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RespiraWorks / Ventilator

Fully-featured ICU ventilator design, optimized for manufacture using commonly available components and free to license. Repository tracks all mechanical, electrical and systems design, software, requirements and regulatory documentation.
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Selection: Oxygen inlet fitting, filtration solution #646

Open ebhillstrom opened 4 years ago

ebhillstrom commented 4 years ago
  1. There's a possibility of unwanted junk (coarse debris, maybe stuff that flakes off in the piping) entering on the O2 input. One possibility is to use a metal screen filter for O2 input. A possible vendor:

https://catalog.okeefecontrols.com/category/miniature-in-line-screens---breathers

  1. Find and implement the standard for oxygen inlet fitting for front of device.

  2. Need check valve downstream of oxygen inlet?

ebhillstrom commented 4 years ago

https://www.iso.org/obp/ui#iso:std:iso:80601:-2-12:ed-2:v1:en < pg 63 calls out oxygen filtration requirements

martukas commented 2 years ago

Check valve question tackled in separate ticket #1197

inceptionev commented 2 years ago

We will probably want to use DISS-compliant medical oxygen fitting such as this one: https://mfimedical.com/products/allied-healthcare-diss-male-to-1-8-npt-male-fitting-with-check

inceptionev commented 2 years ago

We can use something like this to mount the DISS fitting to the acrylic: https://www.mcmaster.com/7880T341-52065K401/

martukas commented 2 years ago

Some sort of fittings from #996 would go on the inside end of the acrylic mounted inlet.

inceptionev commented 2 years ago

The 1/8" NPT DISS fitting will not fit the specified (1/4 NPT) panel mounting solution. Here is an alternative: