MINOR AXIS OSCILLATING ULTRASONIC PROBE

Title:

MINOR AXIS OSCILLATING ULTRASONIC PROBE

Document Type and Number:

WIPO Patent Application WO/2007/105453

Kind Code:

A1

Abstract:

A minor axis oscillating ultrasonic probe (U) which provides on a rotary holding table (1) a group of piezoelectric elements (2) arranged in a major axis direction and have an acoustic lens (6) on the ultrasonic wave transmitting/receiving surface, houses the rotary holding table (1) in an enclosed container (3) in the minor axis direction of the group of piezoelectric elements (2) so as to rotate and oscillate, scans mechanically in the minor axis direction ultrasonic waves transmitted/received to/from the ultrasonic wave transmitting/receiving surface of the group of piezoelectric elements (2), fill the enclosed container (3) with liquid (L) as an acoustic medium, and has a means of absorbing unnecessary ultrasonic waves propagating in a major axis direction between the ultrasonic wave transmitting/receiving surface and the inner peripheral surface of the enclosed container (3), wherein projections (6b) are respectively provided as the means of absorbing unnecessary ultrasonic waves on the opposite end sides of the acoustic lens (6) corresponding to the major axis direction. Accordingly, the minor axis oscillating ultrasonic probe can reduce working steps in the production of the probe, ensure the sealing of the enclosed container and the absorption of unnecessary ultrasonic waves, and reduce the weight of the probe to provide excellent operability at diagnosing.

Inventors:

HASEGAWA YASUNOBU (JP)

Application Number:

PCT/JP2007/053336

Publication Date:

September 20, 2007

Filing Date:

February 16, 2007

Export Citation:

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Assignee:

NIHON DEMPA KOGYO CO (JP)
HASEGAWA YASUNOBU (JP)

International Classes:

A61B8/00

Foreign References:

JPS56104651A	1981-08-20
JPH0255923U	1990-04-23
JPH09271097A	1997-10-14

Other References: