I’ve read this thread but remain uncertain about the actual configuration of the Libre glucose monitoring system, particularly how the sensing element is placed under the skin.
I do not use the Libre so I have no first hand experience. I do use the Dexcom G4 system and I had assumed that the Libre worked similarly and now I’m not so sure.
The Dexcom uses a hollow introducer needle that contains the sensor wire. Once the introducer needle with the sensor wire is inserted under the skin, the introducer needle is then withdrawn leaving the smaller sensor wire embedded in skin tissue.
The Dexcom system use of an introducer needle means that the needle is necessarily a larger diameter than the sensor wire it houses. Doesn’t the Libre work in the same way? Doesn’t it use a larger diameter introducer needle and then leave behind a smaller sensor wire or filament?
Or does the Libre simply use a stiff enough sensor element that can be injected under the skin by itself?