Female coupling element for haemodialysis medical equipment

Claim 1

Female coupling element (1) for haemodialysis medical equipment, of the Luer-Lock type, comprising an outer tubular body (2) formed with a handgrip member (4) and an outerly threaded portion (5), and an inner sleeve (3) coaxially fitted within the outer body (2) and defining, in correspondence of the outerly threaded portion (5) thereof, a Luer cone (6) for connection to a male coupling element, said inner sleeve (3) being axially retained within the outer body (2) and being intended to be connected, on the side opposite to the Luer cone (6), to a tube, bag, or the like, wherein the outer body (2) and the inner sleeve (3) are made of two different moulded thermoplastic materials the first of which is relatively rigid and the second of which is relatively soft, characterized in that the outer body (2) and the inner sleeve (3) are freely rotatable relative to each other, the outer body (2) and the inner sleeve (3) are axially joined to each other by means of an inner annular projection (18) of the former in which an outer annular groove (19) of the latter is snap fitted.