Controlled piezoelectric ceramic as cardiac pulse sensor

Using Pb1-xLax (ZR1-yTiy) 01-x/4O3 with x = 0.09 y = 0.65 (PLZT) denoted as (9/65/35) as base material and introducing a transverse platinum wire we developed a ceramic piezoelectric sensor whose main characteristic allows the ballistic measurement. The sensor dimensions are: diameter 1 cm, thickness 2 mm, and shows good characteristics as a sensor of cardiac pulse. Performing an assembly which allows us to get a signal from mechanical contact with the index finger and from the ear lobe. The signal obtained was compared to the ECG signal has important features for further analysis, the signal obtained was measured between the implant and the Pt side in pico amperes, obtaining good results. Finally, the heart pulse sensor can be placed in many living organisms and allows observation of small mechanical activity without contaminating the patient or biological sample.