The invention relates to a device for combining two components. A first container(1) accommodates the first component, which is liquid, and a second container(2) accommodates a second, solid or liquid component under negative pressure.A body (5) is provided with a first holder (6) for the first container (1), in theregion of the closure of the latter, and with a second holder (6) for the secondcontainer (2), in the region of the closure of the latter. Displaceable means(8, 22； 9, 23) for piercing the closures are provided within the body. In the caseof such a device, the invention provides that the body has two slides (8, 9) mountedin a displaceable manner in it, wherein each slide (8； 9) accommodates a cannula(22； 23) for piercing the respective closure, the cannulas are connected, inthe region of their ends (24) directed away from the closure, to an element (27)which connects the cannulas in a liquid-tight manner, and actuating means (16)are provided for moving the slides in the direction of the closures for the purposeof piercing the closures.
