The device (1) comprises: a first assembly (6) capable of cooperating with a handle subjected to control means for the actuation of the assembly for setting up and fixing an artificial rope (7) on the abutment (8) of a broken rope, said assembly is arranged at the end of a handling rod and comprises an elastic clip (9) pivotally and removably connected to the end of the rod so as to passing, under the action of the control means, a folded position along the rod to a position tilted angularly relative to the rod, to be placed perpendicularly to the pillar where the rope must be replaced, the first set ( 6) comprises means for opening the clip (9) for, under the action of the control means, anchoring the abutment (8) of the broken rope, the first set (6) comprises unlocking means allowing, under the action of the control means, to release the clip (9), the said clip afe (9) being connected to an artificial rope (7) which goes up in the stem； - A second assembly (13) adapted to cooperate with a handle subject to control means for actuating the assembly for the establishment and fixing of the artificial rope (7) to a leaflet (2a) of the valve (2), the second assembly (13) is arranged at the end of a handling rod and comprises fastening means (9, 16) for sliding along the artificial rope (7) and pivotally connected to the end of the rod so as to pass, under the action of the control means, a folded position along the rod at a position tilted orthogonally to the rod, the fastening means (9, 16) being suitable under the action of the control means, to fix the artificial rope (7) to said sheet (2a). Le dispositif (1) comprend : - un premier ensemble (6) apte à coopérer avec une poignée assujettie à des moyens de commande pour l'actionnement de l'ensemble pour la mise en place et la fixation d'un cordage artificiel (7) sur le pilier (8) d'un cordage rompu, ledit ensemble est agencé à l'extrémité d'une tige de manipulation et comprend une agrafe élastique (9
