Patent ID: 9089873
Filing Date: 2015-07-28
Classification: A61B,B06B

Abstract:
1. An ultrasonic diagnostic apparatus comprising: an ultrasonic probe configured to transmit/receive ultrasonic waves with a plurality of transducers to/from an object to be examined; a transmission unit configured to provide a drive signal to the plurality of transducers; a bias unit configured to supply a bias voltage to the plurality of transducers; a reception unit configured to convert the received ultrasonic waves from the object into received reflected echo signals; a computer having at least one processor pre-configured to operate as: an operation unit including input hardware, configured to receive commands to the computer, via input by an operator, wherein the ultrasonic probe is a capacitive micromachined ultrasonic transducer (cMUT) chip, the cMUT chip including: a plurality of upper electrodes, a plurality of lower electrodes, and a wiring arrangement connected to supply the bias voltage from the bias unit to the plurality of upper electrodes and the plurality of lower electrodes, and the wiring arrangement is connected at two or more places of at least one upper electrode of the plurality of upper electrodes and at two or more places of at least one lower electrode of the plurality of lower electrodes, so as to apply the bias voltage to reduce cross talk by reducing parasitic impedance generated by the plurality of upper electrodes or the plurality of lower electrodes.