A device to support an article with an oblong and flexible configuration, to be subjected to a washing, sterilization and/or heat disinfection treatment, including a frame defining a support plane configured to receive and support one article to be treated. The support device includes a plurality of holding and positioning elements associated with the frame and that define a plurality of housing seatings disposed aligned along a positioning path and each configured to receive and hold a portion of the article in a predefined position.
