Elastic fixing device for closing the sternum after a sternotomy, process and instruments for applying such device

A fixing device is described, for closing a sternum (S) opened following a sternotomy incision (T) in the field of heart surgery or torax surgery, comprising a staple (10) made of an elastic plastic material, wherein the fixing device consists in a central segment or cortical riser (11) with a rhomboidal shape eguipped with a central opening that extends at its two opposite ends in two side segments or roots (12). A process and instruments for applying such fixing device are also described.