Many researches of the gene using the gene alteration mice have been performed. However, 600,000 kinds of mice are produced for the elucidation of gene function. For this reason, the microchip for individual discernment for discriminating and managing huge kind of mouse must be developed. In this research, the detailed structure and functions of the micro pressure sensor were investigated by the FEM analysis. About 144 kinds of sensors are made in consideration of an analytical result. A basic character of the pressure sensor to measure the ventricular rate with this device was clarified. Two kinds of micro pressure sensors the number of cardiac beats were actually mounted, and were measured. As a result of conducting evaluated experiments clear periodic signals was observed, and there were confirmed as cardiac also in beats by the power spectrum analysis.
