Title:
超音波振動子及び超音波医療装置
Document Type and Number:
Japanese Patent JP6529576
Kind Code:
B2
Abstract:
An ultrasonic transducer includes: two metal blocks; a plurality of piezoelectric elements having rectangular surfaces and stacked between the metal blocks; and bonding materials bonding the metal block and the piezoelectric element and the piezoelectric elements to each other. Thermal expansion coefficients in the diagonal directions from the center of the surface of the piezoelectric element to the four corners thereof are equal to each other.
Inventors:
Hiroshi Ito
Application Number:
JP2017505765A
Publication Date:
June 12, 2019
Filing Date:
March 13, 2015
Export Citation:
Assignee:
Olympus Endo Technology America Inc.
International Classes:
H04R17/00; A61B17/32
Domestic Patent References:
| JP2014030795A | ||||
| JP2015043879A |
Foreign References:
| WO2011004669A1 |
Attorney, Agent or Firm:
Takashi Koyama
Teiji Tanaka
Teiji Tanaka