EP 0373603 A3 19911113 - ULTRASONIC PROBE
Title (en)
ULTRASONIC PROBE
Publication
Application
Priority
JP 31542288 A 19881214
Abstract (en)
[origin: EP0373603A2] An ultrasonic probe (1) includes a plurality of piezoelectric elements (2A-2F) extending concentrically. The elements have respective surfaces via which ultrasonic wave is transmitted and received. The surfaces of the elements (2A-2F) are concave and have predetermined radii of curvature (ra-rf) respectively. The radii of curvature increase as the elements are farther from an innermost place and closer to an outermost place.
IPC 1-7
IPC 8 full level
G01N 29/24 (2006.01); A61B 8/00 (2006.01); B06B 1/06 (2006.01); G10K 11/32 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP)
B06B 1/0622 (2013.01); G10K 11/32 (2013.01)
Citation (search report)
- [X] US 4276779 A 19810707 - DAVIS JR LUTHER
- [X] EP 0102179 A1 19840307 - TECHNICARE CORP [US]
- [X] US 4760304 A 19880726 - OLIVER DAVID W [US]
- [A] FR 2324004 B1 19820108 - COMMW OF AUSTRALIA [AU]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0373603 A2 19900620; EP 0373603 A3 19911113; EP 0373603 B1 19950308; DE 68921571 D1 19950413; DE 68921571 T2 19950803; JP H02159266 A 19900619
DOCDB simple family (application)
EP 89122956 A 19891212; DE 68921571 T 19891212; JP 31542288 A 19881214