There have been numerous post regarding sensor wires coming up thru the hole.
My issue. , I researched it , what’s the hole for.
That hole is for the applicator needle that deploys the sensor wire under the skin. The needle then retracts and is supposed to leave the sensor wire in place. Sometimes when the needle retracts the sensor wire comes out with it, leaving the sensor wire in the air and an empty hole in your arm (or other chosen location).
@gftaylor answered your question, but for some more information: this is called “goosenecking.” It was a big problem for people last year but seems to have improved. If it happens to you, contact Dexcom and they will replace the sensor. (Sometimes they ask for the defective one back, so keep your inserter and sensor to be safe.)
Thanks
If you mean the Dexcom G7, that small hole is part of the sensor design and the filament passes through it into the skin during insertion. If the filament is actually coming back up through the hole after insertion, that doesn’t seem right and I’d recommend contacting Dexcom to have them check it and advise on a replacement.
I had several problems with this at first until my good friend and Dexcom aficionado @mikep told me to press the applicator reasonably firmly onto my body before hitting the go-button…. And I haven’t had a problem since
And hold it flat to a count of 10, this is key to successful insertions.