| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a medical ultrasonic transducer capable of being attached and applied along a curved surface in a complicated shape of a head part surface and irradiating a patient with ultrasonic vibrations over a wide frequency range. <P>SOLUTION: The medical ultrasonic transducer 10 is configured by arranging, at an interval L, a first transducer 20 (transducer system A) having a positive electrode 11a formed on the first surface of a PVDF film laminated body 11 and a negative electrode 11b formed on the second surface and a second transducer 30 (transducer system B) having a positive electrode 21a formed on the first surface of a PVDF film laminated body 21 and a negative electrode 21b formed on a second surface, and enclosing viscous liquid 41 such as liposome including fine bubbles 41a of PFe between the opposing surfaces of the first and second transducers. A patient can be irradiated with a plurality of ultrasonic waves δ over a wide frequency range in which ultrasonic waves γ generated by the collapse of the fine bubbles 41 by the drive of the transducer system A and/or the transducer system B, the ultrasonic waves α of the transducer system A and the ultrasonic waves β of the transducer system B are combined. <P>COPYRIGHT: (C)2012,JPO&INPIT |
