refillable Pens??

I know this is might be dumb but are there refillable pens that i can load my slin in from a vial? thanks
Wild

The cartridges are like an elongated vial, so i don't see why you couldn't refill them. As far the question being dump, I didn't think it was, but maybe that cause I think I have the answer:wg:

JohnnyB

well i didnt know. I really just wanted to buy humalog in a pen but i cant find that. I find the pen to be very easy and easy to conceal when i would need to.
Wild