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Medtronic issues warning concerning the Mini Med 640G

Medtronic have issued a warning to insulin pump users on specific models of MiniMed pumps, following reported incidents of a potential faulty mechanism with the pump. If this happens it could lead to over or under delivery of insulin.

There have been reported incidents with the MiniMed™ 600 series insulin pump of a loose reservoir that can no longer be locked into the pump. The reservoir can become loose due to a broken or missing retainer ring that prevents a proper lock. The retainer ring can be broken, for example as a result of dropping or bumping your pump on a hard surface.

If the reservoir is not properly locked into the pump, it could lead to over or under delivery of insulin, which could then result in hypoglycemia or hyperglycemia.

This issue may affect users on the MiniMed™ 600 series insulin pump. The pump model number can be found directly on the bottom or on the back of your device.

Insulin Pump Model Number

MiniMed™ 640G pump MMT-1711, MMT-1712
MiniMed™ 670G pump MMT-1780, MMT-1781, MMT-1782

Medtronic has issued the following actions for users of its insulin pumps:

  1. Examine the retainer ring on your pump.
  2. If the reservoir does not lock into the pump or the retainer ring is loose, damaged or missing, discontinue using the insulin pump and revert to a back-up plan of manual insulin injections per your doctor’s recommendations. DO NOT insert the reservoir back into your pump while connected because you could mistakenly give yourself a large insulin bolus and contact our Helpline at 01923 205167.
  3. If your reservoir properly locks in place by the retainer ring, continue to use your pump. Remember to always follow the Instructions for Use on how to correctly insert the reservoir.

For more information, visit the Medtronic website or call Medtronic on 01923 205167. Or talk to your diabetes team for advice.

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