An ancillary for placing a cup for a cotyloid implant of a hip total prosthesis, of the type including: - a manipulating handle comprising, on the one hand, a distal portion designed for a manual grasping and having an impaction surface and, on the other hand, a curved proximal portion ending with a gripping head; - a gripping member adapted to cooperate with the gripping head for the gripping of the cup; and - an actuating system comprising a movable grip pivotally mounted according to a pivot axis on the handle and a mechanical transmission device connecting said grip to said gripping member, said mechanical transmission device comprising a curved connecting rod guided in displacement by the proximal portion of the handle and passing through the gripping head to cooperate with said gripping member; wherein, to displace the gripping member, the grip is actuatable between: - a deployed position so that the gripping member is moved away from the gripping head to allow an unlocking of the cup on the gripping member; and - a folded position so that the gripping member cooperates with the gripping head to allow a locking of the cup on the gripping member; in which the grip is pivotally and removably mounted on the handle and the gripping member is removably fastened on the curved connecting rod, in order to allow the dismantling of the grip and the actuating system out of the handle, wherein the handle has a lower border and an upper border, and the grip is articulated on an indented portion of said lower border, said indented portion being delimited by two walls facing each other, where the two walls have notches opposite to each other, and the grip has, at a first end articulated on the handle, two protruding lugs received in the respective notches, so that, on the one hand, said lugs can pivot within said notches and, on the other hand, said lugs can be removed out of said notches when dismantling the grip and the actuating system out of the handle; said ancillary being characterized in that each lug has a cylindrical peripheral wall truncated on two opposite sides to define two opposite flat faces and two opposite arcuate faces, and each notch is delimited by an inner peripheral wall which has an arcuate bottom and two opposite flat faces forming a inlet narrowed within the notch, where the lug is introduced into the corresponding notch by aligning the flat faces of the lug with the flat faces of the notch to guide the insertion of the lug, then the lug is capable of pivoting in the notch by at least one partial contact between the arcuate faces of the lug and the arcuate bottom of the notch, the narrowed inlet preventing an outlet of the lug out of the notch. - a manipulating handle comprising, on the one hand, a distal portion designed for a manual grasping and having an impaction surface and, on the other hand, a curved proximal portion ending with a gripping head; - a gripping member adapted to cooperate with the gripping head for the gripping of the cup; and - an actuating system comprising a movable grip pivotally mounted according to a pivot axis on the handle and a mechanical transmission device connecting said grip to said gripping member, said mechanical transmission device comprising a curved connecting rod guided in displacement by the proximal portion of the handle and passing through the gripping head to cooperate with said gripping member; - a deployed position so that the gripping member is moved away from the gripping head to allow an unlocking of the cup on the gripping member; and - a folded position so that the gripping member cooperates with the gripping head to allow a locking of the cup on the gripping member; in which the grip is pivotally and removably mounted on the handle and the gripping member is removably fastened on the curved connecting rod, in order to allow the dismantling of the grip and the actuating system out of the handle, wherein the handle has a lower border and an upper border, and the grip is articulated on an indented portion of said lower border, said indented portion being delimited by two walls facing each other, where the two walls have notches opposite to each other, and the grip has, at a first end articulated on the handle, two protruding lugs received in the respective notches, so that, on the one hand, said lugs can pivot within said notches and, on the other hand, said lugs can be removed out of said notches when dismantling the grip and the actuating system out of the handle; said ancillary being characterized in that each lug has a cylindrical peripheral wall truncated on two opposite sides to define two opposite flat faces and two opposite arcuate faces, and each notch is delimited by an inner peripheral wall which has an arcuate bottom and two opposite flat faces forming a inlet narrowed within the notch, where the lug is introduced into the corresponding notch by aligning the flat faces of the lug with the flat faces of the notch to guide the insertion of the lug, then the lug is capable of pivoting in the notch by at least one partial contact between the arcuate faces of the lug and the arcuate bottom of the notch, the narrowed inlet preventing an outlet of the lug out of the notch.