Abstract: An applicator configured for cell treatment with pressure pulses has a hollow needle with a wall, which encloses a cavity and has a closed-off design at a closed-off end. A target is arranged or formed at the closed-off end on the inner side of the wall and a laser radiation emitter for emitting preferably pulsed laser radiation is arranged in the cavity of the hollow needle, at a distance from the target. The laser radiation emitter is arranged so that the emerging laser radiation impinges directly on the target through an interspace situated between the laser radiation emitter and the target. Under the formation of a plasma, at least one pressure pulse can be generated at the target by the target being impinged upon by laser radiation from the laser radiation emitter. The wall of the hollow needle has a lateral emergence opening for the emergence of the pressure pulse.

Abstract: An applicator configured for cell treatment with pressure pulses has a hollow needle with a wall, which encloses a cavity and has a closed-off design at a closed-off end. A target is arranged or formed at the closed-off end on the inner side of the wall and a laser radiation emitter for emitting preferably pulsed laser radiation is arranged in the cavity of the hollow needle, at a distance from the target. The laser radiation emitter is arranged so that the emerging laser radiation impinges directly on the target through an interspace situated between the laser radiation emitter and the target. Under the formation of a plasma, at least one pressure pulse can be generated at the target by the target being impinged upon by laser radiation from the laser radiation emitter. The wall of the hollow needle has a lateral emergence opening for the emergence of the pressure pulse.