I have been an Animas/Dexcom customer for years. Upon receiving word that Animas was going out of business, I wanted to switch to another pump. I heard about the “closed loop” system that Medtronic offered via the 670G. I was really excited about it. I started using the 670G 2 weeks ago, and I’ve been very unhappy with certain aspects of it …well, that’s putting it nicely. To be honest I actually hate this system so far…
I met with a Medtronic rep today to help adjust some of my pump settings. She told me that "everyone hates the 670G in the beginning and that its even more difficult when you’ve been a “good diabetic” who likes to “micromanage your care”* but to give it about a month and I will eventually “love it!”
I’m still having roller coaster ups and downs, so the celebrated function of the 670G makes no difference to me right now. The complaints at this point outweigh the good.
A few nights ago, my 670G told me that I was at a BG of 60 and dropping. I ate a snack, but felt a bit suspicious given my symptoms. Upon testing a finger stick (before the snack even had time to sink in) I discovered that I was (actually) at a high BG of 434. I tried to re-calibrate, and this caused a “sensor fail”.
What I really don’t like about the 670G is the Gaurdian sensor system. In addition to the fails, there is not an adequate amount of warning time before it suddenly expires and needs to be replaced. I actually have to keep track of a separate, tiny, battery powered “charger” and when I change my sensor, place the transmitter in the charger for what feels like a long time before it is inserted. I THEN wait the additional [2 hours] for the warm up period,(not a fun experience when a “sensor fail” occurs at 11pm and you have to wake up for work at 5:45am.)
In addition to that ridiculousness, there is a large plastic “staple gun” that is needed to insert the sensors, AND… unlike the Dexcom there is no adhesive backing, instead the Guardian sensor must be attached to the body with a very sticky adhesive tape that makes putting it on a “project” and leaves a sticky, black residue all over the sensor and my skin.
Other things I dislike about the 670G are the insulin reservoirs - which waste insulin and do not make it convenient to carry extras cartridges when travelling. There is a USB meter that plugs into the laptop to download info from my pump for Carelink - which is how the doctor gets my readings. Using Carelink requires downloading all sorts of outdated software in order for it to function. I’m talking JAVA and Internet Explorer outdated. It feels like a step backwards in context of the type of technology that is available today!
I do not like having to keep track of these small additional parts because if one thing is lost or misplaced I’m totally screwed! Last year I traveled to Ecuador and had to pack 10 days of diabetic supplies, I was very appreciative that the Dexcom system was compact and easy to carry. Going through airport security with a pump and CGM, is nightmare enough let alone having to keep track of an extra travel bag for all of this extra diabetic stuff. I can not imaging traveling overseas with the 670G and all of its accoutrements.
One more thing before I end my long list of complaints is the environmental impact. The 670G uses 1 AA battery (preferably lithium) PER WEEK!!! (and I thought that going through one batter every 3-4 weeks with the Animas was bad.)
How is Medtronic the only company to offer a closed loop system at this time when everything else about their product’s design is fast approaching obsolescence??? Had I known then what I know now, I never would have traveled down that road. I dread the thought of being stuck with this system that makes so many aspects of being a diabetic worse than they already are.
For those of you on the 670G, do you ever get past the point of hating it? Or do you suggest I “run now” and get the Tandem t-slim/X2 before its too late to exchange?