An electrostimulation device comprises at least one shell (2) forming an inner compartment (21) and comprising an opening (22); at least one electrode (3) located at least partly outside the corresponding shell (2) at the opening (22). The device is characterised by the fact that the electrode (3) is connected to an articulated joint (4). The articulated joint (4) is at least partly inside the shell (2) and mobile in its seat (41). The electrode (3) can be angled and moved relative to the shell (2) as a result of the freedom of movement of the articulated joint (4) in its seat (41) depending on the anatomical form and structure of the treatment zone (8).