The no-memory engineering of the tubing helps to prevent kinking in the line. One end of the Humidifier Adapter is the threaded nut end (male) that attaches to the threads on the humidifier bottle. The other end of the tubing is the female fitting that slides over the nipple port on the concentrator.
My one-year-old granddaughter was a micropreemie, weighing less than a pound at birth. Although she has several health issues, this does not preclude her from being very active, which in turn causes her nose cannula to twist. Since Mom and Dad can change her cannula only every two weeks, it can get really twisted, causing kinks that diminish or cut off her air supply. It upsets me that this happens and so I've been trying to research everything I can to find a solution for her. There just doesn't seem to be anything that will work for her. Sometimes the cannulas/tubing are more pliable one week than they are the next. It's just nothing we can specifically pin down. The following steps are what I've come up with and it seems to be working so far. I guess time is the true test. I hope it works for somebody else, too.
You can buy swivel connectors for oxygen tubing but I've not found any kind of nose cannula with a swivel connector at the Y junction, which I think would be optimum, keeping the headset stable but allowing the main tubing to swivel. And it's more difficult to find something better for pediatric nose cannulas. I've also read some bad reviews about swivel connectors, that they can leak. It's very frustrating and concerning knowing your loved one's breathing may be impaired because of all the twisting that's going on with this apparatus.
Tools:
Nose cannula
Hair dryer
Athletic tape
Scissors