This description will be posted on Insulin-Pumpers, Juvenation, Joslin Message Boards, and Facebook/(I hate Diabetes (type 1)).
I have been using insulin for a little more than 68 years. During that time, insulin has always been supplied in 10 mL (or 10 cc) vials with a stopper, through which a needle with either a syringe or a cartridge was inserted. After all this experience, I have run into a new problem!
Five months ago, after my Deltec Cozmo pump quit working, I started using the Animas Ping pump. Since then I have noticed that almost every time I fill a new cartridge for the Ping, after I insert the filling needle into the vial, with cartridge attached, inject the air into the vial, and invert everything to start drawing insulin into the cartridge, several drops of insulin will leak from the vial around the outside of the filling needle where it passes through the stopper of the vial. Each drop is large enough to cause it to fall to the counter. I do not keep the pressure in the vial above atmospheric pressure except when I start to fill a cartridge.
I am using a standard Ping cartridge, supplied by Animas, with standard filling needle (don’t know the gauge), also supplied by Animas. I am using Humalog, so Eli Lilly supplies the vial and stopper.
Has anyone else experienced something like this? If you have, please identify the insulin you are using, because I suspect the problem may be in the combination of the vial stopper and the filling needle.