Ultrasonic probe

Details Ultrasonic probe Ultrasonic probe

1990-03-29

1992-05-26

Kamm, William E.

Surgery

Truss

Pad

A61B 814

Patent

active

051158094

ABSTRACT:
An ultrasonic probe includes a probe head having a piezoelectric element which includes a plurality of piezoelectric layers which are laminated in the thickness direction thereof with the polarity directions of the adjacent piezoelectric layers set opposite to each other and each of which has opposite end surfaces, electrodes formed on the opposite end surfaces of the piezoelectric layers in the laminated direction, a plurality of external electrodes formed on the opposite end surfaces of the piezoelectric layers on the laminated direction, internal electrodes formed in the lamination interface of the piezoelectric layers, an acoustic matching layer having a plurality of layers and formed on one surface of the plurality of laminated piezoelectric layers, an acoustic lens disposed on the matching layer with the convex surface thereof set towards the outside, and a backing material disposed on the other surface of the piezoelectric element.

REFERENCES:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 36, No. 6, Nov. 1989; "Apodization of Multilayer Bulk Wave Transducers", E. Akcakaya et al; 1989.

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