CORRECTION CORRECTION CORRECTION
I just checked and this is incorrect! Both Animas and Medtronic recommend that you do not take your pump through the body scanner (the magnetic metal detector is OK). The consensus of comments online seems to be that the doses of X-rays from the baggage scanner is high and likely to cause problems. With the body scanners it is more a case that the pump manufacturers are being cautious as they have not carried out the appropriate tests.
I have taken my pump many times through the body scanner as it ALWAYS sets off the metal detector alarm. I don’t know if this is connected with the recent failure - I suspect not but will never know.
BTW if you think TSA in the USA is bad you should try Paris Orly!!! Took my about 20-30 mins to get through even though I was willing to walk through the body scanner. AND I speak reasonable French (none of the security spoke ANY English at all - I would hate to try it as a non-French speaker). Personally, given the choice in future I would still walk through the scanner as the alternative would likely be not to be allowed on the flight.