| 摘要 |
<p>An ultrasonic observation apparatus to which an ultrasonic probe that is to be inserted into a body cavity is connected, the ultrasonic probe having a built-in ultrasonic vibrator. The housing of the ultrasonic observation apparatus is connected with the ground of a secondary circuit and is insulated in direct-current wise from the ground of a patient circuit. A timing generation circuit that generates a timing signal for creating a transmission signal is provided in the secondary circuit. The timing signal is transferred in an insulated manner from the secondary circuit to the patient circuit by an insulation circuit. The patient circuit has a transmission signal generation circuit for generating a transmission signal in synchronous with the timing signal inputted.</p> |
