My Detailed Review of the MiniMed 670G from Medtronic

The MiniMed 670G from Medtronic is an insulin pump coupled with a glucose sensor.  It uses a computer program (called an “algorithm”) to automate certain aspects of insulin delivery.  I decided to try 670G partially out of professional interest (everybody and their great aunt has been asking for my opinion on the system), and partially out of personal interest, as my blood glucose control hasn’t been the greatest the past couple of years.

Let me start out by saying this:

Since I started using 670G, my overall blood glucose control is better.

I have to keep reminding myself of this non-consequential fact, because every day I find things about this system that I don’t particularly like.

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9 Comments
  1. I like the idea behind the unit but don’t like what it actually does. I’m ending up taking more finger pricks and adjustments than what i use to with my animus/dexcom system. The alerts and working thru the menus is driving me crazy. I want a system that stops delivering insulin when you are 70 period. After 58 years of this that’s all i want. The lawyers screwed this on up.

  2. I went from dexcom g5 and pens to the 670g. I love the way the auto adjustments work. Problem is when the cgm is t working correctly which seems to be a lot. It’s almost always off by at least 20. End up checking my blood sugar at least 5 times a day. I have had quite a few sensors that failed. Very disappointed. My dexcom was almost always with in 5-10. Almost never needed re-calibration and was just easier to use. I think I just want to send this back and get the tslim and dexcom combo.

  3. In the first 4 months of using the 670G I called for support more times than I did in the 3 years of using Dexcom. It is not uncommon to have a difference of 100 points between the CGM and finger stick. I am now on month 10 and miserable I can’t wait to get rid of this piece of shit. “Customer service” treats you like an idiot when you call, keep you on the phone for at least 20 minutes before they agree you have a bad sensor. I am going to talk to my Dr. and see if I can get the Tandem pump and Dexcom. I totally hate the 670G

  4. I habe had three meditronic pumps and the sensor system is really bad. I was pretty excited about about getting the 670g. Boy was I disappointed. The sensors in this system is by far the worst pump yet. I have called meditronic at least a dozen times as I wanted this pump to work. The sensors are not transmitting or there not connecting. I recently called and the tech told me it was a bad transmitter and of course the new transmitter will not connect. At least the 530g worked some of the time. I am so disappointed with 570g. What a piece of crap? Don’t waste your time or money on this.i am so sorry that I bought this.

  5. Wow! I’m so glad I’ve been doing my research! (I’m a research nut!) My doctor highly recommended this pump. Said she her patients have been tremendously pleased and their numbers are much better.
    I’ve used the Medtronic pumps in the past along with the guardian sensor. I never had any luck. It almost turned me off of pumping while using a sensor completely. I’ve had diabetes for 43 years with NO complications at all. I’ve never even been to the hospital for anything related to diabetes, so I did not last more than a year on the sensor. Finger sticks are much more reliable. And my A1c proved it.
    Then I decided to give the CGM another try, but I used the Dexcom. When I tell you that my Dexcom is 95% accurate, I’m telling the truth. And when it isn’t, it is normally my error, not the sensor. I would love to see Medtronic allow the option of choosing which sensor you want to use. I know that would probably be an algorithm nightmare but a girl can dream, right?
    On top of that, as much as you pay for these pumps, then they don’t work? I’d be very upset to say the least because unless you pay out of pocket, you are stuck with it until the warranty is expired. I’m just thankful to find normal people doing reviews so someone considering the pump gets a real review rather than one that the company pays for. And of course there are people that the pump will work for, But in my pumping time, I’ve been through six pumps and I have not had good luck with Minimed at all. I love the T-slim that I use along with the Dexcom sensor. It’s my partner in crime. I rely on it constantly, sometimes too much, but it never gives me any grief. I got drawn in by the idea of a closed loop system and thought I’d give it another try.

    I’m glad I didn’t. Thank you!

  6. This is the worst pump system ever, I have had it for around a month, had maybe one night of full sleep. If its not waking you 3 times to tell you it’s going in to suspend mode, it then goes and tells you that it’s resuming; which you must press 3 buttons each time it goes off. The same if the blood sugar goes high. It’s accuracy of it’s monitor is a joke. Simple is better Medtronics, This pump is a POS. The amount of time to connect to the sensor is pitiful. First you have to reset the transmitter, then pray it connects to the sensor. Animus pump is simple and far superior. Save yourself from having a stressful day everyday, don’t get the Minimed 670g pump. They are oversized; it gets caught on everything and rips out the belt clip; requires a minimums of 3 button press to deliver insulin, or 3 or more time to clear a message, which if you don’t hit it enough it goes off every 5 minutes. Again avoid the hassle pass on the Medtronics line of insulin pumps! As soon as the warranty period is over, I am going to try and find a better Pump system.

  7. Wow! If only I had waited. But I really couldn’t. Roche abandoned the US market and transferred all their ACCU-Chek customers over to Medtronic.

    https://www.healthline.com/diabetesmine/roche-hands-off-remaining-pump-customers-medtronic

    My endo suggested the Minimed 670G as a replacement for my ACCU-Chek and Dexcom G5. I started using the 670G in February 2018. I miss my Dexcom G5. The G5 was solid and getting my reading on my iPhone was fantastic. Repeated calls to Medtronic for when the 670G might have this feature leave me feeling like it will never happen.

    Downsides of the 670G:

    1. Too many finger sticks for calibration of new sensor. Sometimes the devices gets stuck in a loop. I have easily used 20 tests to calibrate a new sensor.
    2. Four hours is too time for sensor warm up.
    3. The pump/CGMS interface is the only way to operate the pump to accept test data and deliver insulin. Every time I need to eat I have to pull the tubing out from where it’s tucked in.
    4. Eating means testing, waiting for the meter to send data to pump, accepting the reading, unlocking the pump, selecting bolus, entering carbs, accepting bolus, selecting deliver.

    Upsides of the 670G:

    1) The algorithm is solid. A1C has improved.
    2) Changing insulin cartridge is easy (although it’s a lot of steps)
    3) Changing infusion set is easy

  8. This would have been my third pump, my first the Omnipod, and then I switched to Medtronic because I was dealing with too many occlusions and constant alarms. Being an ER nurse, this made this too cumbersome to deal with when dealing with critically ill patients. My last pump the 670G, I was really excited because its features were coming closer to having an almost natural like external pancreas. I received my pump, couldn’t schedule training for two weeks do to the reps schedule, and then started immediately. My first concern is that the infusion set were causing me a lot of pain to insert (EVERY time, usually some of the time in the past) and were becoming either occluded or dislodge very easily, causing small painful lumps (lipohypertrophy) under my skin. We changed infusion sets to the ones typically used on pregnant women and children (shorter needles and less painful to insert). After this I began to develop SEVERE skin reaction, I noticed blood under the adhesive (which I thought was coming from the site). When I went to change my site because it was too painful there was blood oozing from my injection site abut the adhesive was pulling my skin up too. a large patch of missing skin from where the adhesive was applied . It was so painful, I had to wear a non adhesive bandage so clothing would not rub it and had to take OTC pain medication because I now several lipohypertrophy sites along with patches of missing skin, I was in pain and felt like I was a walking petri dish waiting for an infection to start. Even as a health care professional I was SCARED. We know as diabetics we must be careful for any source of possible infection, especially skin. I contacted Medtronic and we tried different types of adhesives and they all did the same thing, pulled my skin up with removal. I tried using skin prep, alcohol over adhesive to loosen, even Vaseline and vitamin E oil to help loosen to remove but my skin was not liking this adhesive. While I have always had a slight reaction to bandaid adhesives, slightly reddened/itchy but goes away in a few hours, never has it pulled my skin off with it. Eager to still want to try an alternative because Medtronic staff were not medical professionals, I waited until my next appointment with my endocrinologist (unfortunately a little over two months -as we know specialists are very busy and difficult to schedule with) and went back to injections. He advised me based on his assessment and the pictures of the original wounds to stop using the devices (pump and CGM), the risks for infection were too grave. When I advised Medtronics, they told me that it was my not physicians decision to stop it, he ordered it and that they could give me more training. How is more training going to stop me from having a reaction to your adhesives. They would not take their machine back which has only been used for about 1 to 1.5 months as I stopped using it and went back to injections after t=about 4 weeks (mind you my sites were being changed more frequently because of lipohypertrophy and the pain) and they refused to allow me to return my unused supplies (the supplies were still in their original shipping box, unopened) nor the almost $10K+ pump and CGM (that my insurance company only paid a portion of). Their response is that they have a 30-day return policy. In their response to my BBB complaint, they imply their customers are important – how so when I told you my scenario, your 30 day return policy is ridiculous when you don’t train for 2 weeks and my issue was not mechanical but health related, and your only recommendation is to continue to offer me “additional training.” How is additional training going to eliminate the risk for infection? Shame on Medtronics. for being one of those BIG CORPORATE BULLIES. They are more concerned about their bottom line rather then the safety of the patients who use their equipment. I also tried to tell them that I cannot where an insulin pump without a physician to monitor and order the insulin. They still want me to accept more training. BE WARE OF BIG COMPANIES WHO DO NOT CARE ABOUT THEIR PATIENTS. As a nurse, I took an oath to do no maleficence (to cause no harm or destruction, especially by supernatural means). Perhaps Medtronics if they want to stay in the health care field should take the same oath! I only hope there are not others out there being coerced in this manner.

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