Title:
HIGH POWER ULTRASOUND TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2001/003773
Kind Code:
A1
Abstract:
The invention provides a high power ultrasound transmitter having a concave inner surface. There are plurality of electroacoustic transducers on the inner surface. The electroacoustic transducers are connected each other in series or in parallel and located on a same spherical surface. The normal of emitting surface of the electroacoustic transducer is perpendicular to the spherical surface. The calibre of the concave is bigger than or equal to 290 mm; the amount of the electroacoustic transducers is bigger than or equal to 201; the diameter of the electroacoustic transducer is less than or equal to 19 mm; the radius of the spherical surface is less than the calibre of the concave. Using this ultrasound transmitter, the temperature at focal spot within human body can reach 70 $m(k) 100 °C, while the skin is not seared.
Inventors:
HE SHENXU (CN)
WU XIAODONG (CN)
WU XIAODONG (CN)
Application Number:
PCT/CN1999/000090
Publication Date:
January 18, 2001
Filing Date:
July 13, 1999
Export Citation:
Assignee:
HE SHENXU (CN)
WU XIAODONG (CN)
WU XIAODONG (CN)
International Classes:
A61N7/02; A61B17/22; (IPC1-7): A61N7/02
Foreign References:
| CN1212897A | 1999-04-07 | |||
| CN1212896A | 1999-04-07 | |||
| CN1190027A | 1998-08-12 | |||
| US5665054A | 1997-09-09 | |||
| JPH10195718A | 1998-07-28 |
Attorney, Agent or Firm:
BEIJING SANYOU PATENT AGENCY CO., LTD. (Beijing 8, CN)
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