This paper presents the development of a reinforced polymeric compound with phosphorus (P), aluminum (Al) and potassium (K) doped carbon nanotubes to be applied on signal record. The composites were obtained by sonication in bath and lance technique. Finally, characterization was made by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and RAMAN. It was made a pilot test that should be expanded to obtain the validation of the technique as a biosignal recorder method, which would contribute to management of pathologies affecting the heart.