| 摘要 |
PURPOSE:To provide an ultrasonic diagnosing device which hardly gives an influence to noise. CONSTITUTION:An ultrasonic diagnosing device is equipped with the core wire of a double shield wire 14 for connecting an amplifier 18 and a vibrator element 11 for transmitting and receiving ultrasonic waves, shield inside layer and outside layer of the double shield wire 14 which covers the core wire and is connected with the ground of the amplifier 18, flexible shaft 12, blade 13, coaxial cable 21 for transmitting the output signal of the amplifier 18 to an ultrasonic wave observation device 7 side, and a blade 20 which is connected with the ground of the amplifier 18 and covers the coaxial cable 21. On the outer periphery on the drive sides of the blades 13 and 20, ferrite cores 15 and 19 are installed, respectively, and if the center frequency of the received wave is represented by f0, a filter 22 having the band path characteristic of 2/3Xf0-4/3Xf0 is installed on a pulse unit 5. |
