Disclosed is a coupling device (1) intended to connect first and second elements which are articulated with respect to one another, wherein the device includes a compression element (2) designed to allow a compressive force to pass from one element to another in a first state, and a tension element (3) designed to allow a tensile force to pass from one element to another in a second state, the compression element additionally forming a substitution tension element designed to allow a tensile force to pass from one element to another in a third state corresponding to the fracturing of the tension element.