masks

Bigger Picture: