Isn't that strange?
(Supra)national regulations mandate that User Manuals need to be specific about how it can be determine if a rigid endoscope is still fit to be cleaned for another re-use cycle, rather than provide non-specific disclaimers, notes and warnings that may be subject to a degree of interpretation.
OEMs should comply with ISO 17664-1. As far as we know, no endoscope manufacturer has ever specified clear re-use related quality failure parameters. However, hospitals need appropriate procedures and criteria to be able to determine if re-usable devices are still ok after every re-use. Otherwise there is no certainty that the device may be used on the next patient.