I work on the video side of things and know nothing about the mech eng part. What I can tell you is that during the day there is definitely fecal matter in the scope one case to another during the day after after autoclave and sterilization. The first case of the day, the scope is clean. I don't know what's different about overnight processing in the sterile processing department. And I've seen this at many hospitals. There's been some startups that have tried sheaths to cover the scope but could not make it work.