Device to support an article with an oblong and flexible configuration, to be subjected to a washing, sterilization and/or heat disinfection treatment, comprising a frame (11) defining a support plane (12) configured to receive and support one article (13) to be treated. The support device comprises a plurality of holding and positioning elements (21) associated with the frame (11) and that define a plurality of housing seatings (22) disposed aligned along a positioning path (P) and each configured to receive and hold a portion of the article (13) in a predefined position.
