Abstract: Tool holder, in particular a milling cutter holder, which comprises a main body with a substantially oblong cylindrical shape defining a channel in which a transmission passes designed to transmit to the tool, in particular the milling cutter, a movement from the axis of a drive motor, and a gripping element for gripping the tool holder, characterized in that an intermediate part is provided arranged between the transmission and the axis of the drive motor, the intermediate part comprising means for enabling the rotatable connection of said intermediate part to the transmission and the axis of the motor, the intermediate part comprising means forming an abutment designed to lock in translation in the longitudinal direction of displacement of the axis of transmission by abutment in particular against the gripping element.

Abstract: A device for a cup to be received in the cotyl of a hip. The device includes an insert, a gripping means for gripping the insert, a rod for imparting shock, and an impaction head having a surface in contact with a portion of the insert. The rod for imparting shock is designed to be held by a surgeon and is used for the application of an impaction shock to the insert when held by the gripping means opposite the cup to be introduced into the cotyl of a hip. The impaction head having a surface in contact with a portion of said insert and the rod are connected to one another so as form a head and rod assembly joined in rotation. The head and rod assembly is mounted pivotably at a pivot point in relation to the gripping means.

Abstract: Device for inserting an insert (1), made in particular of ceramic material, into a cup designed to be received in the cotyl of a hip, characterised in that it comprises: means (17, 20, 21, 22) for gripping the insert, in particular an upper free edge of the insert; a rod (5,6) designed to impinge on the insert when it is held by the gripping means opposite the hollow part of the cup; and means (32, 33, 34) for imparting a downwards shock to the rod to push the insert into the cup, i.e. introduce it by force to the inside of the cup, said shock imparting means imparting a shock to the rod with a predetermined force.

Abstract: An impaction device (1) intended to impart a blow to a stem, the stem itself being coupled to an element forming an insert intended to be inserted into a receiving element, in particular a ceramic insert in a cup of a cotyloid cavity of a hip; the impaction device (1) including an element (4) forming a barrel defining a channel (5) or an internal chamber that has an opening via which at least part of the stem, in particular a proximal end segment of the stem, can be inserted; means of applying a blow intended to apply to the part of the stem introduced into the chamber a pre-determined blow force; and means (12, 14) for triggering the blow application means.