Abstract: The present invention relates to a container (1, 10) for holding a liquid, in particular an infusion or irrigation liquid, said container having a liquid phase (6) containing the liquid and a gas phase (4), in which in the operating position a liquid opening is formed in the lower region of the container (1, 10) and the container has a gas opening. The gas opening is formed by a gas pipe (3) permanently connected to the container (1, 10) and having a first gas pipe end (12) and a second gas pipe end (13). The first gas line end (12) extends into the gas phase (4) of the vessel (1, 10) and is provided with a fastener. The second gas pipe end (13) opens to the outside of the vessel (1, 10).

Abstract: Provided by this disclosure is a method and system for the preparation of a blood clot-based wound dressing whereby a fluid, typically gas such as air is propelled through one conduit into a sealed, blood-containing test tube, and at the same time blood s permitted to flow out of the test through a second conduit and thereby transferred into a blot clot molding space where the blood is permitted to coagulate forming a clot of a shape defined by the molding space. The propelling fluid is typically air that is propelled to flow in the first conduit by a syringe. Provide by this disclosure is also a coupling device useful in said method and system; as well as a kit of parts comprising elements needed for carrying out the method of this disclosure.