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Title:
ULTRASONIC WAVE UNIT, DIFFRACTION SWELLING TAPE, AND ULTRASONIC WAVE FOCUSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/190834
Kind Code:
A1
Abstract:
The ultrasonic wave unit according to the present invention comprises a piezoelectric element having an ultrasonic wave generation surface for generating ultrasonic waves and a transmissive diffraction portion which is positioned on the ultrasonic wave generation surface or is positioned apart from the ultrasonic wave generation surface.

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Inventors:
TSURUOKA NORIKO (JP)
HAGA YOICHI (JP)
SEKI TAKASHI (JP)
Application Number:
PCT/JP2023/013107
Publication Date:
October 05, 2023
Filing Date:
March 30, 2023
Export Citation:
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Assignee:
UNIV TOHOKU (JP)
International Classes:
H04R1/34; A61B17/00; A61N7/00; H04R17/00
Domestic Patent References:
WO2018163971A12018-09-13
Foreign References:
JPS5596787A1980-07-23
US20200310002A12020-10-01
JPH10253604A1998-09-25
JP2016189891A2016-11-10
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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