I don't think the majority of us have implanted devices but I wouldn't say it's definitely not at fault for your UC. I would google it but it seems pretty random, there probably won't be too much information out there. I hope you find some answers.
Diagnosed with mild proctitis in March 2007: Treated with Canasa 2x Daily
December 08: Began treating with Asacol 400mg (9/day) + Canasa 2x/day - Anemic
May 09: Off Canasa, taking Asacol (9/day)