Variable-frequency stacked annular self-gathering ultrasonic transducer

The invention relates to the technical field of ultrasonic tumor treatment systems, in particular to a variable-frequency stacked annular self-aggregation ultrasonic transducer which comprises a backing and a piezoelectric wafer, and the backing is of a double-layer structure; a hollow air cavity is...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHU TONG, CHEN JIAJUN, LAI NINGLEI, YAN ZHANGPING, YU SU'AN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTROTHERAPY FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL HUMAN NECESSITIES HYGIENE MAGNETOTHERAPY MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS RADIATION THERAPY TRANSPORTING ULTRASOUND THERAPY
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