Vibratory instrument with interchangeable tool

vibrating instrument (200) comprising a tool (220) removably mounted on a tool holder (210), said tool holder adapted to be coupled mechanically rigidly to a vibration generator (20) device, said tool comprising on, as a longitudinal axis, a working portion (221) having a free end adapted to reproduce vibrations by the elastically deformable generating device vibration (20), a coupling portion (223) and a connecting portion (222) transmitted prepared upstream of the coupling portion (223), said tool (210) successively along a longitudinal axis, a housing (214) receiving the joining portion (222) of said tool and a coupling bearing (215) surrounding at least partially the engagement portion (223) of the tool (220), wherein the connecting portion (222) of the tool (220) outer dimensions adapted with respect to the inner dimensions of the housing (214) of the tool (210) so that a contact between said attachment portion and said housing is prevented when the coupling portion (223) of the tool ( 220) is in contact with the coupling bearing (215) of the toolholder (210).