Patent ID: 7455648

Claim:
A living body inspection apparatus comprising: an AC generation circuit which generates an AC voltage having a predetermined frequency; converting means for converting said AC voltage output from said AC generation circuit to an AC current; an oscillation coil which passes said AC current output from said converting means; a detection coil which detects an AC magnetic field generated from said oscillation coil; an amplification circuit which amplifies a voltage generated by the magnetic field induced by said detection coil; detecting means for detecting the output signal of said amplification circuit with the same frequency as that of said AC generation circuit or a double harmonic frequency; a low pass filter to which the output signal of said detecting means is input; means for setting said oscillation coil in a first region of the living body; means for setting said detection coil in a second region of said living body; recording means for recording the output of said low pass filter while said first region and said second region of said living body are moving; and displaying means for displaying the data recorded in said recording means or results of an analysis of said recorded data, wherein said output of said low pass filter contains the continuous information related to the distance between the first region and the second region of the living body; calculating means for converting a voltage value of said data recorded in said recording means to a distance corresponding to the distance between said first region and said second region; primary differentiating means for primary differentiating the waveform of the voltage value of said data recorded in said recording means or the waveform obtained by said calculating means; secondary differentiating means for secondary differentiating the waveform of the voltage value of said data recorded in said recording means or the waveform obtained by said calculating means; and said display means further configured for displaying results obtained in said primary and secondary differentiating means as information of velocity and acceleration on said display means.