A device for collecting liquid and, in particular, a device for collecting liquid or liquid-like substances used and/or generated in the course of medical procedures, the device including a bag-like product that is removable attachable to the site being treated, such as the ear or the nose, and including at least one opening for transporting the flushing liquid or other liquid-like substance from the site being treated into the bag. In accordance with the invention, the bag includes a collection section to be placed at the site being treated and a connecting support section that extends at least over the patients one shoulder, the bag being designed to be supported on at least one shoulder when being used.