Ultrasonic probe with back and forth sweeping ultrasonic source

摘要

An ultrasonic probe for imaging tissues from inside a patient's body cavity is disclosed. The ultrasonic probe includes an end portion having a back and forth pivotable transducer assembly for transmitting an ultrasonic beam. The transducer assembly is supported by a silicon-containing support about a cavity and includes a transducer block on a base layer connected to the support via one or more twistable or flexible support arms. The transducer block includes a backing layer, a transducer layer on said backing layer, and an acoustic matching layer on the transducer layer. A bottom electrode in the transducer block penetrates the backing layer to connect electrically to a bottom face of the transducer layer to a conductor which is on a first face of the block. A top electrode penetrates the acoustic matching layer to connect electrically to a top face of the transducer layer to a conductor on a second face of the block for activating the transducer layer. The end portion also has an electromagnetic driver located near to the transducer assembly for acting on ferromagnetic material on the transducer assembly to result in pivotal motion of the transducer on the support arms.