ResMed H5i & heated tube & oxygen

I am quite disappointed that I have to run another tube for Oxygen to my mask, which does not have an oxygen port, when using the heated tube with the H5i humidifier.
It looks like I can get the 1/4" oxygen tube into the humidifier tub and into the heated hose. This would then mix with air and carry the oxygenated air to the mask.
When using the standard tube there is an check valve before the oxygen input.
Safety concerns:
Oxygen rich air in the electrically heated hose.
Backflow of oxygen if humidifier is off and oxygen is on.

Which brings up another question: My oxygen concentrator is a Respironics concentrator that is not smart. A full mechanical switch to turn on and off. If the switch is left on I can
control the concentrator by unplugging it from the wall or a switch in an extension cord. Has anyone seen a 115VAC switch that can be controlled by the pressure in the CPAP hose?

I am a electronics failure analysis engineer, chemist and metallurgist and do not want to have to do a failure analysis of a device that is 3' from my head.

Thanks for your thoughts.

May help if we know what mask and machine type you are using. Consider filling out your equipment profile in your User Control Panel.

I did it. I wanted to get rid of the oxygen hose running to the mask in addition to the heated hose on my Hi5 humidifier.
I drilled a tight fit hole in the "lift up" lid on the humidifier, then ran the O2 hose in it, into the water chamber and up into the heated hose about 8".
When I close the lid, the hose in the water chamber snakes back in and the lid snaps shut. So now no separate hose for oxygen coming
to my mask.

Also, I bought a remote controlled extension cord (think Christmas Tree on/off remote), at Home Depot for about $15, for the Respironics Concentrator. Now it can be across the room and a little quieter at the bed. I put the
small remote switch on the ResMed Auto so I can just reach out and turn the O2 machine on as soon as the APAP comes on. The
instructions say to start the oxygen after the APAP is on, otherwise the breathing tube would fill with 90% oxygen, which might not
be good.

My doctor asked it I was an engineer when she reviewed my setup. She was also impressed with the reports I took in that were done on Sleepyhead.

DoubleL wrote:I Has anyone seen a 115VAC switch that can be controlled by the pressure in the CPAP hose?

This is going to sound weird, but hang with me for a minute. In-Sink-Erator makes a push-button switch that mounts into
the countertop and controls a disposer. Since a switch recessed into the counter near the sink is very vulnerable to
water intrusion, their system is pneumatic.

The countertop "switch" is linked by a length of plastic tubing to the electrical switch unit. This unit plugs into an outlet, and the
disposer plugs into the switch unit. Pressing the "switch" increases the pressure in the tubing, and the pressure change causes
the switch unit to activate the disposer.

I don't know how much pressure is required to activate the switch unit, but it can't be very much. They are available at Home
Depot. Here's a link for more detail:
http://www.homedepot.com/p/InSinkErator ... Z1vVMqGxns