Hi, I hope somebody can help me with this question, as I can't seem to get a straight answer from the doctor. My husband has had an internal cardiac defibrillator for a year now, without any problems at all. We are planning a 7-day hiking holiday, where he would be carrying a backpack weighing about 10kg. The backpack strap would be rubbing right over the defibrillator site and the doctor does not think this is a good idea. Has anybody heard of, or know of, any type of custom made backpack, which would avoid this strap rubbing? Or perhaps some sort of gadget that could be adapted to the strap, to take the weight off the defibrillator site. Any suggestions very much appreciated!