I had a sensor that came unstuck for reasons known only to itself and phoned Abbott. It still had a a further 9 days to run so they agreed to replace it as it wasn't giving me the full 14 days as promised. You say 'sensor just ripped out', do you mean it got knocked off or caught in clothing, because that was one of the questions they asked me ? Obviously, I can't speak for Abbott, but they may not replace it in that situation. Mine just peeled off for no reason and there was no argument. I don't think the number of days left on the sensor is the deciding factor, I think the way it became detached from you will probably determine whether a replacement is in order. Hope this helps.