A device for the discrimination of biological tissues comprising: - a first laser emitter configured for emitting in an axial direction X-X' a laser beam capable of causing a plasma plume when striking biological tissue; - a spectrum reading unit configured for measuring a spectrum of a laser-generated plasma plume beam; - a central processing unit in communication with the spectrum reading unit configured for receiving a measured spectrum and for providing an output with a discrimination value in response to the measured spectrum; - a blowing unit configured for providing a gas flow, either by means of blowing or by means of suction or by means of blowing and suction, in a region which, in an operating mode, contains the zone of tissue which a laser beam generating the plasma plume strikes; characterized in that the blowing unit is configured for adapting the flow such to leave the tissue free of any fluids, debris, and other elements not related to the tissue; and wherein the central processing unit is configured for continuously executing the following instructions: i. receiving the measured spectrum from the spectrum reading unit; ii. comparing the measured spectrum with a plurality of previously stored spectra (E 1, E 2, E 3,..., E m) corresponding to the light emitted in the plasma generated by the first laser emitter in a plurality of different biological tissues (T 1, T 2, T 3,..., T n), identifying the stored spectrum with the highest degree of similarity to the spectrum that is received, and determining the biological tissue (T i), i = 1..n; iii. providing as a discrimination value the identification of the biological tissue ( T i) of the stored spectrum having the highest degree of similarity with the measured spectrum. - a first laser emitter configured for emitting in an axial direction X-X' a laser beam capable of causing a plasma plume when striking biological tissue; - a spectrum reading unit configured for measuring a spectrum of a laser-generated plasma plume beam; - a central processing unit in communication with the spectrum reading unit configured for receiving a measured spectrum and for providing an output with a discrimination value in response to the measured spectrum; - a blowing unit configured for providing a gas flow, either by means of blowing or by means of suction or by means of blowing and suction, in a region which, in an operating mode, contains the zone of tissue which a laser beam generating the plasma plume strikes; characterized in that the blowing unit is configured for adapting the flow such to leave the tissue free of any fluids, debris, and other elements not related to the tissue; and wherein the central processing unit is configured for continuously executing the following instructions: i. receiving the measured spectrum from the spectrum reading unit; ii. comparing the measured spectrum with a plurality of previously stored spectra (E 1, E 2, E 3,..., E m) corresponding to the light emitted in the plasma generated by the first laser emitter in a plurality of different biological tissues (T 1, T 2, T 3,..., T n), identifying the stored spectrum with the highest degree of similarity to the spectrum that is received, and determining the biological tissue (T i), i = 1..n; iii. providing as a discrimination value the identification of the biological tissue ( T i) of the stored spectrum having the highest degree of similarity with the measured spectrum. i. receiving the measured spectrum from the spectrum reading unit; ii. comparing the measured spectrum with a plurality of previously stored spectra (E 1, E 2, E 3,..., E m) corresponding to the light emitted in the plasma generated by the first laser emitter in a plurality of different biological tissues (T 1, T 2, T 3,..., T n), identifying the stored spectrum with the highest degree of similarity to the spectrum that is received, and determining the biological tissue (T i), i = 1..n; iii. providing as a discrimination value the identification of the biological tissue ( T i) of the stored spectrum having the highest degree of similarity with the measured spectrum.