A device for exchanging and/or docking functional modules (1, 2), and used
for the extracorporeal circulation of bodily fluids, is provided. Each
functional module (1, 2) includes at least one conduit (3; 4) comprising
an inlet (5; 7) and an outlet (6; 8). The aim of the invention is to
exchange the functional modules of an extracorporeal circuit as rapidly
as possible, without detaching tubular connections and without having to
establish a new connection. The invention is provided with elements (9,
10; 11, 12) for connecting the conduit (3) of a first functional module
(1) to the inlet (5) and the outlet (6) of a second functional module
(2). The connection is established in such a way that the first
functional module (1) is bypassed by means of the second functional
module (2) to maintain the flow and the bodily fluid is diverted through
the second functional module (2).