A cleaning or care device for cleaning or care of at least one medical instrument, in particular a dental instrument having a cleaning chamber to receive the at least one instrument to be cleaned and having a media feed, through which a cleaning or care agent can be delivered into the cleaning chamber, wherein the cleaning chamber is bordered by a flexible outer shell, so that the volume of the cleaning chamber is variable. The duration of cleaning or care of the instrument is thus shortened, and the quantity of resources required for this, such as cleaning or care agent or energy, is reduced.
