| (19) |
 |
|
(11) |
EP 0 455 273 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
29.04.1992 Bulletin 1992/18 |
| (43) |
Date of publication A2: |
|
06.11.1991 Bulletin 1991/45 |
| (22) |
Date of filing: 30.08.1985 |
|
| (51) |
International Patent Classification (IPC)5: G10K 11/00 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
30.08.1984 JP 181316/84
30.08.1984 JP 181317/84
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
85306166.1 / 0174167 |
| (71) |
Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
|
Kadoma-shi,
Osaka-fu 571 (JP) |
|
| (72) |
Inventors: |
|
- Kawachui, Masami
Yokohama-shi,
Kanagawa 226 (JP)
- Muramatsu, Fumio
Atsugi,
Kanagawa 243 (JP)
|
| (74) |
Representative: Crawford, Andrew Birkby et al |
|
A.A. THORNTON & CO.
Northumberland House
303-306 High Holborn
London WC1V 7LE
London WC1V 7LE (GB) |
|
| |
|
|
|
Remarks: |
|
This application was filed on 16 - 07 - 1991 as a divisional application to the application
mentioned under INID code 60. |
|
| (54) |
Ultrasonic transducers for medical diagnostic examinations |
(57) An ultrasonic probe for mechanical scan-type is disclosed which comprises one or
a plurality of ultrasonic transducers (20) mounted on a supporting member (14). One
or more of the transducers (20) are divided electrically or mechanically. The supporting
member (14) is located in a container (2) with ultrasonic wave propagating medium
(3). The supporting member (14) rotates or swing in the container (2) and ultrasonic
beam emanated therefrom scans object in sector form. The divided transducers (20)
are selectively driven in commonly or separately in accordance with display mode.
Another embodiment which includes a plurality of ultrasonic transducers (20) each
having different focal length is also disclosed.