An ultrasonic probe includes ultrasonic oscillators each having first and second electrodes, a first transmitting circuit that is connected to the first electrode to transmit an electrical signal to the ultrasonic oscillator, and a second transmitting circuit that is connected to the second electrode...http://www.google.de/patents/US8030822?utm_source=gb-gplus-sharePatent US8030822 - Ultrasonic probe and ultrasonic diagnostic apparatus
