Ultrasonic medical apparatus
US5402792A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00547
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic medical apparatus, particularly convenient for use inside a body cavity, includes an applicator having an ultrasonic transducer, which may be attached to an acoustic lens such that the emitted ultrasonic waves are focused at two or more different positions. For this purpose, the wave-emitting surface of the transducer, or the acoustic lens attached to it, is partitioned into concave surface elements which may be in a concentric annular arrangement and may each have a different radius of curvature and a different center of concavity. An apparatus thus structured can be made compact and hence is convenient for use inside a body cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.