a fill spout that is configured to rest substantially flush against the body of the drainage device when the fill spout is placed in the closed position.
Yet another object of the present invention is to provide a fill spout that does not require an external arrangement in order to supply a liquid water seal to the water seal chamber.
Another further object of the present invention is to provide a fill spout that prevents the water seal from running along the underside of the fill spout when the water seal is being supplied to the water seal chamber.
Yet another further object of the present invention is to provide a fill spout that is configured to facilitate the direct entry of a water seal into the water seal chamber ofis in fluid flow communication with a patient""s pleural cavity through a catheter having one end disposed inside the patient and the other end attached to a collection port of the collection chamber. The water seal chamber defines a compartment having one end in communication with the collection chamber and the other end in communication with a source of vacuum. A water seal, preferably water, is disposed along the bottom of the water seal chamber. The water seal acts as a one-way barrier that prevents the reflux of evacuated gases back into the collection chamber during a sudden high negative pressure condition in the collection chamber, for example, when a patient takes a quick and deep inhalation. According to one aspect of the present invention, the water seal