An ultrasonic probe, even if the control switch through the multi oscillator amplifier and common delay circuit structure, increase power consumption, can inhibit the amplifier circuit scale, the deterioration of the receiving performance and suppress the stray capacitance switching part of the receiver, good quality. The ultrasonic probe includes a plurality of ultrasonic transducer, ultrasonic transmitting, receiving in vivo by ultrasonic echo reflection; switching part, signal of the ultrasonic vibrator by selectively switching from more than 2, the opening of mobile ultrasonic beam; and the Department, to amplify the signal from the switching section. The ultrasonic probe switches the switching section, thereby receiving signals from a plurality of ultrasonic vibrators at a time division. In addition, the ultrasonic probe also includes an impedance conversion section. The impedance conversion section is between the ultrasonic vibrator and the switching part, receives signals from the ultrasonic oscillator at high impedance, and outputs the output signal at low impedance to the switching part.
【技术实现步骤摘要】
【技术保护点】
１．一种超声波探头，包括：多个超声波振子，发送超声波，接收在被检体内被反射的超声波回波；切换部，通过选择性地切换来自２个以上的上述超声波振子的信号，进行超声波波束的开口移动；以及放大部，对来自上述切换部的信号进行放大；该超声波探头通过切换控制上述切换部，分时地接收来自多个超声波振子的信号，该超声波探头的特征在于，还包括阻抗变换部，该阻抗变换部介于上述超声波振子和上述切换部之间，以高阻抗接收来自上述超声波振子的信号，并以低阻抗输出给上述切换部。
【技术特征摘要】
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【专利技术属性】
技术研发人员：宫岛泰夫，
申请(专利权)人：株式会社东芝，东芝医疗系统株式会社，
类型：发明
国别省市：JP
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