Thank you so much for your information...I am Carole...the other person was Maintaince Man and he/she never did answer my question about what a Supra was....My mother in law recently had the Interstim device implanted and that is a long story in itself...we are not sure that it is working as "right" as it should and there is a chance she is going to have to be cathed or return to a foley, so your answer is very helpful! Thanks so much again! If I have other questions may I contact you since your an experienced person with this issue?