EP 0308644 A3 19900530 - FOCUSING ULTRASONIC TRANSDUCER
Title (en)
FOCUSING ULTRASONIC TRANSDUCER
Publication
Application
Priority
DE 3732131 A 19870924
Abstract (en)
[origin: US4888746A] A focussing transducer for the destruction of objects internal to a patient's body by pulses of ultrasonic waves. The transducer comprises a concave transducer surface which is divided into areas and there is a control means which can selectively activate the areas of the transducer so that the waveform arriving at the focus can adjusted.
IPC 1-7
IPC 8 full level
B06B 1/06 (2006.01); G10K 11/32 (2006.01)
CPC (source: EP US)
B06B 1/0625 (2013.01 - EP US); G10K 11/32 (2013.01 - EP US)
Citation (search report)
- [E] EP 0307300 A1 19890315 - TECHNOMED INT SA [FR], et al
- [E] EP 0289382 A1 19881102 - EDAP INT [FR]
- [AD] DE 3119295 A1 19821216 - SIEMENS AG [DE]
- [A] FR 2369768 A1 19780526 - STANFORD RESEARCH INST [US]
- [A] FR 2567394 A1 19860117 - WOLF GMBH RICHARD [DE]
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0308644 A2 19890329; EP 0308644 A3 19900530; EP 0308644 B1 19941026; DE 3732131 A1 19890406; DE 3851930 D1 19941201; US 4888746 A 19891219
DOCDB simple family (application)
EP 88113188 A 19880813; DE 3732131 A 19870924; DE 3851930 T 19880813; US 24471488 A 19880914