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Medical Grade Plastics for Oxygen Delivery

  1. Jun 19, 2014 #1
    Hi everyone,

    I have a question about regulations for medical materials.
    I want to know if there are any sort of restrictions on what kinds of plastics and or other materials you can use for oxygen delivery.

    A bit of background on the question.
    My grandmother is in a nursing home and every day my mother goes to visit her. My grandmother is on oxygen (3 L/m), and recently there has been an issue with them not replacing her tank when it's empty. I know they are busy and there are hundreds of residents and each tank runs out at different times so I'm not surprised it happens. But my mother asked me if there was anything I could think of to fix the problem. Being more of an electronics guy I thought an oxygen sensor or a pressure sensor with a controller and a buzzer should do it. And so as not to have to redesign the wheel I thought something in-line after the tank regulator/conservator and before the cannula would be best. Ill attach a terrible mspaint picture of what I mean.

    but the question is housing for the sensor and the fittings I want to know if there are certain materials that cannot be used. Or if somewhere there is a list of approved materials.

    Or maybe someone knows of just such a device that I didn't find in my google-ing.

    Any direction at all would be appreciated


    Attached Files:

  2. jcsd
  3. Jun 19, 2014 #2


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    Staff: Mentor

    Another solution for 3L/m is to generate the O2 with a machine at her bedside. I will look for some links...
  4. Jun 19, 2014 #3


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    Staff: Mentor

  5. Jun 19, 2014 #4

    Hi Berkeman,
    She does have one of those machines in her room by her bed which she uses when shes in the room, but she spends most of her time "out and about" in the activity rooms. So shes mostly getting air from the tank on the back of her wheelchair. I would venture a guess at size D or JD, they aren't very big.
    she doesn't use a conservator (nurses said she was a mouth breather so it wasn't getting the suction to start delivery) so she runs the tanks down a bit faster than others. probably part of why they aren't always on top of her empty tanks.
    but it wasn't a bad thought so thanks
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