I had the Medtronic Pump surgically implanted in Aug. of 2011. The Dr. recommended I have the larger pump 40ml implanted therefore I would only need to come possibly every 8 months for a refill. I'm an 4'9" petite woman and wondered about this but went with my Dr.s advice, only because of the once a year refill program I would enjoy. When I went to get the staples out from the implant surgery, I was seen by his PA. She told me to make my refill appt. for 3 months. I told her I was only going to need a refill every 8 months, that's why the Dr. put the larger pump in. She said the medicine inside the pump was only approved by the FDA to be in the pump for 90 days. I was EXTREMELY UPSET that I have this huge pump sticking out of my side and now for no reason???? She tried to back peddle now to cover up for the Dr. She said he must of researched this and it was ok. This has left me very uncertain now about this Dr. Can anybody reading this please inform me of your refill regimen. Thanks.