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Medtronic 640g. Bubbles in the tubing

S

shelaughs

Member
Messages
6
Location
Hesketh Bank, Nr Preston, Lancs
Type of diabetes
Type 1
Treatment type
Pump
I have been using the Medtronic 640g Insulin Pump for five months and I have had a problem with bubbles in the tubing, some are small bubbles but this seems to be getting worse, in the past 12 days I have had at least 6 large ones varying from 9cm to 19cm, The healthcare people don't seem bothered, I would like to know if anyone has had this problem, surely it is not normal, I am continuously checking the tube. I was previously using the Animas Vibe which never caused any problems. Thankyou Sheila
 
shelaughs said:
I have been using the Medtronic 640g Insulin Pump for five months and I have had a problem with bubbles in the tubing, some are small bubbles but this seems to be getting worse, in the past 12 days I have had at least 6 large ones varying from 9cm to 19cm, The healthcare people don't seem bothered, I would like to know if anyone has had this problem, surely it is not normal, I am continuously checking the tube. I was previously using the Animas Vibe which never caused any problems. Thankyou Sheila
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Do you make sure the insulin vial is at room temp before filling the resevoirs? If you are using them straight from the fridge you will get "champaigning" . Just a thought
 
porl69 said:
Do you make sure the insulin vial is at room temp before filling the resevoirs? If you are using them straight from the fridge you will get "champaigning" . Just a thought
Click to expand...

Hi, I always use room temperature insulin, and when filling the vial, I let it rest for a few minutes to make sure any bubbles rise to the top before filling. I do think that the size of the bubbles seem excessive.
 
Hello, do you tap while filling the reservoir? Push bubbles out when you see in it the reservoir window? Prime tubing? Like I push insulin out when attaching the reservoir to the mio.
 
For me, bubbles don't happen when filling the reservoir, but hours or days later. My glucose will suddenly rise by 60 or 80 points in just 30 minutes - without having eaten anything for 6 or 8 hours. That's when I know to check for bubbles. I think it is because the tubing doesn't connect properly to the reservoir. You're supposed to twist the tubing connector until it is tight, but sometimes, it just never tightens. It just twists around and around. Even when it does seem tight, the connector seems crooked, not sitting flat on top of the reservoir. Anybody else have this problem?
 
Probably not too helpful with the problem but have noticed some insulins create much more air bubble than others.

Fiasp is top of the bubble charts, Lyumjev follows, and Novorapid was least bubbly (for me)

Not had issues with that causing problems as the orientation of my pump when worn is mostly horizontal (so bubbles stay in the reservoir)

Have a look at 'Hid-in' belts (or similar) if you think this could help.
 
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