Mechanical wave inducing device being connectable to a needle

A mechanical wave inducing device being connectable to a medical needle, the device having a displacement source and an arrangement for a driving signal, at least two wing parts, which are in connection with the displacement source,

• and which each wing part is arranged to be attachable with the needle, and
• which each wing part comprises a connection portion, through which the wing part is in connection with the displacement source, the connection portion being common to the wing parts,
• said each wing part with the connection portion being a converter in order to convert longitudinal mechanical wave movement created by the displacement source into transversal mechanical wave movement for the needle, two of the wing parts being directed to opposite directions with respect to the connection portion;
• wherein each wing part has a respective stripe-like connection area and each wing part is arranged to be attachable with a different part of the needle's length via its respective stripe-like connection area.