I do a lot of “bad things” here… First, yes, frequently, I change the site and not the cartridge or tubing (just did so tonight, in fact, though I may be doing it again, due to a possibly poor insertion…). I rarely, if ever, change the tubing without either refilling or changing the cartridge (I know, refilling might be a bad idea, though I’ve seen no adverse indication thus far).
Finally, one more ‘bad thing’ I do (blame it on the Asante Snap being my first pump), I somewhat overfill the cartridge when I fill it – so that there are 15-20u more than it’s 200u capacity – that allows me to emulate Snap’s “auto-prime” feature – when I screw down the cap and ‘load cartridge’ I get a small amount of insulin to come out the end of the tubing, so that when I “Prime” it, I only prime 1U!). Works well for me, but only because I fill my cartridges from pens - by pushing the insulin into the cartridge with the pen mechanism (otherwise, I could pull the plunger too far and lose all the insulin!). I do not ‘prime’ through the set, but rather insert the set first, then disconnect and prime the tubing. After re-connecting the tubing again, I prime the cannula – again, this mirrors how I changes sets/sites with the Asante pump.
I know, bad habits, but they’ve been working well for me, and make life a little bit easier. Isn’t that a good thing?