APODIZING BACKING STRUCTURES FOR ULTRASONIC TRANSDUCERS AND RELATED METHODS

There is provided an apodizing wedge structure for a LIPUS treatment head. The LIPUS treatment head includes a low-volume fraction piezoelectric composite disc. The apodizing wedge structure includes an annular body for contacting a surface of the piezoelectric disc, the annular body including an in...

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Bibliographische Detailangaben
Hauptverfasser:	RIEDER, Eric, CHAGGARES, Nicholas Chris, KARSHAFIAN, Khachic Chris
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR 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 METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS RADIATION THERAPY SOUND-PRODUCING DEVICES TRANSPORTING ULTRASOUND THERAPY
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Beschreibung
Zusammenfassung:	There is provided an apodizing wedge structure for a LIPUS treatment head. The LIPUS treatment head includes a low-volume fraction piezoelectric composite disc. The apodizing wedge structure includes an annular body for contacting a surface of the piezoelectric disc, the annular body including an inner perimeter having an inner thickness and an outer perimeter having an outer thickness. The annular body includes an inclined surface forming a continuous slope extending from the inner perimeter to the outer perimeter, the inner thickness being smaller than the outer thickness. The apodizing wedge is configured to change an apparent thickness of the piezoelectric disc with respect to resonant properties of the piezoelectric disc when the apodizing wedge structure is in acoustic communication with the piezoelectric disc, thereby allowing the LIPUS treatment head to generate a uniform near field. LIPUS treatment heads and ultrasonic transducers including such an apodizing wedge structure are also provided.