Abstract: In a coupling device for the connection of tubes for medical purposes, a first coupling-part (1) within which is mounted an axially adjustable hollow pin (2) provided with radial inlet openings (19) for the attachment of an initial tube piece, which pin (2) when in an operating position runs through an absorbent insert (9) impregnated with disinfectant and opens by way of its radial inlet openings (19) into a second coupling part (5) connected in detachable fashion to the first coupling part (1), while the second coupling part (5) exhibits at least an attachment point (7) and a vent (8), the second coupling part (5) exhibits a longitudinally adjustable sealing component (11) for a centrally positioned vent (8), while the hollow pin (2) exhibits an extension (29) serving the adjustment of the sealing component (11).

Abstract: A coupling for connecting hose lines for medical purposes including a first coupling member (1) having supported therein an axially shiftable hollow plug (2) with a tapered connector (16) for connecting thereto a first hose length and extending in its operating position through a sponge member (9) soaked with a disinfectant and capable of being pierced through a diaphragm (11) for coupling with a second coupling member (5), both coupling members (1, 5) being releasably connected together. Hollow plug (2) consists of outer and inner parts (3, 4) concentrically and telescopically arranged relative to each other so that both parts (3, 4) of the plug (2) are relatively axially and rotatably shiftable whereby a transverse flow passage (19) in outer part (3) is closed by inner part (4) or communicates with channel grooves (20) in the inner part to facilitate flow through the coupling.